Garden Building Contractors in Westminster delivering premium garden offices, rooms and cabins built to last. From Pimlico courtyards to Victoria terraces, we design, build and finish with minimal disruption.
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Westminster gardens often need smart, space-efficient buildings that respect the setting and the architecture around them. Whether you’re near Westminster Abbey or a quiet street off Victoria, we create garden rooms and offices that feel like a natural extension of your home. Expect clean lines, strong insulation and careful detailing. We also build summer houses, pergolas and gazebos for year-round use.
The City of Westminster includes Georgian townhouses, mansion flats and high-spec apartments with shared or compact outdoor areas. We’re experienced with tight side returns, basement lightwells and courtyard gardens common around Pimlico and St James’s. Our team plans builds around access constraints, neighbours and premium finishes. The result is a garden building that suits period brickwork and contemporary interiors alike.
We start with a site visit, measurements and a clear specification, then provide a written quote and build schedule. You’ll get guidance on foundations, drainage, electrics and insulation before work begins. We protect paving, planting and communal routes, keeping the site tidy at the end of each day. Homeowners choose us for dependable project management, transparent communication and workmanship backed by a 10-year warranty.
Westminster sites often involve controlled parking, loading restrictions and limited access through narrow passages. We plan deliveries, waste removal and working hours to reduce disruption and keep neighbours on side. Ground conditions vary from made ground to older courtyard substrates, so we specify the right base and drainage approach. If your property is listed or in a conservation area, we help align designs with City of Westminster expectations.




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Costs vary by size, insulation level and specification. In Westminster, a basic shed or workshop might start around £2,000–£6,000, while a well-finished summer house is often £6,000–£15,000. Fully insulated garden rooms or offices with electrics, heating and premium cladding commonly range from £15,000–£40,000+. Access constraints, crane lifts and high-end glazing can increase budgets.
Many builds take 1–3 weeks on site once designs and materials are confirmed. Smaller sheds, pergolas or gazebos can be completed in a few days, while larger log cabins or fully fitted garden rooms may take 3–6 weeks including electrics and interior finishes. Timescales depend on groundworks, access for deliveries, bespoke joinery, and whether you want plumbing, heating or built-in storage.
Many garden buildings can fall under permitted development, especially single-storey structures within height and boundary limits. However, Westminster includes conservation areas and listed buildings, and some flats have restrictions in leases or freeholder rules. We review your site, intended use and position in the garden, then advise whether planning or listed building consent may be needed. If required, we can support drawings and specifications for submissions.
We provide a 10-year warranty on our workmanship for garden buildings, covering structural assembly, fixings, and installation-related defects. Manufacturer warranties apply separately to items such as membranes, doors, windows, cladding systems and electrical components. We also document the build specification so you know exactly what’s included. If an issue arises, we respond promptly and arrange remedial work in line with the warranty terms.
We offer a wide range of options, from contemporary garden rooms with composite cladding and aluminium glazing to traditional timber summer houses and log cabins. Popular choices include cedar or larch cladding, EPDM or felt roofing, skylights, bifold doors and built-in storage. For pergolas and gazebos, we can add slatted screens, lighting and planting supports. We help you choose finishes that suit your property style and maintenance preferences.
Get your free, no-obligation quote today.