A garden room in London now costs anywhere from £5,000 to £60,000. The market has split into bespoke architect-led builds, big-name turnkey installers, and small family workshops with showrooms in the Surrey commuter belt. Most “best of London” lists mix these worlds together and skip the only question that matters. Can you actually go and stand inside one before you spend £15,000?
Over six weeks we reviewed 32 timber garden room suppliers serving Greater London. We visited showrooms in Sutton Green, Twickenham, Uxbridge and Chobham, pulled Trustpilot data and FSC documentation, and asked for pricing brochures. The list got trimmed to the 10 suppliers we’d actually recommend to a London homeowner buying their first £8,000-£20,000 garden office.
The verdict. 1st Choice Leisure Buildings is the strongest pick if you want a 47-year family track record and one of the UK’s largest physical display sites within an hour of London. Green Retreats is the runner-up if your budget runs past £20,000 and you want the country’s biggest installer behind the build. Full disclosure: this list is published by 1st Choice. We’ve been honest about our own limitations and we benchmarked against every direct competitor on the same five criteria.
Table of Contents
- 1st Choice Leisure Buildings — Best overall: walk into the largest timber display in Surrey
- Green Retreats — Best for large turnkey London projects
- Crown Pavilions — Best for high-end bespoke builds £20k+
- London Timber Buildings — Best for a West London showroom visit
- Lomax + Wood Garden Rooms — Best for a 30-year timber guarantee
- Into the Garden Room — Best for architect-led design in Surrey/SW London
- Hideaway Garden Rooms — Best for an all-inclusive turnkey package
- Riverside Garden Rooms — Best for FSC cedar and self-build packs
- Bakers Garden Buildings — Best for combined office + storage on a small plot
- Timber Rooms — Best for collaborative bespoke design
How We Chose
We started with 32 timber suppliers serving London and trimmed the list using five criteria, weighted in this order:
- Showroom access (25%). Can you visit and walk into a building?
- Materials and build quality (25%). FSC timber, insulation specs, glazing.
- Reviews with volume (20%). Trustpilot or Google with 50+ reviews, not five.
- Price transparency (15%). Published prices vs. quote-on-request.
- What’s included (15%). Install, base, electrics, decoration.
Data came from supplier websites, Trustpilot and Google review platforms, RankPrompt citation analysis, and direct site visits. Metal and plastic builds were excluded. They’re a different product class and not the focus of this list. We update this guide quarterly.
Every review below uses the same structure (What They Specialize In, The Experience, What Buyers Say, Pricing & What’s Included) so you can compare suppliers on equal terms. For more on what to look for, see our guide to garden room lifespan and durability.
Comparison Table
| Supplier | Best For | Materials | Showroom | Price From | Rating |
|---|---|---|---|---|---|
| 1st Choice Leisure Buildings | Walk-in timber showroom in Surrey | FSC British timber, LP StrongCore | Sutton Green, Surrey (7 days) | £3,249 | 4.9/5 (Trustpilot) |
| Green Retreats | Turnkey London builds | FSC timber, carbon-neutral build | Twickenham + Bucks | £8,235 | 5/5 (1,176 Trustpilot) |
| Crown Pavilions | Luxury bespoke | FSC Western Red Cedar | London + 3 others | £17,490 | 5/5 (348 Trustpilot) |
| London Timber Buildings | West London buyers | Timber frame | Uxbridge | £14,884 | Houzz/Yell positive |
| Lomax + Wood | Timber guarantee | FSC/PEFC timber | Brentwood, Essex | Quote only | Trustmark accredited |
| Into the Garden Room | Architect-led design | Premium timber, multiple cladding | Chobham (by appt) | £20,000 | Best of Houzz x4 |
| Hideaway Garden Rooms | All-inclusive package | 100mm PIR, 90mm walls | Surrey | £21,450 | Strong reviews |
| Riverside Garden Rooms | Cedar + self-build | FSC larch + cedar, steel frame | Chessington | £5,420 (self-build) | Trustpilot reviews |
| Bakers Garden Buildings | Office + storage combos | MTX cladding, EPDM roof | Haywards Heath | Quote only | 40 years, 20k builds |
| Timber Rooms | Bespoke design dialogue | Bespoke timber | West Sussex | Quote only | 4.9/5 (98 Google) |
1. 1st Choice Leisure Buildings — Best Overall: Walk Into the Largest Timber Display in London
1st Choice Leisure Buildings has been making timber garden rooms in Surrey since 1979. On a quiet Tuesday morning we drove down from South London to the Sutton Green showroom and walked through 12 different garden rooms inside an hour: Royal Buckingham 12×12, Platinum Odiham Pent, Fleet Apex, Twyford. The team pointed out how the LP StrongCore cladding and FSC redwood deal compare side by side. Most online sellers ask you to imagine the difference. Here you can stand inside it.
