Can I rent out a garden annex?

This depends on your planning permission conditions. Some approvals restrict use to 'ancillary' accommodation for family only, while others permit independent letting. We recommend discussing your intentions with your installer at the feasibility stage.

How much does a garden annex cost?

Garden annexes typically start from £65,000 and range to £120,000+ depending on size, specification, and finishing level. While this is more than a standard garden room, it's significantly less than a traditional extension or buying additional property.

Can I rent out a garden annex?

This depends on your planning permission conditions. Some approvals restrict use to 'ancillary' accommodation for family only, while others permit independent letting. We recommend discussing your intentions with your installer at the feasibility stage.

How much does a garden annex cost?

Garden annexes typically start from £65,000 and range to £120,000+ depending on size, specification, and finishing level. While this is more than a standard garden room, it's significantly less than a traditional extension or buying additional property.

West Hampstead · North London

Garden Annexe in West Hampstead

Serving the London Borough of Camden planning area · West Hampstead (Jubilee & Overground)

Self-contained living spaces perfect for guests, family, or rental income. Built to our 2026 Part L standard — adding £55,000–£125,000 to your West Hampstead property. From £65,000.

0.15 W/m²K

U-value

£55,000–£125,000

Value uplift

25–40 days

Build time

£103

LDC fee

Trusted by homeowners in West Hampstead

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Matched to West Hampstead installers who know London Borough of Camden planning requirements.

Garden Annexe in West Hampstead, North London

West Hampstead is one of North London's most coveted addresses — a dense, vibrant neighbourhood of Victorian and Edwardian townhouses, well-regarded independent businesses, and three separate rail connections to Central London. Its property values and demographic profile place it firmly among London's premium residential locations. West Hampstead's Victorian and Edwardian houses, many of which are set back with substantial rear gardens, are well-suited to bespoke garden room installation. In a neighbourhood where indoor space is at a premium and buyers actively search for dedicated home offices, a well-designed garden room here carries significant value.

Why West Hampstead Homeowners Choose This Build

Keep family close while maintaining independence and privacy

Cost-effective alternative to care homes or house extensions

Increase your property value significantly

Faster construction compared to traditional building extensions

Potential rental income stream (subject to planning)

2026 Technical Specification

Wall construction150mm SIPs panels

U-value (wall)0.15 W/m²K

GlazingA-rated argon-filled

Acoustic reduction40dB+ standard

Data infrastructureCAT6A (10Gbps ready)

ElectricsPart P compliant

FoundationsGround screws (no concrete)

Build time25–40 days

FSC-certified timber · Ground screw foundations · Just One Tree partner

Planning in West Hampstead — London Borough of Camden

Parts of West Hampstead fall within Camden's conservation area network, including the West Hampstead Conservation Area. Camden's planning team is thorough but approachable for well-designed proposals. Some garden room projects here will need a design-quality-focused planning application rather than a simple LDC. Your installer will advise on the appropriate route. LDC fee: £103.

£103

LDC fee

2.5m

Max height (boundary)

50%

Max garden coverage

London Borough of Camden Portal Full PD Guide 2026

How We Work in West Hampstead

Feasibility Assessment

Check planning viability, site suitability, and building control requirements for habitable space.

Planning Application

Full management of the planning permission process, including design and submit documentation.

Building Control

Ensuring all regulations for habitable space are met, including fire safety and accessibility.

Complete Construction

Full build including all utilities, plumbing, electrics, and interior finishes.

See Completed Projects Near West Hampstead

Real builds with specs, materials, and planning routes documented.

View Portfolio

Garden Annexe FAQs — West Hampstead

Yes. Garden annexes intended for sleeping or living accommodation almost always require planning permission. Our partner installers manage the full application process on your behalf and can advise on the likelihood of approval in your specific borough.

“The team connected me with a fantastic installer who built my garden office in under 10 days. It's warm, quiet, and I love working from it every day.”

Sarah J.

Wimbledon, SW London · Garden Office

“Quick, professional, and totally transparent. I compared three quotes and picked the best one. My music studio is perfectly soundproofed.”

David M.

Highgate, North London · Music Studio