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Garden Rooms London

Garden Room London

Bespoke garden rooms, home offices and annexes designed and built by our team — insulated, wired and finished to a proper standard. Installations from 3 weeks. Homeowners and landlords across London within the M25.

🌿 A garden room adds usable space without a full extension — home office, gym, guest room or annexe. Book a free garden survey and we'll design something that fits your space.

  • Garden rooms, offices, gyms and guest annexes
  • Bespoke design, supply and build
  • Installations from 3 weeks on site
  • Insulated, electrics and finishes included

Book Your Free Quote Visit

Pick a date and time that suits you — we will send someone out to survey your property and provide a no-obligation quote.

Or call us: 020 4634 0020

3 Wks+

Typical Install

25+

Years Trading

Bespoke

Design & Build

Fully

Insured

Built to Last, Not Flat-Pack

Proper foundations, insulation, weatherproofing and electrics — built as a permanent garden building, not a thin summer house from a catalogue.

Designed Around Your Garden

We measure your space, discuss how you'll use the room, and design a building that fits the plot — offices, studios, gyms, guest rooms and granny annexes.

From 3 Weeks to Install

Once design and materials are agreed, many garden room builds complete on site from around 3 weeks — faster than a full extension.

Full Design & Build

One team handles base, structure, glazing, insulation, electrics, plastering and finishing. Trade-supply pricing on materials.

Our work

Bespoke Summer Houses & Annexes

Garden rooms, home offices and annexes designed and built in as little as three weeks — adding usable space without moving home.

Summer house or garden annex built by Focus Refurbishment in London

Why Cheap Garden Rooms Disappoint

Thin panels, no proper base, freezing in winter, boiling in summer, and electrics that wouldn't pass an inspection. Most budget garden rooms look fine in photos but don't work as year-round space.

  • No insulation or proper damp proofing
  • Flat-pack kits with no project management
  • Planning rules ignored — enforcement risk
  • No electrics or plumbing when you need a bathroom annexe

We build properly insulated, permitted garden buildings designed for how you'll actually use them — all year round.

Extra space at the bottom of your garden — without moving house.

Garden Buildings We Design & Build

Garden Offices

Quiet workspace at home

Garden Annexes

Guest space or granny flat

Garden Gyms & Studios

Exercise and hobby rooms

Summer Houses

Leisure and entertaining space

Bespoke Garden Rooms

Designed to your brief

Rooms with Bathrooms

En-suite garden annexes

Insulated Year-Round Builds

Not seasonal sheds

Planning Advice

Permitted development guidance

Simple Process. Fast Turnaround.

1

Garden Survey

We visit, measure the plot, check access and discuss how you want to use the building.

2

Design & Quote

Layout, spec and itemised quote — structure, insulation, glazing, electrics and finishing.

3

Build On Site

Foundations, frame, roof, insulation and interior fit-out. Most builds from around 3 weeks on site.

4

Handover

Electrics tested, snagging done, and your garden room ready to move into.

Trusted by Landlords, Homeowners & Property Managers

Garden office built in three weeks. Proper insulation — usable all year. Much cheaper than extending the house.

Homeowner

Sidcup

They designed an annexe for elderly parents with a small kitchenette. Professional build, not a flat-pack kit.

Homeowner

Kent

Clear quote, tidy site, and the room looks like part of the garden not an afterthought.

Google Review

★★★★★

Frequently Asked Questions

Want Extra Space in Your Garden?

  • Free garden survey — no obligation
  • Installations from 3 weeks
  • 25 years' experience, fully insured
Garden rooms London — Offices, annexes & summer houses — From 3 weeks — Free surveys