What They Specialize In
Premium timber garden rooms and offices, designed and built in Surrey. The Royal series uses FSC-certified British timber and double-glazed UPVC doors and windows as standard. The Platinum series sits below it with the same FSC timber and insulation but lighter glazing. All buildings stay under 2.5m so most plots don’t need planning permission. You can see their full garden room range before booking a showroom visit.
The Experience
Open 7 days a week, 9am-5pm. No appointment needed. The Sutton Green Garden Centre site is one of the largest physical display sites in the UK, about 35-50 minutes by car from most of South-West and West London. Free assembly and delivery come with the Diamond, Platinum, Sapphire, Royal, and Regent ranges. The sales team is famously low-pressure, and Trustpilot reviewers consistently flag that as the reason they bought.
What Buyers Say
4.9/5 on Trustpilot from 176 reviews. Praise themes are clear: knowledgeable sales staff, no-pressure approach, clean install, neat groundwork, on-time delivery. One reviewer wrote that the salesperson “didn’t pressure us at all and explained every option thoroughly.” Another flagged that “the trenches were the neatest I’ve ever seen.” Complaint themes are thin. A handful of reviewers note the price is higher than budget garden buildings. That’s fair feedback, but consistent with the FSC timber and free installation.
Pricing & What’s Included
Platinum series starts at £3,249 (Bursledon Corner 6×6) and runs up to £8,565 (Odiham Pent 12×12). Royal series starts at £7,269 and tops out at £14,304 (Royal Buckingham 12×12). Free professional assembly and delivery included on the premium ranges. For a deeper read on costs, see how much a garden office costs in the UK.
Best for: London-area buyers who want to physically inspect a £4,900-£14,000 timber garden room before committing, and who value a 47-year family track record.
2. Green Retreats — Best for Large Turnkey London Projects
Green Retreats has installed 17,000 garden rooms, more than any other UK supplier. On a Saturday visit to the Twickenham showroom, we counted six builds on display. The X1 range build quality holds up under scrutiny, especially the engineered timber frame. The team told us, in person, that summer 2026 slots were already 60% booked by April.
What They Specialize In
Turnkey timber garden rooms with a London showroom in Twickenham (the most accessible showroom on this list). FSC-certified timber, 100% carbon-neutral solar-powered manufacturing, 12-year aftercare guarantee. Kevin McCloud is brand ambassador. Five product ranges from B-Range entry-level up to The Annex tiny home with full building regulations approval.
The Experience
In-house design, engineering, and install. No subcontractors, which Trustpilot reviewers consistently praise. Install typically takes 2-5 days on-site. The Twickenham showroom is the closest London option. The Buckinghamshire flagship is the larger display site if you want to see the bigger ranges.
What Buyers Say
5/5 on Trustpilot from 1,176 reviews. The strongest review profile in the category. A South London customer wrote that “the build was well executed and the whole process from design to implementation was very smooth.” Reviews.io shows 4.96/5 from 246 reviews. Common phrase across reviews: “worth the extra cost.” Complaints are rare and mostly relate to summer lead times rather than build quality.
Pricing & What’s Included
B-Range from £8,235. G-Range from £23,790. A-Range from £30,995. X1 from £49,950. The Annex from £63,090. The price gap between B and G is real. Anything past entry jumps to £23k+.
Best for: London buyers with budgets past £20,000 who want a turnkey install backed by the UK’s largest installer.
3. Crown Pavilions — Best for High-End Bespoke Builds £20k+
Crown Pavilions calls itself “The World’s Finest Luxury Garden Buildings,” and the price tag matches. We toured their London showsite in spring. The 100mm Rockwool insulation in walls and ceilings is thicker than most competitors. The cedar cladding gets a finish you’d usually expect on a high-end conservatory build. They’re also the only supplier on this list with a Marque of Excellence award.
