Planning Law Solicitors

Planning Law Solicitors

Planning law governs how land and buildings may be developed, altered and used. It affects homeowners, developers, businesses, landowners, local authorities, community groups and anyone affected by a proposed development or alleged breach of planning control.

Planning law solicitors can advise on planning applications, objections, development projects, enforcement action, appeals, judicial review, compulsory purchase and environmental issues throughout England and Wales.

The planning systems in England and Wales share much of the same underlying legislation. Still, national policy, permitted development rights, appeal procedures and some enforcement powers differ. Advice should therefore be based on the location of the land and the rules operating when the issue arises.

When Is Planning Permission Required?

Planning permission is generally required for development unless the work or change of use is permitted by legislation.

Development can include:

• constructing a new building;
• extending or materially altering an existing building;
• engineering, mining or other operations;
• making a material change in the use of land or buildings;
• dividing a property into separate units;
• changing a home into business premises;
• using land for storage, parking or commercial activity; and
• some temporary or intensified uses of land.

Not every physical alteration or change in activity amounts to development. Even where development has occurred, planning permission may already have been granted under permitted development rights.

Planning permission is separate from building regulations approval, listed building consent, environmental permits, licensing, restrictive covenants and the rights of neighbouring landowners. A project may require several different permissions before it can proceed lawfully.

Planning Applications

Preparing an Application

A planning solicitor can work with planning consultants, architects, surveyors, environmental specialists and other professionals to prepare and submit an application.

Depending on the development, an application may need:

• application forms and ownership certificates;
• site location and block plans;
• existing and proposed drawings;
• a design and access statement;
• a planning statement;
• heritage, transport or drainage assessments;
• ecological and biodiversity information;
• flood-risk information;
• noise, air-quality or contamination reports;
• an environmental impact assessment;
• details of affordable housing or infrastructure contributions; and
• the appropriate application fee.

A solicitor can advise on the legal issues, review the planning history and identify whether restrictive agreements, previous permissions or enforcement matters may affect the application.

Outline and Full Planning Permission

An outline application can establish whether the principle of development is acceptable before all design details are settled. Matters reserved for later approval may include access, appearance, landscaping, layout and scale.

A full application seeks approval for the complete proposal. The appropriate route will depend on the type of development, the information available and the applicant's commercial objectives.

Pre-Application Advice

Local planning authorities commonly offer pre-application advice. This may help identify policy concerns, information requirements and possible amendments before a formal application is submitted.

Pre-application advice is not a guarantee that permission will be granted. The authority must consider the formal application, consultation responses and planning circumstances existing at the time of the decision.

Validation Disputes

A planning authority may decline to validate an application where required information has not been supplied. Disputes can arise over whether a particular report, survey or document is reasonably required.

There are procedures for challenging some non-validation decisions. The applicable route and deadline differ between England and Wales, so advice should be obtained promptly.

How Planning Applications Are Decided

A planning application must generally be determined in accordance with the statutory development plan unless material considerations indicate otherwise.

Material considerations may include:

• national and local planning policy;
• the design, scale and appearance of the proposal;
• highway safety and traffic generation;
• effect on neighbouring amenity;
• privacy, overlooking, noise and disturbance;
• heritage and conservation;
• ecology and biodiversity;
• flooding and drainage;
• landscape and visual impact;
• housing need and economic benefits;
• contamination and public safety; and
• the planning history of the site.

Private matters such as loss of property value, commercial competition and disputes over ownership are not normally material planning considerations by themselves.

Delegated and Committee Decisions

Many applications are decided by planning officers under delegated authority. Larger, controversial or specially referred applications may be determined by a planning committee made up of elected councillors.

A solicitor can advise on committee procedure, prepare written representations and, where permitted, assist with a concise public-speaking statement.

Committee members must approach the application lawfully and fairly. A decision may be vulnerable to challenge if irrelevant matters are taken into account, material matters are ignored, or the committee fails to understand the advice before it.

Planning Objections and Representations

Residents, businesses, landowners and community organisations may submit representations in support of or in opposition to a planning application.

