Insulated, wired, plumbed and finished to the same standard as the house. Home offices, gyms, therapy rooms, teenage dens — full-year usable, planning-friendly, delivered by one owner-led team.
A plain-English overview of what the DAB team delivers, who it's for and when it matters. No marketing filler.
A garden room is a purpose-built, insulated standalone structure in the garden — used year-round as a home office, gym, therapy or treatment room, art studio, music room, teenage den or guest space. We build fully from scratch (foundations up), or install and finish a supplied garden-room kit.
Home-workers permanently remote or hybrid, small business owners running client-facing appointments (therapists, coaches, PTs, hairdressers), families needing separated study space, and homeowners wanting a self-contained gym or hobby space away from the main house.
When you'd like the space of an extension without the disruption inside the main house, when your loft or garage isn't suitable, or when the garden's already got the room and you'd rather build outside than reconfigure inside.
Cheap garden rooms don't last. Uninsulated single-glazed structures on a paving-slab base become saunas in summer, freezers in winter and rot within a decade. A properly built garden room with insulated floor, walls and roof, quality glazing and a real electrical spec is indistinguishable from an extension — for a fraction of the disruption.
The specific ways this job goes bad when it's ignored, DIY'd, or handed to the cheapest quote in the WhatsApp group.
Rooms built directly onto slabs or without a proper DPC quickly draw moisture into the timber structure. Panels warp, floors bounce, and within 5–8 years the whole unit is failing.
Under-insulated garden rooms with low-spec glazing hit 30°C+ in summer and drop below 10°C in winter. You end up not using the room you paid for.
Garden rooms typically fall under PD, but exceed the 2.5m eaves height (within 2m of the boundary) or the 30m² area threshold and you're into full planning — with retrospective enforcement risk if you got it wrong.
DIY-run garden-room electrics without an armoured cable, proper RCD protection, or an IP-rated distribution point are a legitimate fire and shock risk. Not the corner to cut.
The exact system our team runs on every job — from your first message to the certificate in your handover pack.
We measure the garden, check ground conditions, identify the best position for light and privacy, and agree the internal layout and finish. Drawings issued for PD sign-off or planning where required.
Itemised quote covering foundations, superstructure, roof, glazing, insulation, electrics (and plumbing where specified), plaster and decoration. Programme and completion date.
Concrete pads or screwed steel piles depending on ground conditions; insulated raft or beam-and-block floor; timber-frame walls with 100–150mm insulation; SIPs or warm-roof flat roof with 150mm PIR insulation.
Cladding fitted (Siberian larch, thermally-modified pine, western red cedar, composite or fibre-cement), doors and windows fitted, roof covered with EPDM or GRP. Armoured cable run from the house, RCD-protected sub-consumer unit, first-fix plumbing if required.
Interior boarded, plastered, decorated, flooring laid, second-fix electrics and plumbing completed. Building Regs handled where applicable (usually not required for a genuinely 'garden' outbuilding but always confirmed at survey).
What you actually get when you hire us for this job — measurable, provable, and reflected in every one of our verified reviews.
Properly insulated floor, walls and roof plus double- or triple-glazed doors and windows mean the room is warm in January and cool in July.
The build happens outside. Your kitchen, bedrooms and daily life continue undisturbed — dust and mess stays in the garden.
Armoured cable, IP-rated distribution, and a full spec of sockets, lighting and Cat6 data — not a stray extension lead through the shed door.
Standalone structures aren't constrained by matching the main house's style. Larch cladding, black-framed glazing, green roofs — genuinely design-led options.
Bought a garden-room kit and don't want to assemble it yourself? We install and finish supplied kits at a fixed price. Prefer bespoke? We design and build from scratch.
Same accountability as our house work — you're not buying from a website with no local presence.
The specification-level answers the internet usually skips.
Concrete pads or strip foundations on stable ground. Screwed steel piles (helical foundations) where roots or services rule out excavation — installed in hours, load-tested to spec, and reversible if needed. Fully insulated raft foundations for premium warm-roof, warm-floor builds.
Timber-frame studs at 400 or 600mm centres, insulated with mineral wool or PIR, breather-membraned externally and vapour-controlled internally. Cladding options: Siberian larch (naturally durable, silvers over 3–5 years), thermally-modified pine, western red cedar, composite (fibre-cement), painted feather-edge for a classic garden-building look.
Warm-roof flat roof with 150mm PIR and EPDM (Firestone or Classicbond) or GRP finish, aluminium fascia. Pitched roofs available for gabled or lean-to designs. Doors and windows: aluminium-framed sliders, bi-folds, or French sets — Origin, Schuco or equivalent.
Armoured SWA cable from the main house consumer unit (typically 6mm or 10mm depending on load), sub-consumer unit with RCD protection inside the garden room, LED downlights, sockets, and USB-C outlets as spec allows. Cat6 for stable working data. Plumbing where a WC or kitchenette is wanted — hot-and-cold from the main house or from a dedicated electric water heater.
Most garden rooms are residential — offices, gyms, studios. Small commercial garden buildings (single-therapist treatment rooms, garden salons) are also common and follow the same build spec, with any change-of-use planning handled at design stage.
The questions we're asked at almost every survey. Not on the list? Call 07834 974462 — the DAB team is happy to talk it through.
Entry-level insulated garden rooms 12–15m² typically £22k–£30k. Mid-range 15–25m² with premium glazing and cladding £30k–£50k. Larger studio-plus-shower-room builds £50k+. Fixed on written quote after survey.
Most garden rooms complete in 4–8 weeks from breaking ground to handover, depending on size and spec.
Usually not — garden buildings under 2.5m eaves height (if within 2m of a boundary) and under 4m ridge (dual-pitched) or 3m (any other roof) typically fall under Permitted Development. We confirm your specific site at survey.
Yes — plumbing runs from the main house or a dedicated hot-water heater, drainage to the main house waste run. Under a certain floor area and use, a WC is fine under PD; a full bedroom-and-bathroom outbuilding may cross into requiring planning.
Yes, properly built. 100–150mm wall insulation, 150mm roof insulation, insulated floor and quality double-glazing plus a small electric heater or air-conditioning unit keeps it comfortable through Surrey winters.
Yes — we install and finish supplied kits at a fixed price, including foundations, electrical connection and internal finish.
No fixed paperwork — the same promise we give on every job: if the build has a defect, we return and put it right. It's why our work is 5.0-rated across nine verified reviews.
Garden rooms across Staines-upon-Thames, Egham, Ashford, Chertsey, Sunbury-on-Thames, Weybridge, Windsor, Feltham and Kingston upon Thames.
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Free on-site survey. Fixed written quote in 2–3 working days. No pressure, no hidden costs, no unknown extras. The DAB team replies personally.
07834 974462