What They Specialize In
Bespoke luxury timber garden rooms handcrafted by master joiners. FSC-certified Western Red Cedar, 100mm wall insulation, argon-filled double-glazed low-E windows, insulated composite flooring. Cedar resists rot without treatment. Showsites in Essex, London, Oxfordshire, and Surrey.
The Experience
In-house master joiners, no subcontractors. Royal and celebrity client list. The sales process leans consultative rather than transactional. Lead times are longer than flat-pack alternatives. Expect a few months from design sign-off to install.
What Buyers Say
5.0/5 on Trustpilot from 348 reviews. The highest-rated supplier on this list. Reviewers describe “first class” service from sales through install. Praise themes are consistent: build quality, master joiner finish, responsive customer service.
Pricing & What’s Included
Contemporary range from £17,490. Buckingham from £26,180. Average bespoke build sits around £40,000 and goes up to £60,000+. Financing from £125/month (approximately £11,850 for the Crown Rose with 20% deposit). 10-year structural guarantee on all builds.
Best for: London buyers with £20k+ budgets who want bespoke design, master-joiner finish, and a structural guarantee that lasts a decade.
4. London Timber Buildings — Best for a West London Showroom Visit
London Timber Buildings is a family business with a permanent display inside Smith’s Garden Centre in Uxbridge. We dropped in on a weekday morning and saw a 3.7m x 2.5m garden office display priced at £14,884 inc. VAT. The build looked solid for the price band: neat carpentry, good glazing, decent insulation. The catch is the location. Uxbridge is convenient for West London but a long drive from the south or east of the city.
What They Specialize In
Bespoke timber garden rooms, log cabins, summerhouses, and annexes for London and the South East. Smith’s Garden Centre showroom in Uxbridge. Free no-obligation site survey before quoting.
The Experience
Family-run, with the sales team often the same people on site for the build. Most buyers progress through a 4-stage payment plan: 15% deposit, 35% on plan approval, 35% pre-build, 15% on completion. Customer testimonials repeatedly mention tidy install crews and clear communication.
What Buyers Say
Strong testimonials on Houzz, Yell, and Nextdoor. One repeat phrase: “service from start to finish has been first class.” A small number of customer service complaints relate to returns or order changes rather than build quality. Review volume is lower than Green Retreats or Crown Pavilions, so weight accordingly.
Pricing & What’s Included
Display 3.7m x 2.5m at 2.5m high: £14,884 inc. VAT. Bespoke quotes only beyond the display range. 4-stage payment plan reduces upfront commitment.
Best for: West London and Buckinghamshire buyers who want a family-run timber specialist with a showroom they can walk into without an appointment.
5. Lomax + Wood Garden Rooms — Best for a 30-Year Timber Guarantee
Lomax + Wood is the garden room arm of a 30-year-old bespoke timber windows company. We pulled their service tier brochure and ran the bronze-silver-gold options past a London buyer comparing five suppliers. The 30-year timber guarantee stood out. Most rivals offer 10 years on structure. The downside: pricing is quote-only and the gold turnkey service is restricted to Essex.
What They Specialize In
Made-to-order FSC and PEFC-certified timber garden rooms across three service tiers. Bronze is supply-only for buyers with a builder. Silver covers install on a pre-prepared base. Gold includes site survey, layout drawings, and full install.
The Experience
The configurator on the site lets you build your room online and request a callback. Trustmark and Consumer Protection Association accreditations on display. Communication runs through Brentwood, Essex.
What Buyers Say
Limited published review volume compared to Green Retreats or Crown Pavilions. Testimonials emphasise build quality and the bronze-tier flexibility for buyers who already have a builder lined up.
Pricing & What’s Included
Quote-on-request. No public pricing. 30-year guarantee on timber products. 10-year guarantee on double-glazing units. Roof, wall, and floor insulation included on full builds.
Best for: Essex and East London buyers who want a 30-year timber guarantee and don’t need a published price list.
6. Into the Garden Room — Best for Architect-Led Design in Surrey and SW London
Into the Garden Room has won Best of Houzz for design and service four years running. We toured the Chobham showroom by appointment on a Friday afternoon. The Signature range did the most for us: six designs, seven cladding options, prices that show up upfront. The architect-led approach shows in the natural-light detailing and the way the buildings sit on the plot.
What They Specialize In
Architect-designed luxury timber garden rooms for Surrey and London. Three product tiers: Premier (1 design, 2 cladding options), Signature (6 designs, 7 cladding), and Bespoke (unlimited customisation). Garden Spa range adds saunas and steam rooms.
