ATLAS
16 × 13 ft (5 × 4 m) · 20 m² · 2.48 m (8'2") high
£26,950 from, installed
A single-use room done properly — a home office with space to think, or a studio that finally has a door you can close.
Configure ATLAS
Garden Rooms · A room, not a shed
Garden rooms you'll use every day of the year.
A made-to-order, insulated garden room — built on the same engineered steel frame and 100mm PIR panels as our insulated garages, with a triple-glazed glass wall at the front. Professionally installed, without the cost, mess or months of a house extension.
Free to design · ~5 minutes · fixed price online — no site visit needed.What people use them for
A home office that isn't the kitchen table. A gym you'll actually walk to. A studio for art, music or yoga. A treatment room. A teenager's retreat. A garden lounge with the doors slid fully open in summer. One building, finished to a standard that adds to your home rather than sitting apart from it.
If you're searching for a garden office, this is that building: an insulated, triple-glazed garden room specified for full-time work — with flooring and concealed wiring in the Signature package, or a fully fitted, certified interior with Executive.
Planning to work from it every day? See our garden office packages and prices, or read the complete guide to a garden office. Weighing it against a conservatory? See garden room vs conservatory.
The range
Three sizes — ATLAS, NOVA, APEX
Fully installed, including VAT and delivery. Each model available in Core, Signature and Executive.
NOVA ★
16 × 16 ft (5 × 5 m) · 25 m² · 2.48 m (8'2") high
£31,950 from, installed
The size most people land on — a proper desk and somewhere to sit, or a full home gym you never have to pack away.
Configure NOVA
APEX
20 × 16 ft (6 × 5 m) · up to 30 m² · 2.48 m (8'2") high
£36,950 from, installed
Big enough for two things at once — a gym in one half and a lounge in the other, or space the whole family can spread out in.
Configure APEXEvery model is built to a 2.48 m (8′2″) external height — designed to sit below the 2.5 m permitted development height limit that applies close to a boundary in England & Wales. Planning rules vary by property and location — always check local requirements. Read our full planning guide →
Don't see your preferred size or configuration? Ask us about a custom quote — tell us what you need and we'll see what's possible.
What it costs
Garden room prices, with nothing hidden
A VeltHaven garden room costs from £26,950 fully installed — including VAT and delivery — around £1,230–£1,350 per square metre for a year-round, insulated, triple-glazed building. The base and any extra electrical connection are quoted separately, from your site photos, before you commit.
Want the full breakdown — what drives the price and how it compares to a kit or an extension? Read our garden room cost guide.
Torn between a new garden room and converting your garage? Read the garden room vs garage conversion comparison.
Wondering whether it pays you back? Read does a garden room add value to your home.
Free to design · ~5 minutes · fixed price online — no site visit needed.What makes it a room, not a shed
The glazed front
The full front is a four-panel sliding glass wall — two fixed panes and two that slide open — so the garden comes inside when you want it and the light never stops. Large windows on each side keep the space bright from every angle. Slim anthracite frames throughout, glazed to a premium thermal standard so the room stays comfortable in deep winter and high summer alike.
See it from every angle
Inside and out
The same insulated, glazed room works as an office, a gym or a retreat. Here is how it looks inside, and from the garden.
See more finished buildings in our installations gallery.
How it's built
Built on a steel frame, clad in insulated PIR panels
Behind the glazed front, an engineered steel frame carries solid walls in 100mm PIR sandwich panels and a roof in a separate, fire-rated 100mm PIR panel with a trapezoidal profile — two steel skins bonded to a rigid PIR foam core, locked together with a concealed tongue-and-groove joint. It is the same insulated steel build as our insulated garages, sharing the same wall and roof panel system — and because it bolts together rather than being built in place, it can be dismantled and moved if you ever relocate. Wall U-value 0.23 W/m²K · roof U-value 0.22 W/m²K.
Wondering how it holds up in January? Read our guide to garden room insulation in winter.
Worried about damp or condensation? Read our guide to garden room condensation.
And how long will it last? Read our guide to how long a garden room lasts.
