House Extension Barnet | Rear, Side & Double Storey Extensions

House Extensions in Barnet

Fixiz Ltd specialises in designing and building high-quality house extensions throughout the London Borough of Barnet. Whether you need a rear extension, side return extension, double-storey extension, or wrap-around extension, our experienced team delivers outstanding results for homeowners in High Barnet, Finchley, Edgware, Hendon, Mill Hill, Golders Green, and all surrounding areas.

Types of House Extensions We Build in Barnet

Rear Extensions in Barnet

A rear extension is the most popular way to add space to your Barnet home. We build single-storey and double-storey rear extensions that create spacious open-plan kitchen-diners, family rooms, and living areas. Many rear extensions in Barnet fall under permitted development, meaning no planning permission is required.

Side Return Extensions in Barnet

Side return extensions make use of the narrow alleyway beside your property. Popular with Victorian and Edwardian terrace owners across Barnet, these extensions transform dark, narrow kitchens into bright, open-plan spaces.

Double-Storey Extensions in Barnet

Maximise your additional space with a double-storey extension. Add a new kitchen-diner on the ground floor and an extra bedroom or bathroom above. Our Barnet double-storey projects add significant value to your property.

Wrap-Around Extensions in Barnet

Combining a rear and side extension, a wrap-around extension creates the maximum amount of additional living space. Ideal for growing families in Barnet who need a large open-plan kitchen, dining, and living area.

The Extension Process

• Free consultation – We visit your Barnet property to discuss your requirements
• Design & planning – Architectural drawings and planning applications if needed
• Building regulations – Full compliance with current building regulations
• Construction – Professional build with minimal disruption
• Completion – Final inspections, sign-off, and handover

How Much Does a House Extension Cost in Barnet?

Extension costs in Barnet vary depending on size, specification, and complexity. As a guide:

• Single-storey rear extension: from £32,000 to £65,000
• Side return extension: from £22,000 to £48,000
• Double-storey extension: from £55,000 to £110,000
• Wrap-around extension: from £55,000 to £95,000

Contact us for a detailed, personalised quote for your Barnet extension project.

Areas We Cover in Barnet

We build house extensions throughout Barnet, including High Barnet, East Barnet, New Barnet, Finchley, North Finchley, East Finchley, Edgware, Hendon, Mill Hill, Golders Green, Whetstone, Totteridge, Friern Barnet, Colindale, and Burnt Oak.

Get a Free Quote for Your Barnet Extension

Ready to extend your home in Barnet? Contact Fixiz for a free, no-obligation quote.Call us: 020 7971 1318WhatsApp: 07903 122 883Email: info@fixiz.co.ukRequest a Free Quote →