★★★★☆★4.7 on Google from 10+ reviews
Extendia — builders in London
Extendia is listed for house extension and home extensions, based at International House, 109-111 Fulham Palace Rd in London, postcode W6 8JA. The office is open Monday to Friday from 08:00 to 20:00, and closed on Saturday and Sunday.
What Extendia does — and what it typically costs in London
Every job below can be priced from this page. The ranges are what London homes typically pay, from Locufy's price guides. Extendia confirms the exact figure in a written quote — asking is free, with no obligation.
Building & extensions
Kitchens, bathrooms & interiors
Roofs, walls & windows
Typical prices from Locufy's UK 2026 price guides — each guide explains what the job involves and what moves the price. Rendering and insulation installer are also offered, priced on survey.
About Extendia
Extendia is listed for house extension and home extensions, based at International House, 109-111 Fulham Palace Rd in London, postcode W6 8JA. The office is open Monday to Friday from 08:00 to 20:00, and closed on Saturday and Sunday.
You can ask for a written price on any building job from this page — an extension, a kitchen refit, a roof that leaks — and compare it with other London builders if you want to.
At a glance
- Trade
- Building and construction
- Based
- London
- Covers
- London and 15 km around
- 4.7 · 10+ reviews
- Hours
- Mon–Fri 8:00–20:00
- Quotes
- Written, free, no obligation
A written price, with no obligation
Describe the job
A line or two and a photo if you have one — it takes a minute.
Extendia prices it
Locufy passes it on; they come back to you with a written price.
Book, or compare
Happy? Book the date directly with them. Not sure? Compare quotes from other London builders.
How Extendia is rated
As published on Google, refreshed on each visit.
Read the reviews on Google →Reviews from Locufy bookings appear here
Every Locufy review comes from a job booked through Locufy, so each one is a real customer. Booked Extendia? You can leave the first one after the job.
Have a question before you book?
Do they handle planning? Are they on the voluntary construction register? Ask here — Locufy passes it to them and emails you their answer.
London and the towns around it
Based in London, Extendia works across the city and about 15 km around it.
- London
- Islington
- City of Westminster
- Croydon
- Harrow
- Hayes
- Wembley
- Fulham
- Southall
- Hounslow
Before you book
What does Extendia do?
Extendia offers house extension and home extensions work in London.
Where is Extendia located?
Extendia is at International House, 109-111 Fulham Palace Rd, London W6 8JA, so the postcode W6 8JA will get you to its door on Fulham Palace Road.
What are Extendia's opening hours?
Extendia is open Monday through Friday, 08:00-20:00. It is closed on Saturday and Sunday.
How can I contact Extendia?
You can ring Extendia by phone during its opening hours. No online booking is listed for Extendia.
Which other London firms offer house extensions nearby?
House Renovation London is 1.1 km away, Future Build London Ltd is 1.3 km away, and Design and Build London Renovation Ltd is 1.5 km from Extendia.
Get a written price from Extendia
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