Wall panels
| Insulation core | Rigid polyisocyanurate (PIR) foam |
|---|---|
| Thermal conductivity | λ = 0.022 W/m·K |
| Standard panel thickness | 100mm |
| U-value (100mm) | 0.23 W/m²K |
| Fire reaction | B-s1, d0 |
| Fire resistance (100mm) | EI 15 |
| Fire propagation | NRO (non-fire-propagating) |
| Certification | EN 14509, CE-marked |
Roof panels
| Insulation core | Rigid polyisocyanurate (PIR) foam |
|---|---|
| Thermal conductivity | λ = 0.022 W/m·K |
| Standard roof thickness | 100mm |
| U-value (100mm) | 0.22 W/m²K |
| External roof profile | Trapezoidal |
| Fire reaction | B-s1, d0 |
| Fire resistance (100mm) | REI 30 / RE 120 |
| External fire action | BROOF (fire-resistant roofing) |
| Certification | EN 14509, CE-marked |
The Core specification
Every room starts with the Core shell
Core is an insulated, glazed shell — ready for your fit-out. The floor, power, lighting and heating that make it move-in ready come with Signature and Executive, in the ladder below.
- Insulated steel structure — 100mm PIR walls and a fire-rated 100mm PIR roof for genuine year-round comfort
- Single flat mono-pitch roof with a gentle fall to the rear — gutters and downpipes included
- Triple-glazed four-panel sliding glass wall — two sliding, two fixed — anthracite frames
- Two triple-glazed windows — one each side
- Your choice of exterior colour from the 10-colour RAL palette — anthracite RAL 7016 as standard
- Delivery, installation & VAT — all included. VeltHaven 10-Year Structural Warranty (2 years full warranty + structural cover to year 10). Does not affect your statutory rights.
The Floor Finish — included with Signature and Executive
Premium oak-effect luxury vinyl
Premium oak-effect luxury vinyl planks with a fully waterproof rigid mineral core, integrated acoustic underlay and commercial-grade 0.55 mm wear layer — professionally fitted during your build. Included with Signature and Executive.
Natural Oak is fitted as standard. Light Grey and Smoked Oak shown are visualisations of further decors we can fit — we confirm the exact decor against a physical sample before installation.
Glazing & doors
Precision glazing, built for the British climate
The full front is a triple-glazed sliding glass wall on a 76 mm 6-chamber insulated frame with a warm-edge spacer — a whole-window U-value (Uw) of 0.76 W/m²K. Two sliding panes, two fixed, and a triple-glazed window on each side: engineered to hold a comfortable temperature through a British winter, and CE-marked to the relevant EN standards.
| Frame | 76 mm 6-chamber insulated profile |
|---|---|
| Whole-window U-value (Uw) | 0.76 W/m²K (triple-glazed sliding wall) |
| Glazing | Triple-glazed sealed units with a warm-edge spacer |
| Sliding wall | Four panes — two sliding, two fixed |
| Windows | One triple-glazed window each side (2.0 m × 1.0 m) |
| Glass options | Solar-control, acoustic and anti-intrusion (laminated) glass available |
| Finish | Full RAL colour range inside and out — anthracite as standard |
| Certification | CE-marked to the relevant EN standards |
Solar (g-) values are confirmed for the glazing specified on your build. Anti-intrusion laminated glass is available as an option.
Specification ladder
Three levels of finish
Every garden room shares the same insulated, triple-glazed structure — you choose how finished it arrives. Each level builds on the one before: Core is a shell to fit out, Signature is move-in ready, and Executive is fully turnkey for year-round use.
Core
The complete insulated building — factory-finished inside and out, weathertight and ready to use. You arrange your own electrics and flooring, in your own time.
Includes
- 100mm PIR insulated walls & roof
- Triple-glazed sliding glass wall + two windows
- Gutters, downpipes & your choice of RAL colour
- Delivery, installation & VAT
- VeltHaven 10-Year Structural Warranty
Best for buyers happy to arrange their own electrics and fit-out.
Recommended
Signature
Everything in Core, plus premium vinyl flooring and all concealed wiring, professionally installed and tested — ready for your electrician to fit the sockets, switches and lights you choose.
Everything in Core, plus
- Premium oak-effect luxury vinyl floor, fitted
- Complete electrical first fix — concealed wiring, consumer unit, first-fix tested
- Wiring prepared for lighting, sockets and a future heating & cooling system
Best for most people — the hidden work done, the visible choices yours.
Executive
Fully finished and commissioned — everything in Signature, plus the complete second-fix installation, tested and certified. Move in the day we hand over.
