Frame & structure
C24 graded timber frame on insulated raft or screw-pile foundations. Properly tied and braced — not just nailed.
Bespoke Summer Houses
Summer Houses BuiltIn-Situ by Carpenters —Not Bolted Together From a Kit.
Bespoke timber summer houses, garden retreats and outdoor entertaining spaces. Designed to your garden, built on proper foundations, finished to a standard that lasts decades.
Hand-built · Fully insured · Free site design visit
15+
Years on the tools
100+
Projects delivered
5★
Bark client rating
1 Day
Quote turnaround
Family
Run since 2016
Service Overview
What you get when a summer house is built — not assembled.
A bespoke summer house is a hand-built timber garden building designed specifically for your garden, your usage and your aesthetic. It's not a flat-pack kit dropped on paving slabs. The difference is visible immediately and structural over time.
Ridgeline summer houses are framed on-site from C24 graded timber, set on proper insulated or screw-pile foundations, weatherproofed with breathable membranes, and clad in real timber with 25-year working life. Joinery — doors, windows, opening shutters — is fitted to fine tolerances, not the loose tolerances of a flat-pack.
Inside, you can specify anything from a simple painted-board finish for a relaxed garden retreat to fully insulated and plastered interiors for year-round use. Power, lighting, heating and even a small kitchenette can all be designed in.
Most summer houses fall within Permitted Development. We'll guide you through the size, height and siting limits on the free design visit.
The cost of getting it wrong
Why kit summer houses look tired by year three.
The garden building market is dominated by mass-produced kits. They photograph beautifully on day one and become firewood within a decade.
Untreated timber
Most kits use untreated softwood. It rots from the ground up within 5–10 years, often unseen until it's structurally compromised.
Pad foundations
Buildings sat on paving slabs sink unevenly, twisting frames and breaking door/window seals.
Thin cladding & no breather membrane
Single-skin tongue-and-groove with no membrane behind soaks up rain and starts rotting from inside.
Loose joinery
Kit doors and windows arrive with significant tolerance gaps that worsen with seasonal movement. Within a few years they jam shut or won't lock.
Felt roofs that fail in 5–7 years
Most kits use the cheapest roofing felt. EPDM rubber lasts 50 years for not much more cost.
Our Process
A clear, step-by-step system from first call to final handover.
- 01
Free Design Visit
We measure the garden, discuss style and use, and produce a sketch design.
- 02
Design Sign-off & Quote
Refined drawings, material specification and fixed itemised quotation.
- 03
Foundations
Insulated raft, screw-pile or properly engineered ground-level base depending on building size.
- 04
Build
Frame, weatherproof, clad, glaze, roof and finish — built in-situ on your site.
- 05
Handover
Decorated, lit and ready to use on handover day.
The Benefits
What you actually get when Ridgeline delivers your project.
Built to your garden
Designed around your space — not made to fit by trimming and packing on assembly day.
Real foundations
Insulated raft or screw-pile base — no sinking, no twisting, no leaking joints.
Real timber, real lifespan
Treated structural timber with cedar, larch or composite cladding — 25+ year working life.
3–6 week typical build
Most bespoke summer houses complete in under 6 weeks from foundation start.
Adds garden value
A beautiful, properly built summer house is a feature on resale — kit buildings are usually a write-off.
Truly turnkey
Wired, lit, painted and ready to use — bring the cushions on day one.
In detail
Style, structure and the spec choices that decide longevity.
Summer houses range from simple shingle-roofed retreats to fully glazed garden lounges. Here's how we approach the spec.
Cladding options
Western Red Cedar, Siberian Larch, painted shiplap, or composite cladding. All on a ventilated rainscreen.
Roofing
EPDM rubber for flat or low-pitch roofs (50-year warranty); cedar shingles or fibre-cement slates for pitched designs.
Joinery & glazing
Hand-fitted timber doors and windows or double-glazed aluminium where you want maximum daylight and minimum maintenance.
Insulation & year-round use
If you want to use it 12 months a year, we insulate floor, walls and roof to garden-room standard. Otherwise a 'summer use' spec keeps cost down.
Power, lighting & heating
Dedicated armoured supply, internal and external lighting, heating where required. All Part P certified.
FAQs
Honest answers about your summer house project.
Can't see your question? Call Alex directly on 07368 183733 or request a free estimate.
How much does a bespoke summer house cost?+
Most bespoke summer houses range from £8,000–£25,000 depending on size, glazing, cladding and whether it's insulated for year-round use. Every quote is fixed and itemised.
How long does it take to build?+
Most projects complete in 3–6 weeks from foundation start to handover.
Do I need planning permission?+
Most summer houses fall within Permitted Development. Height, footprint and boundary distance limits apply — we'll confirm on the free design visit.
Can I use it in winter?+
Yes, if specified for year-round use with proper insulation, glazing and heating. We'll spec it correctly based on how you want to use it.
What's the lifespan?+
A properly built summer house with proper foundations, treated structural timber and EPDM roofing has a working life of 25+ years with only routine maintenance.
Can you match an existing garden style?+
Yes. We design every summer house specifically for the garden it sits in, working with materials and detailing that complement the host property.
Do you handle electrics?+
Yes. Dedicated armoured supply from the house consumer unit to the summer house, all Part P certified.
Can you replace an existing rotted summer house?+
Yes. We'll remove and dispose of the old building, prepare proper foundations, and build the new structure on the same footprint.
Will you supply drawings?+
Yes. We produce design drawings as part of the design visit so you can see and refine the building before committing.
How do I get started?+
Call 07368 183733 or request a free design visit. We'll come, measure, discuss your ideas and have drawings and a fixed quote back within a working week.
Related services
Other ways Ridgeline can help.
Ready to start your summer house project?
Speak directly with Alex — the owner — for a free, no-obligation estimate. Most quotes returned within one working day.
ridgelinersc@gmail.com