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Extension builders in Ealing

The 10 extension builders from Google's results for Ealing, ranked on Google rating, online presence and other factors. Updated 10 September 2026.

Single storey, per m²
£2,100 – £2,900shell to finished
Typical single storey
£47,000 – £64,500around 20 m²
Double storey
£64,500 – £105,500around 30 m² over two floors
Ealing vs UK
+17%well above the UK median

Number 1: Up Great

5.0(22)out of 5, from 22 reviewson GoogleLondon

House extensions, internal refurbishments, and structural renovations are provided by Up Great across Ealing and West London. The team manages residential projects to update layouts and create extra living space for homeowners.

07818 428989 8a St Kilda Rd, London W13 9DE

Number 2: Gls Building Contractors

5.0(20)out of 5, from 20 reviewson GoogleLondon

Gls Building Contractors handles house extensions and structural building work for properties across London. Work focuses on altering layouts and improving space within residential buildings.

07878 660706 66 Grange Rd, London W5 5BX

Number 3: Alstruct Ltd

5.0(9)out of 5, from 9 reviewson GoogleLondon

Alstruct Ltd provides house extensions, loft conversions and basement conversions for homeowners in Chiswick and West London. Its services also include groundworks, full property renovations and garden landscaping.

020 8080 8240 15B Raven Rd, London E18 1HB

Number 4: 2pm Architects

5.0(9)out of 5, from 9 reviewson GoogleLondon

2pm Architects creates architectural designs for residential extension projects throughout Greater London. Working on rear, side, and wraparound structures, the practice assists householders seeking to enlarge kitchen areas and overall living space.

020 3920 9805 45 Dresden Rd, London N19 3BG

Number 5: LCCL Construction

4.9(29)out of 5, from 29 reviewson GooglePopes Dr, London

LCCL Construction is a design and build company converting lofts, extending houses and renovating homes across East London. It works in areas such as Hackney, Walthamstow, Leyton and Bow, where much of the housing is Victorian terraces, and provides architectural design as part of its service.

020 8037 7332 3rd Floor, Hathaway House, Popes Dr, London N3 1QF

Number 6: Ealing W5

5.0(1)out of 5, from 1 reviewson GoogleLondon

Ealing W5 executes open-plan structural alterations, kitchen reconfigurations, and bedroom extensions above existing ground-floor spaces. The London builders combine dining and living areas while altering internal and external walls to maximise interior light.

Chiswick, London W4 4NN

Number 7: Samklue Construction

4.7(41)out of 5, from 41 reviewson GoogleEaling

SKC Services constructs single-storey, double-storey, and wrap-around home extensions alongside loft conversions. Operating in Richmond and West London, including Teddington and Chiswick, the builder creates additional living areas to expand residential properties.

020 3002 7281

Number 8: Simply Extend

4.5(86)out of 5, from 86 reviewson GoogleEaling

Simply Extend builds house and kitchen extensions across East and South London, covering areas such as Croydon, Lambeth and Wandsworth. The business manages residential builds through assigned project managers, handling groundworks, brickwork construction, plastering and internal fittings.

0800 917 7571

Number 9: Design and Build

No Google reviews yetEaling

Design and Build delivers architect-led extension, renovation, and flat refurbishment projects across Chiswick and surrounding conservation areas. The company handles planning applications and structural work under local planning restrictions, including Article 4 directions in Bedford Park and Gunnersbury.

Number 10: Plus Rooms

No Google reviews yetEaling

Plus Rooms provides house and kitchen extension services to homeowners in Richmond-upon-Thames and across South West London. The company manages projects from design through to construction, handling planning regulatory requirements along the way. Its team also builds loft conversions.

What extension builders charge in Ealing

In Ealing, single storey, per m² typically costs £2,100 – £2,900. Labour in Greater London runs 17% above the UK median, which accounts for most of the difference from the same job elsewhere.

How to choose between them

  • Check the registration yourself. Trade body memberships are public, and each body's own register confirms them in a minute.
  • Get three quotes on the same specification. Written down, split into labour, materials and anything structural. Most people compare a total against a total and end up choosing between two different jobs.
  • Ask what is not included. Making good, waste removal, scaffolding and VAT are the four that turn a cheap quote into an average one.
  • Never pay a large deposit up front. Materials in advance is normal. Half the total before anyone turns up is not.

How this list is ordered

These are the firms from Google's results for "house extensions ealing". They are ranked on Google rating, online presence and other factors.

Work out the budget first

The figures above are Ealing ranges. These explain what drives them, so you can read a quote properly.

Extension builders in Ealing: common questions

How far can I extend without planning permission?

Under permitted development, three metres for a terrace or semi and four for a detached, doubled to six and eight under the prior approval process. Height, materials and how much garden you cover all carry separate limits, and none of it applies in a conservation area.

Do I need a party wall agreement?

If you are excavating within three metres of a neighbour's foundations or building on the boundary, yes. You must serve notice two months before work starts. Skipping it is the most common reason extension projects stall.