Everything in Signature, plus
- Complete second fix — LED lighting, USB power sockets, switches, tested & certified
- Daikin heating & cooling (heat pump, app control)
- Wired CAT6 networking, smoke & heat detectors
Best for turnkey, year-round use — nothing left to arrange.
Climate Comfort Collection
Year-round comfort, controlled from your phone
A premium 5 kW Daikin heat-pump system: efficient heating in winter, refreshing cooling in summer. Internal wall unit and external condenser, smart WiFi and app control, professionally installed and commissioned — ready from day one.
- Energy-efficient Daikin heat-pump technology · programmable scheduling
- Professional installation, commissioning and handover demonstration
- Included with the Executive package — installed, tested and commissioned before handover.
About planning
Whether a garden room needs planning permission depends on its size, where it sits in your garden, and how you'll use it. In England and Wales it is normally permitted development if it is single-storey, no more than 2.5 m to the eaves, not forward of your house's principal elevation, and no more than 3 m tall overall for a flat or mono-pitch roof — dropping to 2.5 m overall where it sits within 2 m of a boundary. Permission is more likely to be needed in a conservation area or on a listed building, or if previous extensions have already used up your permitted development allowance. Rules differ in Scotland and Northern Ireland, and permitted development does not apply to flats or maisonettes. We assess yours as part of the design and tell you clearly what's required before you commit — and if you're unsure, your local planning authority can confirm. Read our planning guide →
What's included / what's separate
Included: the finished, insulated, glazed and powered building, delivery, installation, VAT, and the structural warranty. Quoted separately after your site photos: the level base/groundwork it sits on, and any additional electrical connection work — always confirmed before you commit.
Our recommendation
The room we'd build
Recommended configuration
NOVA Signature — move-in ready
Our most-recommended room: generously sized at 25 m², finished and working from day one — floor, power, lighting and interior finish all included.
| NOVA Signature (16 × 16 ft / 5 × 5 m) — inc. VAT, delivery & install | £38,450 |
|---|
Want heating and cooling for year-round use? NOVA Executive is £44,950, with Climate Comfort and premium finishes included.
Start from this configuration Adjust anything in the configurator — estimated price updates live.VeltHaven 10-Year Structural Warranty (2 years full warranty + structural cover to year 10). Does not affect your statutory rights.
The VeltHaven Price Guide
Real 2026 prices for our steel & insulated garages and garden rooms — plus the planning rules, groundwork and electrics explained. One free guide, by email.
Common questions
Garden Rooms FAQ
What's included in the price of a garden room?
The finished, insulated, glazed building, delivery, installation, VAT, and the VeltHaven 10-Year Structural Warranty are all included, from £26,950. The level base/groundwork it sits on, and any additional electrical connection work, are quoted separately from your site photos and always confirmed before you commit.
How long does it take from order to finished room?
Your building is manufactured to order in about 2–6 weeks, then delivered and installed — usually in a single day once your base is ready, and managed end to end by VeltHaven.
Do I need planning permission for a garden room?
Usually not. In England and Wales a garden room is normally permitted development if it is single-storey, no more than 2.5 m to the eaves, not forward of your house's principal elevation, and no more than 3 m tall overall for a flat or mono-pitch roof — dropping to 2.5 m overall where it sits within 2 m of a boundary. Permission is more likely to be needed in a conservation area or on a listed building, or if previous extensions have already used up your permitted development allowance. Rules differ in Scotland and Northern Ireland, and permitted development does not apply to flats or maisonettes. We assess your plot as part of the design and tell you clearly what's required before you commit — and if you're unsure, your local planning authority can confirm. Read our full planning guide →
Do I need to prepare a base before installation?
Yes — your room needs a level base/groundwork suited to the building. This is quoted separately from your site photos, after your design is finalised, and always confirmed before you commit.
What warranty is included?
Every garden room includes the VeltHaven 10-Year Structural Warranty: 2 years full warranty covering all parts and workmanship, plus structural cover extending to year 10. This does not affect your statutory rights.
What colour options are available?
Your choice of exterior colour from the 10-colour RAL palette, with anthracite RAL 7016 as standard.
Explore the range
Your space. Your way.
Need warm, secure vehicle space rather than a room? See the Garage Systems.
Free to design · ~5 minutes · no site visit needed.
From £26,950
installed, inc. VAT
Get a price