An effective objection should concentrate on legitimate planning issues rather than personal opposition to the applicant.

Relevant matters may include:

• conflict with the development plan;
• overdevelopment;
• harm to the character of the area;
• loss of privacy or unacceptable overlooking;
• noise, odour or disturbance;
• traffic and parking problems;
• highway or pedestrian safety;
• flood risk and drainage;
• harm to listed buildings or conservation areas;
• ecological damage;
• inadequate infrastructure; and
• failure to provide sufficient supporting information.

A planning solicitor can review an application, identify its legal and policy weaknesses and prepare representations for neighbours, parish or community councils and interest groups.

Objectors do not generally have the same statutory right of appeal as an unsuccessful planning applicant. A grant of permission may instead be challenged through judicial review where a material public-law error has occurred.

Permitted Development Rights

Permitted development rights grant planning permission automatically for specified forms of development, subject to conditions, limitations and exclusions.

Depending on the location and property, permitted development rights may cover certain:

• house extensions;
• roof alterations and loft conversions;
• outbuildings;
• solar panels and other renewable-energy equipment;
• changes of use;
• agricultural and forestry development;
• telecommunications equipment;
• demolition works; and
• temporary uses.

The rights available in England are not necessarily the same as those available in Wales.

Conditions and Limitations

Permitted development rights are subject to detailed restrictions relating to matters such as height, floorspace, position, previous extensions, materials and use.

Rights may be restricted or unavailable where the property is:

• a listed building;
• within a conservation area;
• within a national park or National Landscape;
• on protected or designated land;
• affected by a planning condition;
• subject to an Article 4 direction; or
• a flat, maisonette or another type of property outside the particular right.

Prior Approval

Some permitted development requires an application for prior approval before work begins or a use changes. The authority may consider specified matters such as transport, flooding, noise, appearance, natural light or the effect on neighbouring occupiers.

Prior approval is not the same as a full planning application, but the procedure and deadlines must be followed carefully.

Article 4 Directions

A local planning authority may use an Article 4 direction to withdraw specified permitted development rights in a defined area or for particular properties.

This does not necessarily prevent the development, but it means that a planning application must be made before the work or change of use can proceed.

Lawful Development Certificates

A lawful development certificate can provide formal confirmation that an existing use or development is lawful, or that a proposed development would be lawful if carried out as described.

A certificate may be useful where:

• a property is being sold or refinanced;
• there is uncertainty about permitted development rights;
• a use has continued for a significant period;
• planning conditions are disputed;
• the council has threatened enforcement action; or
• evidence of planning status is required for an investment or development.

Applications for existing use or development are determined primarily by evidence and planning law, rather than by whether the activity is desirable in planning terms.

Evidence may include:

• statutory declarations;
• dated photographs;
• invoices and accounts;
• tenancy agreements;
• business records;
• utility bills;
• maps and aerial photographs; and
• correspondence with the authority.

The relevant legal tests and enforcement time limits have changed over time and differ in some respects between England and Wales. Historic cases require careful analysis of the law operating when the alleged immunity arose.

Planning Conditions

Planning permission may be granted subject to conditions controlling how and when the development may proceed.

Conditions may deal with:

• approved drawings;
• materials and landscaping;
• opening or operating hours;
• highway works;
• drainage and contamination;
• ecology and biodiversity;
• construction management;
• occupation or use restrictions;
• removal of permitted development rights; and
• submission of further details.

Pre-commencement conditions may need to be discharged before any material operation begins. Starting development prematurely can make the development unlawful or place the permission at risk.

Removing or Varying Conditions

An application may be made to remove or vary a planning condition. Whether this is the appropriate procedure will depend on the proposed change and whether it would fundamentally alter the permission.

A solicitor can advise whether the condition is valid, sufficiently precise, enforceable and necessary for a planning purpose.

Planning Obligations and Infrastructure Contributions

Section 106 Agreements

A planning obligation under section 106 of the Town and Country Planning Act 1990 may be used to make development acceptable where planning conditions alone would not be sufficient.

