Our Services
Garden Rooms & Outbuildings
About This Service
Professional Garden Rooms & Outbuildings Across Maidenhead, Windsor, Ascot and surrounding areas
Every garden room and outbuilding is supplied with manufacturer-backed warranties and a 5-year workmanship guarantee. Sub Build Ltd handles design, planning and build in-house across Maidenhead, Windsor, Ascot and surrounding areas. We deliver timber, structural steel or modular builds with insulated floors, high-performance glazing and full electrical and heating installs. Free initial indications and a fixed-price quotation follow a full site survey.
Our Process
How It Works
Initial consultation
We visit your property for a free initial indication, discuss use, materials and access, and note planning or building control constraints.
Survey and fixed quote
A full site survey and technical brief is produced, followed by a transparent fixed-price quotation and programme, including any structural calculations and planning support.
Design and build
In-house management from groundworks to finishing trades: foundations, insulated screeds, glazing, electrics and heating, with milestone sign-off and a final snag list.
Benefits
Why Choose us for Garden Rooms & Outbuildings?
Single point of contact
In-house design, planning and site management removes guesswork: one contract, one programme and one accountable project manager.
Membership-backed peace of mind
Work is backed by manufacturer warranties and memberships of The Guild of Master Craftsmen, The Association of Master Tradesmen and Local Surveys Direct, plus our 5-year workmanship guarantee.
Site-ready practicality
We offer plant hire with driver options to keep projects moving, and experience across Victorian terraces, suburban bungalows and modern new builds in Maidenhead, Windsor, Ascot and surrounding areas.
Purpose-led design, not off-the-shelf boxes. Sub Build Ltd design garden rooms and outbuildings to match how you will use them, whether that is a heated home office with data and task lighting, an artist studio with northern glazing, a self-contained annexe or a garden cinema. We detail insulation to current guidance, low U-value glazing, vapour checks and suitable ventilation, and advise on building control pathways so the space performs year round.
Practical delivery, local knowledge. Our 35 years in Maidenhead, Windsor, Ascot and surrounding areas means we know the common site challenges: restricted rear access, shared boundaries and tree constraints. Plant hire reduces disruption and speeds groundworks. To discuss your project call 07834 617 743 or email substructure.b.c@gmail.com. Our office is at Unit 4-6 Fifield Road, Maidenhead, SL6 2PB and we provide fixed-price quotations after a full site survey.
FAQ
Frequently Asked Questions
Many garden rooms fall under permitted development but planning permission depends on size, height, proximity to boundaries and whether the property is listed or in a conservation area. We assess your site and advise the best route, preparing drawings and submitting applications where required.
Related Services
Other Services We Offer
Start your garden room project in Maidenhead
Other Services