The 10 extension builders from Google's results for Liverpool, ranked on Google rating, online presence and other factors. Updated 10 September 2026.
on GoogleLiverpool
Glass Ar Projects constructs house and kitchen extensions for homeowners across Liverpool and the Wirral. The team also completes bathroom renovations and loft conversions.
07855 100606 1 Seymour Rd, Liverpool L14 3LH
on GoogleLiverpool
LJP Builders constructs house extensions, loft conversions, garage conversions, and conservatories for homeowners in Liverpool. The building firm provides itemised project plans and schedules structural work using staged weekly payments rather than large upfront deposits.
07907 086912 236 Long Ln, Liverpool L9 6AQ
on GoogleIrlam Rd, Bootle
Allerton Windows constructs house and kitchen extensions for properties in Bootle and Liverpool. The company designs structural additions to expand ground-floor living space, integrating custom double glazing, doors, and roofing into every residential build.
0151 933 7360 Unit 1, Regent Works, Irlam Rd, Bootle L20 4EF
on GoogleLiverpool
MUSTARD Plans produces architectural drawings and planning applications for home extensions across Liverpool, the Wirral, Cheshire, and Lancashire. The firm offers design guidance, layout plans, and structural details to assist homeowners preparing building projects.
Liverpool
PJL Building Works in Liverpool constructs single and multi-storey house extensions. Their service covers every aspect of the project, taking residential builds from initial planning permission through to the final touches.
Liverpool
SR Building and Developments Ltd builds single-storey, double-storey, and side-return extensions in Liverpool. The team manages projects from start to finish to help homeowners add living space, home offices, or extra bedrooms.
Liverpool
House Extensions Liverpool builds energy-efficient SIPs home extensions across the city and the North West. Operating from a city centre office, the company handles planning requirements and manages full turn-key construction projects.
0151 832 5034 116 Duke St, Liverpool L1 5JW
Liverpool
Loft Conversion Architects in Derby produces architectural designs and planning applications for house extensions and loft conversions. The firm creates plans for properties ranging from period terraces to modern houses.
Liverpool
Home Extension Liverpool carries out residential extensions and property improvements across Liverpool and neighbouring areas. The firm assists homeowners with expanding their properties through custom building projects designed for extra living space.
Liverpool
Ta Developments constructs house extensions and carries out residential renovations in Liverpool, Wirral, and Caldy. The team works on building projects designed to add practical living space to existing properties.
07495 738204 105 Boundary St, Liverpool L5 9YJ
In Liverpool, single storey, per m² typically costs £1,600 – £2,300. Labour in Merseyside runs 9% below 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 liverpool". They are ranked on Google rating, online presence and other factors.
The figures above are Liverpool 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.