105 Tavistock Crescent, Mitcham, England, CR4 1QJ
Building, extensions and refurbishment
Quote on request.
London · Building & conversions
Builders in London
Phone numbers for builders covering London — extensions, loft conversions and refurbishment. Open a profile and call the business yourself. This site does not send your job.
Extensions and loft work need more than a day rate. The renovation budget tool can sit beside a local quote. A card that says London may be based in Croydon, Ilford or Harrow. Ask which borough they will actually drive to, and whether the congestion charge and a parking bay are inside the figure. Profiles show a name, the area they cover and a phone number. Public qualifications such as Gas Safe or NICEIC appear only when they are on the profile. Read the cost notes for a sourced national range; a figure on a card is not a quote.
London
Full bathroom and kitchen projects, whole-house refurbishment, plumbing
Advertised honest pricing.
Unit 7 Meridian Business Park Fleming Road, Waltham Abbey, London, United Kingdom, EN9 3BZ
Building, extensions and refurbishment
Quote on request.
Campbell Court Office, Queens Gate Gardens, London, SW7 4PD
Building, extensions and refurbishment
Quote on request.
Unit 7 Vulcan House, Restmor Way, Wallington, England, SM6 7AH
Building, extensions and refurbishment
Quote on request.
16 Lincoln Close, Greenford, London UB6 8NR
Building, extensions and refurbishment
Quote on request.
Ceme centre, Marsh Way, Rainham, London, RM13 8EU
Building, extensions and refurbishment
Quote on request.
South West London
Building, extensions and refurbishment
Quote on request.
123 Woodlands Road, Ilford, London IG1 1JP
Building, extensions and refurbishment
Quote on request.
85 Gleneldon Road, London SW16 2BH
Building, extensions and refurbishment
Quote on request.
North London
Building, extensions and refurbishment
Quote on request.
213 Shirland Road, London, England, W9 3JP
Building, extensions and refurbishment
Quote on request.
London
Building, extensions and refurbishment
Quote on request.
London
Building, extensions and refurbishment
Quote on request.
London
Building, extensions and refurbishment
Quote on request.
765 Finchley Road, London, NW11 8DN
Building, extensions and refurbishment
Quote on request.
London
Kitchen and bathroom refits, whole-house conversions, electrical and plumbing, NICEIC / Gas Safe
Quote on request.
Ealing Cross, 1st Floor, London W5 5TH
Building, extensions and refurbishment
Quote on request.
3 Sussex House, Stratton Close, Edgware, London, HA8 6PY
Building, extensions and refurbishment
Quote on request.
245 Liverpool Road, London N1 1LX
Building, extensions and refurbishment
Quote on request.
London / Essex
Joinery, garage conversions, wall removal, roof leak repairs, whole-house repairs. 17 years, insured
Quote on request.
36 Hall Road, London E15 2BT
Building, extensions and refurbishment
Quote on request.
Suite 126, 52A Windsor Street, Uxbridge, London, UB8 1AB
Building, extensions and refurbishment
Quote on request.
542 Uxbridge Road, Pinner, London, HA5 3QA
Building, extensions and refurbishment
Quote on request.
Flat 5, Eden House, Este Road, London SW11 2TN
Building, extensions and refurbishment
Quote on request.
Bethnal Green / East London (E2 / E8)
Conversions and extensions, brickwork, plastering and tiling, painting, kitchens and bathrooms, roofs, drainage. Gas and electrical qualifications
Quote on request.
8 Melbourne Gardens, Chadwell Heath, London, RM6 6TA
Building, extensions and refurbishment
Quote on request.
London (west, north-west, south-west and central London)
New builds, conversions and extensions, brickwork, plastering and tiling, painting, kitchens and bathrooms, roofs, foundations and drainage
Quote on request.
47 - 49 Park Royal Road, Acton, London, Middlesex London, England, NW10 7LQ
Building, extensions and refurbishment
Quote on request.
SE London (Beckenham / Bromley / Lewisham / Catford)
New builds and conversions across south-east London. 25 years
Quote on request.
Rear of 237 Gipsy Road, London SE27 9QY
Building, extensions and refurbishment
Quote on request.
London E4 9EL (Waltham Forest)
Structural repairs, extensions and conversions, brick, timber, tile and paint, kitchens and bathrooms, roofs, doors and windows, NICEIC electrical
Quote on request.
