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 Annexes in West Hampstead

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

West Hampstead's high property values and premium Camden location make a garden annexe one of the most financially significant home improvements available in this part of inner London. Our vetted installers build self-contained annexes with full kitchen and bathroom provision from £65,000, adding between £55,000 and £125,000 to an already competitive residential market where space commands a real premium.

0.15

U-value

£55,000–£125,000

Value uplift

25–40 days

Build time

Trusted by homeowners in West Hampstead

Get Your Free Quote

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

Garden Annexes in West Hampstead

The Victorian and Edwardian conversions with surprisingly deep gardens that characterise West Hampstead make it particularly well-suited to self-contained habitable garden annexe construction. As a vibrant inner-London village with three rail connections, the area attracts creative professionals and young families who increasingly see creating independent living space for family members, guests, or rental income as a practical upgrade rather than a luxury. Every build we recommend here includes full Building Control compliance, kitchen and bathroom plumbing, separate utility connections, and fire-rated construction, meeting the 2026 Part L standard that Camden now expects.

Provide comfortable, independent living space for family members with a self-contained garden annex. Perfect for elderly relatives (Granny Annexes), young adults needing independence, guest accommodation, or even rental income. Our recommended installers build fully habitable homes to building control standards, complete with kitchens, bathrooms, and living areas. They offer a cost-effective alternative to care homes, house extensions, or buying a separate property.

Planning Authority: 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 Your installer will advise on the appropriate route.

Why Choose This?

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

Full kitchen and bathroom installation

Building Control compliant construction

Accessible design options (ramps, wet rooms, wide doorways)

High-performance insulation exceeding Part L requirements (U-value 0.15 W/m²K)

Separate utility connections and metering

How It Works

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.

Garden Annexes in West Hampstead — FAQs

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.

More garden room types in West Hampstead

Garden Offices Garden Gyms Music Studios Art Studios Bespoke Rooms All Garden Rooms in West Hampstead →

Get Your Free Garden Annexes Quote in West Hampstead

Matched to vetted West Hampstead installers within 24 hours. Up to 3 competitive quotes from specialists who know London Borough of Camden planning requirements.