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House Extension Brent | Professional House Extensions in Brent
Fixiz Ltd delivers professional house extension services across the London Borough of Brent. Whether you need a single-storey rear extension, a double-storey side extension, or a wrap-around extension, our experienced team will design and build the perfect addition to your home in Wembley, Harlesden, Kilburn, Willesden, or any surrounding area.

Why Choose a House Extension in Brent?
Brent is one of London’s most diverse and rapidly developing boroughs, with a wide variety of residential properties from Victorian terraces to modern family homes. With the area seeing strong investment around Wembley and Harlesden, a house extension in Brent is a highly cost-effective alternative to moving. A well-designed extension can add significant value to your property while creating the space your family needs to grow. According to GOV.UK planning guidance, many extensions can be completed under permitted development rights.
Types of House Extensions We Build in Brent
Single-Storey Rear Extensions
The most popular type of house extension in Brent. A rear extension can create a spacious open-plan kitchen-diner, a larger living area, or a dedicated family room. Many single-storey rear extensions up to 6 metres for semi-detached or 8 metres for detached properties can be built under permitted development.
Double-Storey Extensions
Double-storey extensions provide additional space on both floors, typically adding a kitchen-diner below and an extra bedroom or bathroom above. This maximises the value added to your property and is ideal for growing families in areas like Wembley and Willesden.
Side Return Extensions
Side return extensions make use of the narrow alley that runs alongside many terraced and semi-detached properties. By incorporating this unused space, you can significantly widen your kitchen or living area without losing garden space.
Wrap-Around Extensions
A wrap-around extension combines a side and rear extension into one, creating the maximum amount of additional ground floor space. This is an excellent choice for homeowners wanting a large open-plan kitchen, dining, and living area.
House Extension Brent – Planning Permission
Many house extensions in Brent can be built under permitted development rights without requiring planning permission. However, the size, height, and position of the extension must comply with specific rules. Properties within conservation areas or in areas with Article 4 directions may face additional restrictions. Our team will assess your property and advise on all planning requirements from the start.
All extensions must comply with building regulations covering foundations, structural integrity, damp proofing, drainage, insulation, and fire safety. Fixiz Ltd manages the complete building control process on your behalf.
House Extension Costs in Brent
House extension Brent costs vary depending on the type, size, and specification:
- Single-storey rear extension: from £35,000
- Side return extension: from £25,000
- Double-storey extension: from £55,000
- Wrap-around extension: from £45,000
We provide fully detailed quotations after a free site survey with no hidden costs or surprises.
Our House Extension Brent Process
- Free site survey and consultation
- Architectural design and drawings
- Structural engineering calculations
- Planning and building control applications
- Party wall notices where required
- Construction and project management
- Final inspection and completion certificate
Why Choose Fixiz Ltd?
- Over 10 years of experience building extensions across London
- Fully insured and CITB certified
- Full project management from design to completion
- Building regulations compliant with full sign-off
- Transparent pricing with no hidden fees
- Free site survey and detailed quotation
Get a Free Quote
Contact Fixiz Ltd today for a free house extension consultation in Brent. We serve Wembley, Harlesden, Kilburn, Willesden, Stonebridge, Neasden, Queensbury, and all surrounding areas. You can also explore our house extension services for more details on what we offer across London.
