Portsmouth, Hampshire
Garden Rooms in Portsmouth
From Southsea's tight terraced gardens to the larger plots at Drayton and Portchester, we supply insulated Pent Haus garden rooms across Portsmouth and Portsea Island. Every kit is engineered for year-round use, with maintenance-free cladding that stands up to salt air and coastal weather.
Portsmouth is about 20 minutes from our base, so a site conversation or a look at your access is straightforward to arrange.

3 day build
Signature SIPs kits typically go up in 1–3 days, around 3 weeks after ordering.
15 sizes
Widths and depths from 2.6m to 5.4m, all at 2.5m roof height.
10 year warranty
Structural warranty, plus 10+ years on the maintenance-free cladding.
What we have learned building in Portsmouth
Built for coastal weather
ToughWood cladding is engineered wood compressed under high pressure: water and moisture resistant, mould and fungal resistant, PVC free and covered by a 10+ year warranty. On an exposed Southsea garden that matters far more than a softwood cladding you would be re-treating every other year.
Small island gardens
Portsea Island gardens are among the smallest in the country. With 15 size combinations from 2.6m up to 5.4m and the ability to build to the boundary, there is nearly always a footprint that works without swallowing the garden.
Access without a driveway
Rear-alley access is common in Fratton and North End. Flat-packed components and a two-person carry make delivery realistic where a modular pod on a crane simply would not fit.

Most popular in Portsmouth
- Home office
- Garden gym
- Therapy room
- Hobby room
Every room is insulated for year-round use, wired through concealed channels, finished with seamless EPDM roofing and clad in maintenance-free ToughWood. Read more about how the insulation works or see a garden office setup.
Areas we cover around Portsmouth
- Southsea
- Old Portsmouth
- Fratton
- North End
- Copnor
- Cosham
- Drayton
- Farlington
- Portchester
- Hilsea
- Havant
- Waterlooville
Not listed? See the full list of areas we cover or just ask — we will tell you straight whether delivery works.
Garden room questions from Portsmouth homeowners
Ready to price a garden room in Portsmouth?
Configure your size, cladding, roof and doors online for an instant price, or download the brochure and take your time.
