Clapham & surrounding London020 8050 3834

Home extensions & renovations

From loft conversions to new kitchens and bathrooms. See what we’ve built and talk to us about your plans.

Fitted kitchen with a long central island at Winchendon Road
Winchendon Road, SW6Kitchen project

Inside three London projects

Choose a property to see what changed, then explore the rooms in its gallery.

Kings Road, SW3

One bedroom became two

A one-bedroom flat reconfigured into two bedrooms, with a rewire, plumbing, kitchen and bathroom.

View original project gallery
Kitchen and living space at Kings Road
1 / 6 · Kitchen and living space at Kings RoadOpen photo gallery
Tiled shower room at Kings Road
Tiled shower room at Kings Road
Kitchen and living space at Kings RoadDining nook and tall windows at Kings RoadOpen-plan kitchen and dining space at Kings RoadTiled shower room at Kings RoadKings Road bathroom viewed from the entranceRenovated hallway and shower entrance at Kings Road

Carpenters Place, SW4

A renovation with a roof extension

A back-to-brick renovation with a roof extension, rewire and plumbing, kitchen and bathrooms.

View original project gallery
Staircase and hallway at Carpenters Place
1 / 6 · Staircase and hallway at Carpenters PlaceOpen photo gallery
Finished shower room at Carpenters Place
Finished shower room at Carpenters Place
Staircase and hallway at Carpenters PlaceFinished shower room at Carpenters PlaceCloakroom with a vanity at Carpenters PlaceWhite fitted kitchen at Carpenters PlaceWhite tiled bathroom at Carpenters PlaceShower enclosure and wall-hung basin at Carpenters Place

Wingfield Street, SE15

A loft, side return and rear extension

A three-bedroom house converted into a six-bedroom HMO, with a loft conversion, side return and rear kitchen extension.

View original project gallery
Kitchen extension at Wingfield Street
1 / 6 · Kitchen extension at Wingfield StreetOpen photo gallery
Bathroom vanity and shower enclosure at Wingfield Street
Bathroom vanity and shower enclosure at Wingfield Street
Kitchen extension at Wingfield StreetFitted kitchen and garden doors at Wingfield StreetBath and wall tiling at Wingfield StreetBathroom vanity and shower enclosure at Wingfield StreetTiled shower enclosure at Wingfield StreetBathroom with a dark vanity at Wingfield Street

Four more kitchen projects

Fitted kitchen at Richborne Terrace
Richborne TerraceSW8
Fitted kitchen at Ralston Street
Ralston StreetSW3
Fitted kitchen at Winchendon Road
Winchendon RoadSW6
Fitted kitchen at Horder Road
Horder RoadSW6

What our customers say

Selected five-star reviews on building work and property services.

4.9 / 563 Google reviews

Building work in and around Clapham

From adding a room to renovating the whole property.

Skylights and garden doors in the Wingfield Street kitchen extension
Wingfield Street, SE15Side return and rear kitchen extension

Add space

Extend into the garden or turn the loft into another room.

Refit or renovate

Rework the whole layout or start with a kitchen or bathroom.

Repair or finish

Get help with individual repairs, fittings and decorating.

Carpentry · Electrical work · Plumbing & tiling · Roofing

Property bookings and reports

For homeowners, landlords and estate agents preparing a property for sale or let.

Book a residential EPC

Choose the booking option for the number of habitable rooms in the property.

Which rooms count?

Count bedrooms, living and dining rooms, kitchens, studies, and converted loft or basement rooms. The booking page lists the full criteria.

Certificates & safety

  • Commercial EPC

    For shops, offices and other commercial premises. Have a description of the property and any floor plans to hand.

    Explore commercial EPCs
  • Electrical inspection

    Electrical installation condition reports. The online request is for up to 10 circuits.

    Request an EICR
  • Gas safety & servicing

    Enquire about landlord gas safety certificates and servicing.

    Enquire about gas safety

Marketing & lettings

Buying & selling

From plans to a finished extension

Kitchen and garden doors in the Wingfield Street extension
Wingfield Street, SE15 · Kitchen and garden access
  1. Consultation

    Talk through the property and what you want to achieve.

  2. Planning

    Discuss the plans and agree which work the quote covers.

  3. Build

    Building work begins. Plumbing, electrics and decorating follow where agreed.

  4. Completion

    The team carries out final checks and answers any questions.

More about extensions

Common questions

Where do you take on building work?

WeKnowHow is based in Clapham and works across surrounding London neighbourhoods. Share your postcode when you get in touch.

Ask about your postcode
What should I send for a building enquiry?

Share the property postcode, what you want to change, and any photos or plans you already have.

Contact WeKnowHow
What counts as a habitable room for an EPC?

Count bedrooms, living and dining rooms, kitchens, studies, and converted loft or basement rooms. The booking page lists the full criteria.

See EPC booking options
Can I book photography and a floor plan together?

Yes. WeKnowHow offers a combined appointment for measured floor plans and property photography.

See combined appointments

Tell us what you’re planning

Send your postcode and a few details about the building work you have in mind.

Need a certificate or report? See property bookings

Dining nook in the refurbished Kings Road flat
Kings Road, SW3
Kitchen and living space at Kings Road