Swiss Cottage · NW3

Eton Avenue, Swiss Cottage

Wide avenue connecting Swiss Cottage to South Hampstead. Discover what renovation projects are possible and get expert guidance from our RIBA chartered architects.

About Eton Avenue

Wide avenue connecting Swiss Cottage to South Hampstead. The Victorian detached, Edwardian houses, period mansions found on this avenue represent some of Swiss Cottage's most characterful residential architecture.

Property Types

  • Victorian detached
  • Edwardian houses
  • period mansions

Property Values

Properties on Eton Avenue typically range from £2.5M-£7M, reflecting the avenue's desirable location in Swiss Cottage, NW3.

Conservation Status

Eton Avenue falls within the Swiss Cottage Conservation Area. All external alterations require careful consideration of the area's character and appearance. Our planning team will guide you through the requirements.

Planning Notes: Conservation area. TPO on mature trees.

Quick Facts

Location Swiss Cottage, NW3
Property Values £2.5M-£7M
Conservation Area Yes
Popular Projects  
  • Basement Conversion
  • Loft Conversion
  • Full Refurbishment
  • House Extension
Book Free Consultation

Popular Projects on Eton Avenue

Basement Conversion

Basement conversions on Eton Avenue provide the extra space that Swiss Cottage families need without compromising the period character above ground. Our structural engineers have extensive experience with the soil conditions in NW3.

Loft Conversion

The Victorian detached on Eton Avenue typically have generous roof spaces well-suited to loft conversions. Adding a master suite or home office can significantly increase the value of properties currently averaging £2.5M-£7M.

Full Refurbishment

Many properties on Eton Avenue benefit from comprehensive refurbishment, updating period features alongside modern living requirements. From rewiring to replastering, we handle every aspect of renovation in NW3.

House Extension

House extensions on Eton Avenue allow Swiss Cottage families to grow without relocating. The victorian detached, edwardian houses, period mansions here often have scope for rear or side extensions, subject to conservation area approval.

Planning & Permissions on Eton Avenue

Planning Notes

Conservation area. TPO on mature trees.

Our in-house planning consultants will prepare and submit all necessary applications for your Eton Avenue project, liaising directly with the local authority on your behalf.

97% Our planning approval rate across London, reflecting our deep understanding of local policies and relationships with planning officers.
Explore Planning Services →

Conservation Area Guidance

Eton Avenue is located within the Swiss Cottage Conservation Area. All external alterations must preserve or enhance the character and appearance of the area. This includes:

  • Using materials that match or complement the existing streetscape
  • Maintaining original architectural features such as windows, doors and decorative elements
  • Ensuring any extensions or additions are subordinate to the original building
  • Protecting mature trees and established garden landscapes

Estimated Costs on Eton Avenue

Indicative costs per square metre for renovation projects on Eton Avenue, Swiss Cottage. Prices reflect the NW3 location and typical property types found on this avenue.

Project Type Standard (per m²) Premium (per m²) Luxury (per m²)
Basement Conversion £3,150 - £4,200 £4,200 - £5,775 £5,775 - £8,400
Loft Conversion £2,625 - £3,360 £3,360 - £4,200 £4,200 - £5,775
Full Refurbishment £1,260 - £1,890 £1,890 - £2,940 £2,940 - £4,200
House Extension £2,625 - £3,360 £3,360 - £4,200 £4,200 - £5,775

Costs are indicative and based on typical projects in Swiss Cottage. Final pricing depends on specification, site conditions and scope. All prices exclude VAT.

Get a personalised estimate →

Other Streets in Swiss Cottage

Ready to Discuss Your Eton Avenue Project?

020 8054 8756

Visit our studio at 250 Finchley Road, NW3

Chat with us!