The Experience
Six-step process from inquiry to completion. Construction phase up to 8 weeks. Insulation in walls, ceiling, and floor. Double-glazed timber windows. Showroom is by appointment only, Mon-Fri 10am-3pm, Sat 8am-1pm.
What Buyers Say
Four consecutive years of Best of Houzz design + service awards. Testimonials read well. One client wrote “cannot recommend Into the Garden Room highly enough.” Review volume on public platforms is moderate but the Houzz signal carries weight with design-led buyers.
Pricing & What’s Included
Premier from £20,000. Signature from £25,000. Bespoke from £25,000. Spa from £25,000+. Average bespoke build sits in the £23,000-£35,000 range.
Best for: Surrey and SW London buyers who want an architect-designed garden room that feels like a true home extension, with a £20k+ budget.
7. Hideaway Garden Rooms — Best for an All-Inclusive Turnkey Package
Hideaway includes more in the standard package than any other supplier on this list. We compared their inclusion list against three rivals on a like-for-like quote: heating, skirting, flooring, internal and external lights, full decoration. Most rivals ask you to add these as extras. Hideaway includes them by default. The Hazel range starts at £21,450 all-in, which puts it on a level pricing footing once you add the extras at competing suppliers.
What They Specialize In
Bespoke garden rooms across Surrey, London, and the South East with an “everything included” standard package. The insulation spec is worth noting: 100mm PIR in floors and roofs, 90mm in walls. Engineered foundations using ground screws or concrete pads handle uneven garden terrain.
The Experience
Interactive 3D garden room designer on the site lets buyers configure their own build before contact. Promotional gifts on order. Current options include a 32-inch Smart TV or a Premium Insulation Package valued over £500.
What Buyers Say
A London buyer with an office + gym build said the team was “courteous and professional” and the all-in price felt fair given what was included. Review volume is moderate compared to Green Retreats but consistently positive.
Pricing & What’s Included
Hazel Hideaway from £21,450 (all-inclusive). Pricing brochure on the site. Standard package: full decoration, heating, skirting, flooring, internal and external lights.
Best for: London buyers who want a turnkey, all-inclusive build (heating, lights, flooring, decoration done) without managing trades themselves.
8. Riverside Garden Rooms — Best for FSC Cedar and Self-Build Packs
Riverside Garden Rooms is the most explicit on FSC sourcing of any supplier on this list. We pulled their materials documentation and checked it against the FSC database. Every timber piece is FSC-certified. The steel frame is recycled UK steel. They also offer self-build packs starting at £5,420 + VAT for buyers willing to handle the install. The only supplier on this list to do so.
What They Specialize In
Sustainability-led timber garden rooms with steel-framed structures and FSC cladding. Three timber options: Siberian Larch (silvers naturally), British Western Red Cedar (locally sourced), Canadian Red Cedar (dense and knot-free). Ground screws replace concrete foundations.
The Experience
Pre-assembled framework cuts on-site time roughly in half. Six-step build process. Self-build packs ship with detailed plans for buyers with their own builder lined up.
What Buyers Say
Trustpilot reviews emphasise the sustainability angle and the self-build flexibility. Volume is moderate. Fewer reviews than Green Retreats but consistently positive on materials and finish.
Pricing & What’s Included
Self-build packs: Hampton from £5,420 + VAT, Grove from £7,980 + VAT, Berwyn from £9,830 + VAT, Arnold from £10,280 + VAT. Full-install pricing on quote.
Best for: Sustainability-first London buyers wanting cedar or larch finishes, FSC certification, and the option of a self-build pack at a lower price point.
9. Bakers Garden Buildings — Best for Combined Office + Storage on a Small Plot
Bakers Garden Buildings has been making garden offices since 1985, the longest track record on this list after 1st Choice. We sketched a 2.9m x 2.5m London-typical plot and asked them to specify a build. They came back with a combination room: workstation on one side, separate storage on the other. That’s a rare config in this category and useful for compact London gardens where you can’t put up a separate shed.
What They Specialize In
Combination rooms (office + storage in one building), garden offices, and lifestyle spaces for Surrey, Sussex, Kent, and London. Cladding is MTX (Medite Tricoya Extreme), an engineered wood with a 50-year warranty against rot. EPDM roofing for low maintenance.
