Planning Permission in Brent: 2026 Guide

Planning in Brent — what you need to know

If you are planning a home improvement project in Brent, understanding the local planning landscape is essential before you begin. Brent is managed by London Borough of Brent, which handles all planning applications, enforcement, and local plan policy for the borough.

Highly diverse borough; Queen's Park and Mapesbury are heritage-controlled; Wembley is a major regeneration hub. The borough has a population of approximately 340,000 residents and covers postcodes NW2, NW6, NW9, NW10, HA0, HA9.

The housing stock in Brent is predominantly edwardian villas in Queen's Park and Mapesbury; Victorian terraces in Kilburn and Harlesden; 1930s semi-detached in Wembley; post-war tower blocks in Church End. This mix of property types means that Brent Council deals with a wide range of applications, from rear extensions on terraced houses to loft conversions on semi-detached properties and full refurbishments of period homes in conservation areas.

With 22 designated conservation areas and active Article 4 Directions, Brent has a planning environment that balances heritage protection in conservation areas with generally permissive policies elsewhere.

At Architectural Drawings London, we prepare planning drawings and building regulations drawings for properties across all Brent postcodes. Our MCIAT chartered architectural technologists have experience with Brent Council and understand the specific policies, design guides, and precedents that apply in Brent. Our fixed fees start from £840 for our Essentials package and £1,750 for our Complete package — 30% below typical London architect rates.

Article 4 Directions in Brent

Brent has Article 4 Directions in place that remove certain Permitted Development rights. Article 4 for HMO conversions in specific streets around Wembley and Harlesden.

Article 4 Directions are used by councils to protect the character of an area by requiring planning permission for changes that would otherwise be permitted. If your property is affected by an Article 4 Direction in Brent, you will need to submit a full planning application even for works that would normally fall under Permitted Development. The council fee for a householder application is £258, and we prepare the necessary drawings and supporting documents.

It is important to note that Article 4 Directions in Brent are separate from conservation area restrictions. A property can be affected by both, and in practice many Article 4 areas overlap with conservation areas. We check the specific restrictions affecting your property as part of our initial assessment.

Conservation areas in Brent

Brent has 22 designated conservation areas. Notable conservation areas include:

• Queen's Park
• Mapesbury
• Kensal Green
• Harlesden
• Sudbury Court

In conservation areas, Permitted Development rights are more restricted than in non-designated areas. Key restrictions include:

• No cladding, stone, artificial stone, pebble dash, render, timber, plastic, or tile to any external wall without planning permission
• No side extensions under Permitted Development
• Rear extensions are limited and may require planning permission
• Dormer loft conversions facing the highway require planning permission
• Satellite dishes on front elevations or chimneys are not permitted
• Demolition of gates, walls, fences, or other boundary treatment requires planning permission

If your property is in a Brent conservation area, we can advise on what is achievable and prepare a planning application that addresses the conservation officer's requirements. Our 98% first-time approval rate includes a strong record in conservation area applications.

Popular projects in Brent

The types of planning applications most commonly submitted in Brent are shaped by the borough's housing stock. Edwardian villas in Queen's Park and Mapesbury; Victorian terraces in Kilburn and Harlesden; 1930s semi-detached in Wembley; post-war tower blocks in Church End, which drives demand for specific types of extensions and conversions.

Loft conversions

Brent has extensive streets of terraced housing, making loft conversions one of the most popular home improvement projects in the borough. A rear dormer loft conversion on a typical Victorian or Edwardian mid-terrace can add 20-30 square metres of living space and significant value to the property. In many cases, rear dormers fall under Permitted Development rights, though properties in conservation areas or subject to Article 4 Directions will need full planning permission. We prepare loft conversion drawings for properties across Brent, starting from £1,225 for our dedicated loft conversion package.

Side-return and rear extensions

The classic Victorian and Edwardian terrace layout in Brent leaves a side return passage that is prime territory for a kitchen extension. A single-storey rear or side-return extension can often be built under Permitted Development, extending up to 6 metres from the rear wall (or up to 8 metres for detached houses under the Prior Approval process). We prepare extension plans for properties across all Brent postcodes (NW2, NW6, NW9, NW10, HA0, HA9), with our Essentials package starting from £840.

Two-storey extensions

The semi-detached and detached housing stock in Brent is well suited to two-storey rear extensions, which almost always require planning permission. A two-storey extension can add a larger kitchen-diner at ground floor and an additional bedroom and bathroom above. Brent Council generally supports two-storey extensions that are subordinate to the original dwelling, set in from the boundary, and do not result in unacceptable loss of light or privacy to neighbours. Our Complete package from £1,750 covers full planning and building regulations drawings.

How much do planning drawings cost in Brent?

The cost of a planning application in Brent has two components: the council application fee and the professional drawing fees.

Our fixed-fee pricing means you know the cost upfront with no hourly billing surprises. We include a measured survey, existing and proposed plans, elevations, and a site plan — everything required for a valid planning submission to Brent Council. Our fees are 30% below typical London architect rates for the same scope of work.

For Permitted Development projects that do not require a planning application, we recommend obtaining a Lawful Development Certificate (£129 council fee). This provides formal legal confirmation that your project is lawful and prevents problems when selling the property. We prepare the LDC drawings and application on your behalf.

Our experience in Brent

We cover all Brent postcodes: NW2, NW6, NW9, NW10, HA0, HA9. Whether your property is in a conservation area, affected by an Article 4 Direction, or in an unrestricted residential street, we have experience with Brent Council and understand the borough's planning policies.

Our MCIAT chartered architectural technologists prepare planning drawings and building regulations drawings for residential projects across Brent. We handle the full process from initial measured survey through to planning submission, and we liaise with Brent Council on your behalf.

We also work in Brent's neighbouring boroughs:

Frequently asked questions