Obligations may cover:

• affordable housing;
• highway and transport improvements;
• open space;
• education and health facilities;
• ecological mitigation;
• restrictions on use or occupation;
• financial contributions; and
• long-term management arrangements.

A planning solicitor can negotiate and draft the agreement, advise on its enforceability and deal with variations, releases and disputes.

Community Infrastructure Levy

Some developments may be liable for the Community Infrastructure Levy in authorities that have adopted a charging schedule. Different arrangements apply in Wales.

Strict procedural requirements govern liability, exemptions, commencement notices and payment. Failure to submit the correct notice at the correct time can result in loss of relief and financial surcharges.

Planning Enforcement

A breach of planning control may occur where development is carried out without required permission or where a condition or limitation has not been complied with.

Examples include:

• building without planning permission;
• an unauthorised change of use;
• failing to comply with approved plans;
• breaching an operating-hours condition;
• unauthorised works to a listed building;
• failing to comply with a planning obligation; and
• continuing temporary permission beyond its expiry.

A breach of planning control is not automatically a criminal offence. However, failure to comply with a valid enforcement notice, stop notice or certain other notices can lead to prosecution and further enforcement action.

Enforcement Is Discretionary

Local planning authorities generally have discretion whether to take enforcement action. They should consider whether action is expedient, proportionate and in the public interest.

An authority may decide to:

• take no further action;
• request additional information;
• invite a retrospective application;
• seek voluntary remedial work;
• serve a planning contravention notice;
• issue an enforcement warning notice where available;
• serve a breach of condition notice;
• serve an enforcement notice;
• use a temporary or ordinary stop notice;
• seek an injunction; or
• prosecute an offence.

The existence of a technical breach does not necessarily mean that formal enforcement will follow. The planning harm and the possibility of regularising the development will be relevant.

Planning Contravention Notices

A planning contravention notice may require the owner, occupier or another person to provide information about activities on the land.

The notice must be answered accurately and within the stated period. Providing false or misleading information, or failing to respond without a reasonable excuse, may be an offence.

Enforcement Warning Notices

An enforcement warning notice may be used where an authority considers that unauthorised development has a reasonable prospect of receiving permission, possibly subject to conditions.

The notice can require a retrospective planning application to be made within a specified period. Failure to apply may result in further enforcement action.

The precise statutory arrangements differ between England and Wales.

Enforcement Notices

An enforcement notice must identify the alleged breach, specify what must be done to remedy it and state when the notice takes effect and the period for compliance.

Requirements may include:

• stopping an unauthorised use;
• demolishing or altering a building;
• removing plant, equipment or stored material;
• restoring land to its previous condition;
• complying with a planning condition; or
• carrying out remedial works.

The notice may bind subsequent owners and occupiers. Purchasing land subject to an unresolved notice can therefore carry substantial risk.

Appealing an Enforcement Notice

An owner, person with a legal or equitable interest in the land or relevant occupier may be able to appeal against an enforcement notice.

Possible grounds can include arguments that:

• planning permission should be granted;
• the alleged breach did not occur;
• the activity does not amount to a breach of planning control;
• it was too late for the authority to take enforcement action;
• the notice was not properly served;
• the required steps are excessive; or
• the period allowed for compliance is too short.

An appeal must be made before the notice takes effect. Missing that deadline can remove the ordinary right of appeal, even where there may have been a strong defence.

In England, planning and enforcement appeals are now generally submitted through the Planning Inspectorate's online appeal service. Different submission arrangements apply in Wales.

Stop Notices and Temporary Stop Notices

A stop notice may require activities covered by an enforcement notice to cease before the time for complying with that notice has expired.

A temporary stop notice can require specified activities to stop immediately for a limited period while the authority investigates and decides what further action to take.

These notices can have an immediate commercial effect. Urgent advice may be required about compliance, representations, compensation or legal challenge.

Breach of Condition Notices

A breach of condition notice may require compliance with a condition attached to planning permission.

