Question 1

What is the cheapest way to add space to a house in Surrey?

Accepted Answer

A garage conversion is typically the most cost-effective way to add living space, starting from around £15,000. Rear extensions and loft conversions are also excellent options. The best choice depends on your property layout and local planning constraints.

Question 2

Does Grand Innovations handle planning permission?

Accepted Answer

Yes, we manage the entire planning process including architectural designs, planning applications, structural engineering, and building regulations compliance. We work with local councils across Surrey and London on your behalf.

Question 3

How much does a home extension cost in Surrey?

Accepted Answer

Home extension costs in Surrey typically range from £40,000 to £120,000 depending on size, specification, and complexity. We provide detailed, transparent cost proposals before any work begins, so you know exactly what to expect.

Question 4

How long does a home extension take in the UK?

Accepted Answer

A single-storey rear extension usually takes 10 to 14 weeks from foundation to completion. Double-storey and wrap-around extensions take 16 to 24 weeks. We provide a detailed project timeline during the proposal stage.

Question 5

Do I need planning permission for a rear extension?

Accepted Answer

Many single-storey rear extensions fall under Permitted Development and don't require planning permission. This depends on your property type, location, and the size of the extension. We confirm the position during our free initial assessment.

Question 6

What types of extensions can be built under Permitted Development?

Accepted Answer

Under Permitted Development, you can typically build single-storey rear extensions up to 3 metres (attached houses) or 4 metres (detached). Side extensions up to half the width of the original house are also usually permitted. Conservation areas have additional restrictions.

Question 7

What is a wrap-around extension?

Accepted Answer

A wrap-around extension combines a rear and side-return extension into one L-shaped structure. It maximises the additional floor space and is popular with Victorian and Edwardian terraced houses. They typically add 20 to 40 square metres of living space.

Extensions

Raising the standard.

What's Included in Our Extensions Service

Initial Consultation & Feasibility

Architectural Design & Planning

Structural Engineering

Dedicated Project Management

Transparent Weekly Billing

Common Questions About Extensions