House Extensions in Camden: Hampstead, Kentish Town and NW1/NW3/NW5 Expert Guide 2026

Looking to extend your Camden home? House extensions are an excellent way to add space and value to properties in Hampstead, Kentish Town, Camden Town, and surrounding NW postcode areas. This comprehensive guide covers everything homeowners need to know about house extensions in Camden.

Why Choose a House Extension in Camden?

Camden properties, from Victorian terraces in Kentish Town to period homes in Hampstead, offer significant extension potential. With Camden being one of London’s most desirable boroughs, extending rather than moving makes excellent financial sense.

Planning Permission and Conservation Areas

Camden has extensive conservation areas, particularly in Hampstead and Belsize Park. Key considerations include:

  • Many extensions fall under Permitted Development rights
  • Conservation areas have stricter requirements
  • Listed buildings need Listed Building Consent
  • Basement extensions often require planning permission

Always check with Camden Council before starting work.

Types of House Extensions

Popular extension types in Camden include:

Basement extensions in Camden

Popular in Hampstead and Belsize Park where garden space is limited but property values justify the investment.

Single-storey rear extensions

Ideal for creating open-plan kitchen-diners that connect to the garden.

Side return extensions

Perfect for Victorian terraces in Kentish Town and Camden Town, making use of the narrow alley alongside the property.

Roof extensions and dormers

Adding valuable extra bedrooms or bathrooms by converting unused loft space.

House Extension Costs in Camden 2026

Extension TypeTypical Cost Range
Single-storey rear (3m)£45,000 – £65,000
Single-storey rear (6m)£65,000 – £100,000
Side return infill£40,000 – £60,000
Basement extension£150,000 – £300,000+

Costs in Camden tend to be higher due to conservation area requirements and property access considerations.

Building Regulations

All house extensions require Building Regulations approval covering:

  • Structural calculations and foundations
  • Thermal insulation standards
  • Electrical and plumbing compliance
  • Fire safety requirements
  • Party wall agreements

Typical Project Timeline

A standard house extension in Camden typically takes:

  • Design and planning: 8-12 weeks
  • Building Regulations approval: 4-6 weeks
  • Construction: 10-16 weeks
  • Total project time: 6-9 months

Why Choose Fixiz LTD?

Fixiz LTD has extensive experience with Camden’s period properties and conservation area requirements. Our team understands the unique challenges of house extensions in this area and delivers high-quality results.

Frequently Asked Questions

Do I need planning permission?
Many extensions fall under Permitted Development, but conservation areas require additional consideration.

How much value will an extension add?
Typically 15-25% of property value, potentially £150,000-£300,000+ in prime Camden locations.

Get Your Free Quote

Ready to extend your Camden home? Contact Fixiz LTD today for a free survey and quote.

Serving Hampstead, Kentish Town, Camden Town, Belsize Park, Primrose Hill, and all NW1, NW3, NW5, NW6 postcodes.