There is generally no ordinary appeal to the Planning Inspectorate against this type of notice. The recipient may need to consider compliance, negotiations with the authority or a court challenge where the notice is legally defective.

Enforcement Injunctions

A local planning authority may apply to the court for an injunction to restrain an actual or anticipated breach of planning control.

An injunction can bind a person directly, and breach may amount to contempt of court. The court can grant an injunction even where other planning-enforcement remedies are available.

Negotiating Planning Breaches

Not every suspected breach should proceed immediately to formal enforcement or litigation. A solicitor can negotiate with the authority about:

• whether a breach has occurred;
• the planning harm said to arise;
• a retrospective application;
• a lawful development certificate;
• amendments to the use or development;
• a timetable for voluntary compliance;
• variation of a condition;
• partial removal or modification of works; and
• withdrawal or correction of a defective notice.

Correspondence should be handled carefully. An admission or inaccurate account can affect a later appeal, certificate application or prosecution.

Planning Prosecutions

Criminal proceedings may follow certain breaches of planning legislation, including:

• failure to comply with an enforcement notice;
• failure to comply with a breach of condition notice;
• unauthorised works to a listed building;
• unauthorised advertisements;
• damage to protected trees;
• failure to answer an information notice;
• providing false or misleading information; and
• breach of an enforcement injunction.

A planning solicitor can advise on:

• whether the notice or underlying requirement is valid;
• whether the defendant was responsible for the breach;
• whether reasonable steps were taken to secure compliance;
• statutory defences;
• the admissibility and accuracy of the authority’s evidence;
• interviews under caution;
• proceeds of crime issues;
• mitigation; and
• appeals against conviction or sentence.

Planning offences can result in substantial or unlimited fines, depending on the legislation. A court may take account of any financial benefit obtained from the offence.

Planning Appeals

An applicant may usually appeal where a local planning authority:

• refuses planning permission;
• grants permission subject to disputed conditions;
• fails to determine an application within the relevant period;
• refuses approval of reserved matters;
• refuses listed building or advertisement consent; or
• refuses a lawful development certificate.

Appeals may be determined through written representations, a hearing or a public inquiry. The procedure chosen will depend on the nature and complexity of the case.

Appeal Deadlines

Appeal periods vary depending on the type of application and whether the enforcement action relates to the same development.

For many ordinary planning decisions, the appeal period is six months. Much shorter periods apply to some householders, minor commercial and advertisement appeals.

The decision notice and current procedural guidance should be checked immediately. Negotiating with the council does not normally extend the statutory appeal deadline.

New Appeal Procedures in England

Revised procedures apply in England to certain appeals relating to applications made on or after 1 April 2026. The changes affect how written-representation cases are prepared and when the parties must submit their full evidence.

An appellant should not assume that arguments or documents can be supplied later. The appeal must be complete and properly supported when submitted.

Costs in Planning Appeals

Each party generally bears its own appeal costs. However, an award may be made where another party has behaved unreasonably and caused unnecessary or wasted expense.

Unreasonable conduct may include failing to provide evidence, introducing late issues, maintaining an indefensible reason for refusal or causing an appeal that could reasonably have been avoided.

Challenging anInspector'ss Decision

A planning appeal decision cannot usually be challenged merely because a party disagrees with the planning judgment.

A challenge generally requires a legal error, such as:

• misinterpreting legislation or policy;
• failing to consider a material issue;
• considering an irrelevant matter;
• procedural unfairness;
• giving inadequate or unintelligible reasons;
• concluding unsupported by the reasoning; or
• acting outside the decision-maker's statutory powers.

Depending on the decision, the challenge may be made under a specific statutory procedure or through judicial review. Very short time limits apply, commonly six weeks from the decision.

A successful challenge will normally result in the decision being quashed and reconsidered. It does not automatically mean that planning permission will be granted or refused.

Judicial Review

Judicial review is the procedure used to challenge the lawfulness of a decision by a public body, including a local planning authority or the Secretary of State.

