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Extension Builder & Enclosed Porch Installers in Hertfordshire | The Home Extension Company

Extension Builder & Enclosed Porch Installers in Hertfordshire | The Home Extension Company

5.0(3 reviews)See reviews ↓·London

About the company

The Home Extension Company is a family-owned business with over 20 years of experience. It provides single and double-storey, rear, side-return and wraparound house extensions, and installs energy-efficient porches. It serves homeowners across Hertfordshire. Each project has a local manager overseeing it. It constructs highly insulated extensions and porches.

It offers extension design and planning services, and comprehensive project management coordinating every aspect of the build process. All projects are carried out in accordance with UK Building Regulations and related standards. Typical build time is 3 to 5 weeks. It offers a 10-year structural guarantee and a 25-year roof guarantee.

What customers say

Based on genuine customer reviews

Households planning rear and single-storey additions describe a straightforward journey from the early planning stage through to handover. A five-metre rear extension, a five-by-five metre build with a kitchen knocked through, and a project in Radlett were each delivered in roughly four to five weeks, a pace that surprised one client whose relatives work in construction and had anticipated several months at the minimum. Customers repeatedly mention the standard of the finished result, singling out the rendering to the rear of one property and the transformation the extra space brought to the home.

The tradesmen are described as hard-working and capable of keeping progress steady without disrupting the household. One family first commissioned the firm's sister operation for a garden room, was pleased with the outcome, and returned once they discovered extensions were offered. Quick delivery, careful workmanship and a trouble-free experience recur across the accounts, with one household engaging the team on more than one project, and the rendering carried out by Wayne stands out as a particular source of satisfaction.

Extension Builder & Enclosed Porch Installers in Hertfordshire | The Home Extension Company — Customer photo
Extension Builder & Enclosed Porch Installers in Hertfordshire | The Home Extension Company — Customer photo

Reviews

Reviews are taken from publicly available sources.

EM
E M6 August 2026

The builders have just finished my 5m x 5m house extension and knocking through my kitchen. The work went smoothly and the Wayne did a top job rendering the back of my house.

AM
Anthony Mills6 August 2026

I made contact with the Home Extension Company in February and we started the ball rolling with planning my house extension. I worked with their sister company for my garden room which went great, and when I heard they could do extensions I immediately showed interest. The extension took approximately 4-5 weeks to complete which shocked me as I have family in construction and they thought it would take 3-4 months at the minimum. The quality of the building is amazing, and their pricing is great in comparison to more traditional local builders. I've appreciated all of the efforts made and the hard work from their team. Paolo, Rob and Marian were fantastic and worked extremely hard to complete the job. Many thanks to the entire team.

EN
Eric Nolan4 August 2026

I had a great experience with The Home Extension Company when building my single storey extension in Radlett. They worked very hard to complete the work and finished my 5m rear extension in approximately 5 weeks. It has made a huge difference to my house and I was very happy with the service.

House extensions in London compared

Ordered by rating, weighted by the number of reviews — businesses with only a handful of reviews do not jump to the top automatically. 8 businesses in this category in London are compared.

RankProviderRatingReviewsOpen Sat.
1My Extension PM Limited★ 5,0100No
2The London House Extensions★ 5,026No
3QualityBuild Hackney House Extensions★ 5,023Yes
4Up-Great Ltd Builders I Refurbishment and Extensions★ 5,021Yes
5The Building Constructor House extension builders★ 5,07Yes
6Extension Builder & Enclosed Porch Installers in Hertfordshire | The Home Extension Company (this page)★ 5,03Yes
Contact
+441727224616www.thehomeextensionco.co.uk1 Crossoaks Farm, Borehamwood WD6 5PH
Working hours
Monday07:00–20:00
Tuesday07:00–20:00
Wednesday07:00–20:00
Thursday07:00–20:00
Friday07:00–20:00
Saturday10:00–16:00
Sunday10:00–16:00