156a South Ealing Road, London W5 4QL
Building, extensions and refurbishment
Quote on request.
180 Lowry Crescent, Mitcham, London CR4 3QW
Building, extensions and refurbishment
Quote on request.
NW London
Building, extensions and refurbishment
Quote on request.
London (Finsbury / Bloomsbury / City)
New builds, extensions and conversions, brickwork, plastering and tiling, painting, kitchens and bathrooms, roofs, foundations and drainage
Quote on request.
4 Sherborne Road, Petts Wood, Orpington, London, BR5 1GW
Building, extensions and refurbishment
Quote on request.
10 Collinwood Gardens, Ilford, London IG5 0AW
Building, extensions and refurbishment
Quote on request.
Orpington, Kent (covering London and the south-east)
Conversions and extensions, brickwork, kitchens and bathrooms, drainage, plastering and tiling, foundations and externals, painting. 35+ years
Quote on request.
North London / St Albans (N13 / N14 / N18)
Bathrooms and kitchens, enamel repairs, internal additions
Quote on request.
Walthamstow. Covering London, Essex and Kent
Bespoke kitchens, worktops, whole-house refurbishment, plastering and tiling
Quote on request.
Flat 28, Columbia Point, London SE16 7BE
Building, extensions and refurbishment
Quote on request.
78 York Street, London W1H 1DP
Small plumbing and electrical jobs, boilers, installations, general handyman work. Same-day or next-day small jobs
First 30 minutes £60 + VAT, then £30 + VAT per 30 minutes. No call-out fee.
940 Green Lanes, London, United Kingdom, N21 2AD
Building, extensions and refurbishment
Quote on request.
Riverbank House, 1 Putney Bridge Approach, London SW6 3JD
Extensions, lofts, whole-house refurbishment, roofs, tiling and painting, electrical, plumbing, joinery and plastering
Quote on request.
28 Hoylake Road, London W3 7NP
Building, extensions and refurbishment
Quote on request.
16 Crest Road, South Croydon, London CR2 7JQ
Building, extensions and refurbishment
Quote on request.
9 Russell Gardens, London NW11 9NJ
Building, extensions and refurbishment
Quote on request.
Unit 14, Garth Road Industrial Centre, Morden, London SM4 4LZ
Building, extensions and refurbishment
Quote on request.
23 Winchelsea Avenue, Bexleyheath, London, DA7 5HR
Building, extensions and refurbishment
Quote on request.
London SW17 0PF
House refurbishment, repairs, painting, joinery, plumbing, property maintenance
Quote on request.
Niddry Lodge, 51 Holland Street, London W8 7BJ
Building, extensions and refurbishment
Quote on request.
29 Queen Annes Gardens, Enfield, London EN1 2JH
Building, extensions and refurbishment
Quote on request.
No businesses match those extra filters. Clear 24-hour or qualification to widen the list.
Typical building & conversions costs
Checkatrade’s house-extension guide, per-square-metre table last updated March 2025, is a national sense-check for shell versus finished work. It is not a local tariff. A side return in a London terrace usually needs a steel, a party-wall award and a way to get muck out through the house. Ask which of those three the first figure actually contains.
A local rule to check in London
Many extensions, loft conversions and structural openings need building control, and some need planning. A listing is not an approval and not a party-wall agreement.
Questions before you phone
How do I find builders in London on this list?
Islington still has butterfly roofs over narrow returns, and a mansion block in Maida Vale hides the soil stack in a riser you cannot see from the street. Basement flats often need a long flue run before a boiler can stay where it is. Names, service areas and phone numbers sit on the cards. Open a profile and call the firm yourself. A card that says London may be based in Croydon, Ilford or Harrow. Ask which borough they will actually drive to, and whether the congestion charge and a parking bay are inside the figure.
Does this page send my job to a London building & conversions firm?
No. You place the call. This site does not email or text anyone on your behalf.
What should the written price say for building & conversions in London?
Split the first number into steel, party wall, skip and fit-out. A shell price that ignores the lightwell crane will move once they see the garden.
What is easy to miss before booking in London?
Party-wall notices and a suspended bay are the usual extras on a terrace. Conservation streets in a borough such as Kensington can stop a flue from leaving the front elevation.
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