Summer Houses Builders in Mayfair delivering bespoke garden rooms with flawless detailing. From foundations and electrics to insulation and interior finishing, we build spaces that feel like part of your home. Designed to suit W1 gardens and discerning tastes.
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Mayfair gardens demand craftsmanship, discretion and intelligent design. Whether you’re close to Berkeley Square or walking distance from Mount Street, we create summer houses that complement the architecture and maximise usable space. Choose a traditional timber look or a crisp contemporary design with clean lines. Every build is planned around access, neighbours and the finish standards expected in W1.
We regularly work with Georgian mansions, palatial townhouses and luxury apartments where outdoor space is valuable and often compact. Our designs respect period features while adding modern comfort, including insulation options for year-round use. If you want a quiet office, gym, studio or entertaining room, we’ll shape the layout around how you live. Clients in Marylebone, St James’s and Soho value our tidy sites and high-spec detailing.
We start with a site visit, measurements and a clear proposal covering design, foundations, electrics and finishes. You’ll get practical planning advice, a realistic programme, and a dedicated point of contact throughout. Our team protects paving, planting and access routes, then leaves the garden clean and ready to enjoy. Homeowners choose us for consistent quality, transparent scopes and workmanship backed by a long warranty.
Mayfair sites often involve restricted access, controlled parking and tight delivery windows, especially around Claridge’s Hotel and busy W1 streets. We plan logistics in advance, use compact equipment where needed, and keep noise and disruption to a minimum. Ground conditions can vary between courtyards and raised terraces, so we specify the right base and drainage approach. Our builds suit local property styles, from formal townhouse gardens to modern roof-level terraces near Hyde Park.
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Costs in Mayfair vary by size, specification and access. As a guide, a high-quality small summer house can start around £8,000–£15,000, while larger bespoke garden rooms with insulation, electrics, premium glazing and interior finishing often fall between £18,000–£45,000+. Complex foundations, limited access in W1, and higher-end joinery or cladding can increase the budget. We provide itemised options to match your brief.
Typical build times range from 2–6 weeks once design and materials are agreed. A simpler timber summer house with straightforward access may be completed in 10–15 working days, while insulated garden rooms with electrics, plastering and fitted storage can take 4–6 weeks. Timescales are influenced by foundations, drying time for bases, bespoke joinery lead times, and any access restrictions or delivery constraints common in Mayfair.
Many summer houses can be built under permitted development, provided they meet limits on height, placement and overall garden coverage. However, the City of Westminster has sensitive streetscapes, and some homes may be listed or in conservation areas, which can change what’s allowed. We review your property constraints, advise on likely requirements, and can help prepare drawings and supporting information if an application or consent is needed.
We provide a 10-year warranty on workmanship for your summer house build, covering key construction elements such as foundations, structural framing, fixings and installation quality. Manufacturer warranties apply separately for products like doors, windows, roofing membranes and electrical components. We also offer clear aftercare guidance to protect timber finishes and keep everything performing well. Any snagging issues are handled promptly and professionally.
We build traditional styles with tongue-and-groove timber and heritage detailing, as well as contemporary designs with composite cladding, aluminium glazing and flat or low-pitch roofs. Popular upgrades include insulation, heating-ready electrics, oak or engineered flooring, built-in storage, and feature lighting. We help you choose finishes that suit your townhouse or apartment garden, balancing privacy, natural light and long-term durability in the Mayfair climate.
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