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Builders · Croydon & South London

We build it
right.

Build Site is a Croydon building company taking on house extensions, full renovations and construction, with plumbing and electrics handled by one trusted team from first visit to finished job.

Extensions& renovations
All tradesone team
Freeno-obligation quotes
Completed rear extension with new brickwork, rooflight and sliding doors by Build Site in South London
Fully InsuredPublic liability
Extensions & BuildsStructure to finish
Free QuotesNo-obligation
RecommendedWord of mouth
Croydon BasedSouth London-wide
01 / What we do

Extensions, renovations & everything between

From a rear extension to a full property renovation, Build Site handles the building work and the trades, so it's one team and one standard from the first measure to the final finish.

02 / Recent work

On the tools

Completed rear extension with new brickwork and tiled roofExtension · exterior
Structural opening formed with new joists during a renovationFull renovation
Steel beam and new roof joists on an extension buildConstruction
Walk-in shower with brushed gold rainfall head and dark marble feature wallBathroom · plumbing
Countertop basin with brushed gold wall tap and LED mirrorBathroom · electrics
Porcelain patio and new lawn finished after an extensionPatio · garden
Build Site extension groundworks in progress at a South London home On site · Croydon
03 / The firm

Built on referrals, now online

Build Site is a Croydon building company that has grown mainly through word of mouth, taking on house extensions, renovations and general construction across South London.

Because the building work runs alongside plumbing and electrics, you deal with one team and one standard rather than chasing separate trades. Every job is planned, priced and managed from the first visit through to handover.

Based in Croydon, we cover New Malden, Mitcham, Streatham and the surrounding South London areas.

NI
Numan IlahiBuild Site
04 / Why Build Site

What you get working with us

01

Whole job, one team

Building, plumbing and electrics handled in-house, with no separate contractors to line up and chase.

02

Recommended by clients

Most of our work comes from referrals and repeat customers who pass our name on after the job's done.

03

Clear, honest pricing

A detailed quote up front and straight answers throughout, so you always know where the project stands.

04

Managed start to finish

One point of contact from the first measure to handover, with the site kept tidy and the work kept moving.

05 / Where we work

Based in Croydon, working across South London

Covering Croydon and the surrounding South London areas, including New Malden, Mitcham and Streatham, for extensions, renovations and building work.

Covering Croydon and the surrounding South London boroughs, ask if you're nearby.

06 / Job diary

One job, start to finish

A recent South London extension photographed as it happened, from the first trench to the finished patio. This is how a Build Site job runs: groundworks and drainage, steels and joists, roof and rooflights, heating and first-fix, then the finish.

Footings measured out against the existing wall
Footings trench dug at the back of the house
Footing trench excavated along the existing brickwork
Original clay drain exposed ready to connect into
New drainage run and inspection chamber installed
Footings brickwork and blockwork coming up off the base
New joists fixed on hangers to the wall plate
Roof joists installed across the new extension
New joists and hangers over the blockwork shell
Steel beam in with new roof joists over the shell
First-fix cables run through the new roof joists
Rooflight opening framed out with the steel and props in
Rooflight opening formed in the new flat roof
Rooflight upstand boxed out and first-fix wiring dropped
Breathable membrane laid over the new roof
Insulated flat roof deck with the rooflight kerb formed
Insulation boards fitted around the rooflight upstand
Underfloor heating loops running from room to room
Underfloor heating pipework laid ready for screed
Underfloor heating pipes clipped down on insulated boards
Finished brickwork on the completed extension gable
Completed extension with new tiled roof and white windows
Completed rear extension with rooflight and sliding doors
Porcelain patio and new lawn laid to finish the job
07 / Bathroom

A bathroom refit, floor to ceiling

A recent full bathroom refit photographed on handover day. Marble-effect porcelain to the walls and floor, a walk-in shower with a dark feature wall, brushed gold fittings throughout and a wall-hung suite. Strip-out, plumbing, electrics and tiling all handled in-house. Press play for a walk round the finished room.

Finished bathroom with marble-effect tiles, wall-hung toilet and walk-in shower
Walk-in shower with brushed gold rainfall head and dark marble feature wall
Countertop basin with brushed gold wall tap and LED mirror
LED mirror and new panelled ceiling with recessed spotlights
Brushed gold towel radiator against marble-effect wall tiles

Planning an extension or renovation?

Call us
08 / Get a quote

Tell us about the project

Area
Croydon · New Malden · Mitcham · Streatham · South London
Hours
Mon to Sat, 8am to 6pm · Sun by arrangement
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