The 10 extension builders from Google's results for Croydon, ranked on Google rating, online presence and other factors. Updated 10 September 2026.
on GoogleBromley
Residential extension and refurbishment projects are undertaken by JNJ Building Solutions, serving clients in Bromley and South Croydon. Recent work includes expanding and updating living spaces to accommodate growing families.
020 3633 8632 21-23 Elmfield Rd, Bromley BR1 1TF
on GoogleCroydon
SimplyEasy Refurbs builds dormer loft conversions and home extensions across Wandsworth and broader London areas. Its construction projects focus on increasing usable living area and natural light through custom roof transformations.
020 3648 9687 Airport House, 265 Purley Way, Croydon CR0 0XS
on 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
on GoogleCroydon
Lct Builders designs and constructs house extensions throughout Croydon, South London, and surrounding areas. The team delivers fully managed projects including kitchen extensions and open-plan living room conversions.
on GoogleCroydon
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.
Croydon
Construction and hard landscaping services are provided by Davidrutland across South London, Bromley, and Croydon. The company handles house extensions as well as outdoor spatial improvements and garden layout changes.
Croydon
House Extensions Croydon designs and builds house extensions in Croydon, taking on both small and large projects. The team draws up plans around what each client asks for and offers building advice throughout, adding extra living space to the property.
Croydon
Single, two, and three-storey home extensions are constructed by Home Extensions Brixton across Croydon and London. The firm also handles plumbing adaptations, electrical circuit expansions, and conservatory installations.
Croydon
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.
Croydon
Elite Builders London carries out property extensions, new builds, and conversions for domestic clients in Croydon and the surrounding areas. Its workforce handles home renovations, basement alterations, loft conversions, and general property maintenance across Greater London.
In Croydon, single storey, per m² typically costs £2,100 – £3,000. Labour in Greater London runs 18% above the UK median, which accounts for most of the difference from the same job elsewhere.
These are the firms from Google's results for "house extensions croydon". They are ranked on Google rating, online presence and other factors.
The figures above are Croydon ranges. These explain what drives them, so you can read a quote properly.
Per-square-metre prices for single-storey, two-storey, side return and kitchen extensions, costs by size, the fees outside the build price, and planning limits by nation.
The permitted development limits for extensions, lofts, porches and outbuildings in England, where the rights do not apply, what prior approval and a certificate cost, and how Wales, Scotland and NI differ.
When the Party Wall Act applies, which notice to serve and how far ahead, what your neighbour can do, what a surveyor's award costs, and the rules in Scotland and NI.
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.
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.