It may be relevant where:

• planning permission was granted unlawfully;
• the authority misunderstood its powers;
• a consultation process was unfair;
• the committee was materially misdirected;
• required environmental assessment was not carried out;
• an unlawful policy was adopted;
• a relevant consideration was ignored;
• apparent bias or predetermination affected the decision; or
• reasons were legally inadequate.

Permission from the court is required to proceed. The claimant must normally have sufficient interest in the decision.

Planning judicial review claims is subject to particularly short deadlines. Proceedings must be brought promptly and generally no later than six weeks after the relevant decision.

The court can refuse relief even where an error occurred if it is highly likely that the outcome would not have been substantially different.

Development Potential and Planning Strategy

A planning solicitor can advise landowners, purchasers, developers and lenders on the development potential of land.

This may involve:

• reviewing local and national planning policy;
• examining the planning history;
• identifying existing permissions and conditions;
• considering access and infrastructure constraints;
• reviewing conservation and environmental designations;
• analysing restrictive planning obligations;
• considering allocation through the local plan;
• advising on promotion agreements and options;
• assessing compulsory purchase risk; and
• identifying enforcement or lawful-use issues.

Planning due diligence should be undertaken before land is purchased or a development contract becomes unconditional.

Local Plans and Development Plans

Local plans identify how land should be used and developed over the plan period. They may allocate land for housing, employment, infrastructure or environmental protection.

Landowners and community groups can make representations during plan preparation and may participate in an examination conducted by an independent inspector.

A solicitor can advise on:

• promoting land for allocation;
• objecting to proposed allocations;
• challenging policies;
• responding to consultations;
• tests of soundness and legal compliance;
• strategic environmental assessment; and
• legal challenges to an adopted plan.

Listed Buildings, Conservation Areas and Heritage

Planning permission and listed building consent are separate controls. Works affecting the character of a listed building may require listed building consent even where ordinary planning permission is not required.

Unauthorised works to a listed building can be a criminal offence. There is no safe assumption that works become lawful merely because they were completed many years ago.

Heritage-related planning work may include:

• applications for listed building consent;
• development affecting the setting of a listed building;
• development in conservation areas;
• enforcement and prosecution;
• urgent works and repairs notices;
• challenges concerning the extent of a listing;
• applications to amend or remove a list entry; and
• heritage-related appeals and judicial review.

Tree Preservation Orders and Hedgerows

A tree preservation order can prohibit cutting down, topping, lopping, uprooting or wilfully damaging a protected tree without consent.

Separate notification requirements apply to many trees in conservation areas. Hedgerows may also receive protection under specific legislation.

Unauthorised work can lead to prosecution and a requirement to plant replacement trees.

A solicitor can advise on objections to a proposed order, applications for consent, appeals, enforcement and prosecution.

Environmental Planning Law

Development can engage a range of environmental controls in addition to ordinary planning policy.

Issues may include:

• environmental impact assessment;
• habitats regulations assessment;
• protected species and habitats;
• biodiversity requirements;
• nutrient or water neutrality;
• flooding and drainage;
• contaminated land;
• air and noise pollution;
• waste and environmental permitting;
• climate-change obligations; and
• strategic environmental assessment.

A planning solicitor can advise developers, public authorities, environmental groups and affected residents on compliance, objections, statutory challenges, injunctions and judicial review.

Compulsory Purchase

Compulsory purchase powers allow certain public bodies and other authorised organisations to acquire land or rights without the owner's agreement where the statutory requirements are satisfied.

Compulsory purchase may be used for:

• regeneration;
• housing development;
• highways and transport;
• utilities and infrastructure;
• town-centre redevelopment;
• environmental improvements; and
• other public-interest projects.

The acquiring authority must identify a proper statutory purpose and justify the interference with the owner's property rights.

Objecting to a Compulsory Purchase Order

A person affected by a compulsory purchase order may be able to submit an objection and participate in a public inquiry or other confirmation procedure.

Objections may concern:

• the absence of a compelling case in the public interest;
• lack of funding or deliverability;
• availability of a less intrusive alternative;
• defects in the acquiring authority’s procedure;
• failure to negotiate adequately;
• human rights and equality issues;
• the extent of the land required; and
• planning or environmental barriers to the scheme.