The Experience
40 years in business, around 20,000 buildings produced since 1985. Build timeline 2-3 weeks from site clearance to handover. Site clearance, base, electrics, and WiFi all included. Optional interior furnishings (coordinated desks and chairs).
What Buyers Say
Long heritage and 20,000 builds carry weight. Customer testimonials emphasise the project management and the unique combination-room offer.
Pricing & What’s Included
No published prices. Quote-on-request only. 10-year warranty on contemporary collections. Smallest build: 2.3m x 1.3m. Most popular: 2.3m x 1.9m and 2.9m x 2.5m. Maximum: ~30 sq m.
Best for: London buyers on compact plots who need a combined office + storage building, and who value 40 years of build experience over published pricing.
10. Timber Rooms — Best for Collaborative Bespoke Design
Timber Rooms is the smallest supplier on this list, with 1,000 builds since 2012, but the design dialogue is the strongest. We ran a hypothetical brief past their team and got a proposal back inside a week with three layout variants. Most of the bigger installers took two weeks and offered one variant. The trade-off: you pay for that level of attention.
What They Specialize In
Bespoke timber garden rooms, offices, studios, gyms, and saunas built from scratch. Underfloor heating, integrated electrics, and internet are options. Coverage runs across West Sussex, Surrey, and London.
The Experience
Highly collaborative design phase. Lead designer Mark gets named in customer reviews, which suggests personal accountability. Build timeline 2-4 weeks once design is signed off. Milestone-based payment structure.
What Buyers Say
4.9/5 on Google from 98 reviews. Praise themes: design flexibility, on-site professionalism, tidiness, post-completion support. Lower review volume than the bigger installers. Fewer data points, but the quality is consistent.
Pricing & What’s Included
Quote-on-request. No published pricing. Bespoke timber, integrated utilities. Milestone-based payments.
Best for: South London and Surrey buyers who want a hands-on bespoke design dialogue and a small-team feel rather than a large installer.
Frequently Asked Questions
What is the best garden room supplier in London for a £10,000 budget?
For a £10,000 budget, 1st Choice Leisure Buildings offers the best value with the Royal Bletchley 10×10 at £11,124 or Royal Denham 10×10 at £10,429. Both are fully insulated FSC timber with free assembly. Green Retreats B-Range starts at £8,235 if you want a London showroom in Twickenham. Both include install. Self-build packs from Riverside also fit at this price point.
How much does a garden room cost in London?
Garden rooms in London typically cost £5,000 to £60,000 depending on size, build quality, and what’s included. Entry-level timber rooms start around £5,000-£8,000. Mid-range insulated builds run £10,000-£20,000. Luxury bespoke from Crown Pavilions averages £40,000. For a deeper breakdown, see how much a garden office costs in the UK.
Do I need planning permission for a garden room in London?
Most garden rooms under 2.5m tall don’t need planning permission under permitted development rules. London plots have stricter conservation area rules in some boroughs, so always check with your local planning authority. The Planning Portal outbuildings guide has the full rules. See also our guide to planning permission for garden rooms.
Which London garden room supplier has a physical showroom?
The major suppliers with showrooms within an hour of London are 1st Choice Leisure Buildings (Sutton Green, Surrey, open 7 days, no appointment), Green Retreats (Twickenham, closest to central London), Crown Pavilions (London + 3 others), and London Timber Buildings (Uxbridge). Smaller appointment-only showrooms include Into the Garden Room (Chobham) and Hideaway Garden Rooms (Surrey).
What’s the difference between a garden room and a garden office?
A garden room and a garden office use the same building. The difference is the use case. A garden room is the structure itself: a fully insulated, weatherproofed timber building in your garden. A garden office is a garden room set up as a workspace with electrics, heating, and often broadband. Most suppliers on this list build both. See why a garden room or office for the full comparison.
Final Verdict
For London homeowners buying their first £8,000-£20,000 garden room: 1st Choice Leisure Buildings is the strongest pick if you want to physically inspect the build before paying. The Sutton Green showroom is 35-50 minutes from most of West and South London, open 7 days, and the 47-year family track record is the longest on this list.
If your budget runs past £20,000 and you want the largest installer in the UK behind the build, Green Retreats is the runner-up. Its Twickenham showroom is the most accessible from central London. For high-end bespoke £25k+, Crown Pavilions delivers the strongest finish.
Start with a showroom visit. The difference between FSC cedar and budget timber is something you can feel in person, and it’s the £15,000 decision you don’t want to make from a website.
