Easy-build DIY garden rooms, designed by you. Pick a size, choose your cladding and roof, decide where the doors go. The whole kit arrives on your drive, ready to build.
Every Pent Haus is made from ToughWood® composite, with aluminium-framed glazing, an insulated rubber roof and a 10 year structural warranty. Planning permission is rarely needed.
Start building yours
From £9,789
Pent Haus
Insulated Garden Rooms
Not sure where to start with your design?
We’ve put together a range of popular configurations.
4.8m x 3.2m - Cedar
Pent Haus Insulated Garden Room
Insulated SIPs Garden Room in Cedar including 1.8m French Doors with 300mm sidelights either side & 600mm full length window, EDPM rubber roof, Guttering & Downpipe, ToughWood cladding, 10-Year Manufacturer’s Warranty.
£15,405
Saving £1,000
4.8m x 3.2m - Granite
Pent Haus Insulated Garden Room
Insulated SIPs Garden Room in Granite with 1.8m French Doors and 1.2m (W) x 0.6m (H) window on the right-hand side, EDPM rubber roof, Guttering & Downpipe, ToughWood cladding, 10-Year Manufacturer’s Warranty.
£14,964
Saving £1,000
4.2m x 3.2m - Cedar
Pent Haus Insulated Garden Room
Insulated SIPs Garden Room in Cedar with 1.8m French Doors, EDPM rubber roof, Guttering & Downpipe, ToughWood cladding, 10-Year Manufacturer’s Warranty.
£13,275
Saving £1,000
4.2m x 3.2m - Granite
Pent Haus Insulated Garden Room
Insulated SIPs Garden Room in Granite including 1.8m French Doors and a 600mm full length window on the front elevation & 1.2m (W) x 0.6m (H) window on the right-hand side, EDPM rubber roof, Guttering & Downpipe, ToughWood cladding, 10-Year Manufacturer’s Warranty
£14,387
Saving £1,000
4.2m x 2.6m - Silver Birch
Pent Haus Insulated Garden Room
Insulated SIPs Garden Room in Silver Birch with 1.8m French Doors, EDPM rubber roof, Guttering & Downpipe, ToughWood cladding, 10-Year Manufacturer’s Warranty
£12,533
Saving £1,000
5.4m x 3.8m - Cedar
Pent Haus Insulated Garden Room
Insulated SIPs Garden Room in Cedar with 1.8m French Doors into garden room and a large panel door into storage area, plus large 1.2m (W) x 1m (H) Window on the right-hand side, EDPM rubber roof, Guttering & Downpipe, ToughWood cladding, 10-Year Manufacturer’s Warranty
£18,547
Saving £1,000
3m x 2.6m - Cedar
Pent Haus Insulated Garden Room
Insulated SIPs Garden Room in Cedar with 1.8m French Doors, EDPM rubber roof, Guttering & Downpipe, ToughWood cladding, 10-Year Manufacturer’s Warranty
£9,866
Saving £1,000
Signature SIPs™
Structural Insulated Panels
High-performance Structural Insulated Panels (SIPs), uses a modern construction method that offers outstanding insulation, strength, and durability.
This means your space stays comfortable year-round, with lower energy costs and minimal maintenance. SIPs also allow for a quicker, cleaner build - so you get lasting quality without the disruption. It’s a smart, future-proof choice that reflects our commitment to efficient, reliable craftsmanship.
- Solid timber frame construction
- Insulated floor, walls and roof
- Concealed CNC-cut wiring channels
- Usable all year round
- Factory-made panels
Cladding colours
Six ToughWood® colours
ToughWood® cladding is engineered wood, pressed into dense boards that hold their shape. It won’t warp or split like natural timber and never needs retreating. Pick from six colours, or ask about a custom shade.
* Custom colours are available on request.
Windows & doors
Windows and doors, exactly where you want them
Choose your windows and doors, including bi-fold options, and position them to suit your garden. Every door comes with high-security locks.
- Slimline UPVC and aluminium frames in anthracite
- Bi-fold door options
- Casement and picture window styles
- High-security locking as standard
Optional extras
Add-on packs
Add what you need in the configurator, from the foundations up.
Foundation Pack
from £450
Composite posts and a stainless steel frame. A level base with no wet concrete.
Electrical Pack
from £310
Four double sockets, spotlights, switch and all wiring, ready for your electrician to connect.
Internal Panel Pack
from £660
Tongue and groove wood panelling, pre-primed so it only needs a top coat in your colour.
Why Pent Haus
Why buy a Pent Haus
10 year structural warranty
The structure is guaranteed for ten years.
15 years’ experience
Pent Haus have been designing and building garden rooms for fifteen years.
Delivery & offload included
Professional delivery and offload are included in the price.
Planning permission rarely required
Pent Haus rooms are designed to fall within permitted development for most gardens.
Ready to design yours?
Make it yours using our Pent Haus configurator. Choose the size, doors, windows, cladding, roof and extras, and watch it take shape in the preview as you go.
Start building yours
From £9,789
Ready to order?
Buy with confidence
For over 30 years, we have guaranteed that our prices cannot be beaten, and that promise still stands today as one of our famous 7 Guarantees. Your happiness is vital to us, as now over 40% of our business comes from recommendations by satisfied customers - so we guarantee it!
Welcome to The Greenhouse People Ltd, we've been selling greenhouses and garden buildings since 1989 - many of the staff here have made greenhouses their life's work - and this means that we're here to help you with your choice with a wealth of experience and helpful impartial advice - you can call us seven days a week on 01782 385400.
Ordering online is easy - the checkout process is quick and easy, and if there are any queries or errors or changes needed, then it's no problem, simply call your nearest display site or email [email protected].
Ordering Online
The checkout process is quick and easy, and if there are any queries or errors or changes needed, then it's no problem, simply call your nearest display site or email [email protected].
Buy In Person
We have over 30 display sites across the UK where you can view our buildings and chat to our friendly sales team who will be happy to explain your options and help you place an order.
Talk to a Human
We are always available to talk via phone, email or in person at one of our show sites. Please do not hesitate to ask any questions you have, we love talking about our buildings!
Come and See
Fancy a coffee and a chat? Come visit your nearest display site and inspect your next garden building. We would love to help you find the perfect fit!