Compulsory Purchase Compensation

A person whose land or rights are acquired may be entitled to compensation. Depending on the circumstances, a claim can include:

• the value of the land or interest acquired;
• disturbance losses;
• injurious affection to retained land;
• severance;
• reasonable professional fees;
• home-loss or basic-loss payments where applicable; and
• other statutory payments.

The claimant must take reasonable steps to reduce avoidable loss. Detailed records of expenditure, relocation costs, business losses and professional advice should be retained.

Recent legislation allows the prospect of planning permission, sometimes called hope value, to be removed from compensation calculations in certain qualifying compulsory purchase orders. The wording of the order and the applicable legislation should be checked carefully.

Upper Tribunal Lands Chamber

Where compensation cannot be agreed, the dispute may be referred to the Upper Tribunal (Lands Chamber).

The tribunal deals with compulsory purchase and other land-compensation disputes. It replaced the former Lands Tribunal, so references to "Lands Tribunal litigation" in older documents are now outdated.

A planning or property solicitor may work with a chartered surveyor or specialist valuer to prepare the claim, negotiate compensation and represent the claimant before the tribunal.

Planning Agreements and Development Contracts

Planning issues may need to be addressed in commercial agreements concerning land.

A solicitor can advise on:

• conditional contracts;
• option agreements;
• promotion agreements;
• overage provisions;
• collaboration agreements;
• development agreements;
• planning obligations;
• highway agreements;
• infrastructure agreements; and
• agreements controlling appeals and planning strategy.

The contract should state who controls the application, who pays the costs, whether an appeal must be pursued and what level of permission will satisfy the planning condition.

Planning and Property Purchases

Purchasers should investigate planning matters before acquiring land or buildings.

Planning due diligence may reveal:

• unauthorised development;
• unresolved enforcement notices;
• conditions restricting occupation or use;
• planning obligations affecting the land;
• listed building or conservation constraints;
• compulsory purchase proposals;
• an Article 4 direction;
• tree preservation orders;
• permitted development limitations; and
• development proposals affecting neighbouring land.

A local authority search does not necessarily provide a complete assessment of planning risk. Relevant permissions, notices, plans and agreements should be reviewed directly.

Planning Law in Wales

Although much of the Town and Country Planning Act 1990 applies in Wales, Welsh planning policy and procedure are increasingly distinct.

Planning Wales, local development plans and Welsh Government guidance must be considered alongside the applicable legislation.

Differences can affect:

• permitted development rights;
• planning application procedure;
• appeal arrangements;
• enforcement warning notices;
• sustainable development duties;
• environmental policy;
• developments of national significance; and
• local development plan procedure.

A solicitor advising on Welsh land should apply the Welsh rules rather than assume that English guidance is directly transferable.

How a Planning Law Solicitor Can Help

A planning solicitor may assist with:

• planning applications and objections;
• permitted development rights;
• prior approval applications;
• lawful development certificates;
• planning conditions and obligations;
• section 106 agreements;
• development-potential advice;
• planning due diligence;
• local plan representations;
• enforcement investigations;
• negotiations over planning breaches;
• enforcement notice appeals;
• planning prosecutions;
• planning and listed building appeals;
• judicial review;
• statutory challenges to inspectors' decisions;
• listed buildings and conservation areas;
• tree and hedgerow controls;
• environmental planning law;
• compulsory purchase objections;
• compensation claims; and
• proceedings before the Upper Tribunal Lands Chamber.

Finding a Planning Law Solicitor

Planning cases frequently involve short deadlines, technical evidence and overlapping areas of public, property and environmental law. Early advice can preserve appeal rights, prevent enforcement action and identify legal problems before substantial development costs are incurred.

Use the search facility at the top of this page to find a planning law solicitor who can assess the site, decision or notice and advise on the appropriate next steps.

This guide provides general information about planning law in England and Wales. It does not constitute legal advice and should not be relied upon as a substitute for advice about a particular site, application, development or enforcement matter.