How councils decide backland planning applications

How does a council decide a backland planning application?

A council decides a backland application by testing it against its development plan and national policy, then weighing up any other material considerations. In both England and Wales the law says applications should be decided in line with the development plan unless material considerations indicate otherwise.

In practice a planning officer visits the site, reads the drawings and reports, considers what neighbours and consultees have said, and writes a report that recommends approval or refusal. The report sets out each issue, the policy that applies and the officer’s judgement. Reading a few recent reports on backland schemes in your area is the quickest way to see how your council thinks.

Which policies apply in England?

In England the main policies are the council’s Local Plan, any neighbourhood plan, local design guides, and the National Planning Policy Framework. The Framework was replaced on 17 August 2026, and the new version deals with garden development more directly than before.

Inside settlements, the starting point is that development should be approved unless the benefits would be substantially outweighed by any adverse effects. The Framework gives substantial weight to extra homes within existing plots, including additional units within residential gardens, provided they meet three tests.

• Be consistent with the overall street scene, unless, for example, the development would not be visible from the street frontage.
• Maintain safe access and acceptable living standards for residents and neighbours in terms of daylight, sunlight, privacy and outdoor space.
• Where garden land is used, not take up more than twice the footprint of all the existing buildings on the site, and keep at least half of the undeveloped garden, unless the extra development causes no harm to the overall character of the area.

Which policies apply in Wales?

In Wales the main policies are the council’s Local Development Plan (LDP), its supplementary planning guidance, Planning Policy Wales and the Technical Advice Notes, especially TAN 12 on design. There is no single national test for garden plots, so local guidance carries much of the detail.

Planning Policy Wales is built around placemaking. It says the special characteristics of an area should be central to the design of a development, and that the planning system must consider the impacts of new development on existing communities and safeguard amenity. Where amenity impacts cannot be overcome satisfactorily, it says development should be refused.

TAN 12 expects designs to start from a proper appraisal of the site and its context, and design and access statements are mandatory for certain applications. Many Welsh councils have their own infill or backland guidance, which is worth finding before any drawings are done.

What counts as a material consideration?

A material consideration is anything relevant to the planning decision that relates to the use and development of land in the public interest. For backland schemes, the list is fairly predictable.

• Character and pattern of the area, including plot sizes, building lines, heights and spacing.
• Overlooking and loss of privacy for neighbouring homes and gardens.
• Overshadowing and loss of daylight or sunlight.
• Noise, lights and disturbance from cars using the new access.
• Highway safety, visibility at the junction, parking and turning.
• Garden space left for the existing house and provided for the new one.
• Trees, hedges and wildlife, and flood risk and drainage.
• Planning history, including earlier refusals and appeal decisions nearby.

What does a council not take into account?

A council does not take into account purely private interests, such as the effect on a neighbour’s property value. National guidance in England says the protection of purely private interests is not a material consideration, and that the loss of private rights to light is not material either, although planning still looks at daylight as an amenity issue.

Local opposition or support is not, in itself, a reason to refuse or grant permission. What matters is whether the objections raise genuine planning issues. Ten letters about overlooking carry weight because overlooking is a planning issue; a hundred letters saying people simply do not want a new house carry far less.

Private legal matters, such as restrictive covenants or boundary disputes, are also separate from planning. A council can grant permission on land that a covenant stops you building on, so both need resolving.

How do councils judge character, privacy and access?

Councils judge character by comparing the proposal with the existing pattern, privacy by distances and window positions, and access by width, visibility and the effect on neighbours. Each test has its own local guidance.

On character, officers ask whether a home behind the street would look natural. Existing backland homes nearby, a rear lane or a former garage court help. A two-storey house in the middle of a block of long, unbroken gardens is harder to justify than a low bungalow that cannot be seen from the road.

On privacy, many councils use around 21 metres between facing back windows and around 12 to 15 metres between a back window and a blank side wall; your council’s own guide decides. On daylight, many councils refer to the Building Research Establishment’s guide to site layout planning for daylight and sunlight.

On access, the council’s highways team checks width, visibility where the drive meets the road, and room to turn. Building control will separately check fire engine access or, in Wales, sprinklers. In England, national policy says development should be refused on highways grounds where there would be an unacceptable impact on highway safety.

Is pre-application advice worth it?

Pre-application advice is usually worth it for backland schemes, because it surfaces the council’s main concerns before you pay for a full application. It works best when you go in with a measured survey and a simple sketch scheme rather than a vague idea.

In England, councils may charge for pre-application advice, but national guidance says charges must not exceed the cost of providing the service. The advice is not binding and cannot pre-empt the decision, but it can be a material consideration in a later application.

In Wales, every council must offer a statutory pre-application service. Once a valid request and the fee are received, the council must respond within 21 days, or a longer period agreed in writing, with the site’s planning history, the relevant policies and an initial assessment of the proposal.

Who makes the decision: officers or the planning committee?

Most applications for one or two homes are decided by planning officers under delegated powers. In England, from 31 October 2026, national rules require applications for one to nine homes on sites under half a hectare to be decided by officers rather than a planning committee. In Wales, each council sets its own rules on which applications go to committee, often triggered by a councillor’s request or a certain level of objection.

At committee, councillors read the officer’s report, hear short speeches from objectors, the applicant and sometimes ward councillors, and then vote. They can go against the officer’s recommendation, but must give planning reasons. Whoever decides, keep neighbours informed and make sure the application answers their concerns, because the officer’s report will weigh them.

Councils in England and Wales have a statutory period of eight weeks to decide most applications for small housing schemes, although longer periods are often agreed in writing. In England, if no decision is made in time and no extension is agreed, the applicant can appeal against non-determination.

What conditions do councils attach to backland permissions?

Councils attach conditions to control details that would otherwise make the scheme unacceptable. National guidance in England says conditions must be necessary, relevant to planning and to the development, enforceable, precise, and reasonable in all other respects.

Typical conditions on garden plots cover materials, landscaping and boundary treatments, obscure glazing to certain windows, completion of the access and parking before anyone moves in, tree protection during building, drainage details and sometimes construction hours. Some councils also remove permitted development rights so the new home cannot later be extended without permission, although national policy says this needs clear justification.

Pre-commencement conditions, which must be discharged before work starts, need the applicant’s written agreement in England. Discharging conditions takes a separate application and fee, so build that time into any sale or building programme.

What happens if the council refuses?

If the council refuses, you can revise the scheme and reapply, or appeal. The refusal notice lists the reasons, and reading them carefully tells you which route makes sense.

In England, appeals go to the Planning Inspectorate, and you can appeal for up to six months from the date on the council’s decision letter. In Wales, appeals go to Planning and Environment Decisions Wales, and you must appeal within six months of the date on the decision notice.

For example, a scheme refused only because one first-floor window would overlook a neighbour is usually better redesigned and resubmitted. A scheme refused because the council considers any home behind that street out of character is a judgement an independent inspector may see differently, and an appeal may be the better route.