Create extra living space without moving with Garden Annexes in Soho. We design and build self-contained annexes with insulation, electrics, plumbing, kitchenette, bathroom and bedroom options. Ideal for guests, grown-up children, home working or rental potential.
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Soho homes often need smarter space, not bigger footprints. Our garden annexes add a fully usable room to your property for work, family or hosting, with proper insulation, electrics and plumbing. We regularly work around tight boundaries and busy streets near Soho Square and Carnaby Street. Every annex is designed to suit how you’ll live in it, not just how it looks.
In W1, gardens can be compact and access routes are often narrow, especially behind Georgian townhouses and mansion flats. We’re used to working with courtyards, roof terraces and rear gardens created through commercial conversions. Whether you’re close to Fitzrovia or Leicester Square, we tailor foundations, drainage and layouts to the realities of central London plots. The result is a comfortable, compliant space that feels like a natural extension of your home.
We start with a site visit, measured survey and clear scope, then produce a detailed design and specification. Your build is managed end-to-end, including electrics, plumbing, insulation and internal finishes, with tidy working practices and agreed delivery schedules. We provide planning support where required and keep communication straightforward throughout. Homeowners choose us for reliable workmanship, transparent stages and a finish that stands up to daily use.
Soho sites often involve tight access, controlled parking and strict neighbour considerations, so we plan deliveries and waste removal carefully. Ground conditions can vary across historic plots, and we specify suitable bases and drainage to protect adjoining structures. In the City of Westminster, we also factor in conservation constraints and party wall sensitivities common to Georgian streets. Our approach keeps disruption low while meeting the expectations of W1 property standards.
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In Soho, garden annexes typically start around £45,000–£70,000 for a compact, well-finished insulated build with electrics. Fully self-contained annexes with kitchenette, bathroom, plumbing, upgraded glazing and premium interiors often fall in the £80,000–£140,000+ range. Costs are influenced by access, foundations, drainage runs, specification level, and whether you need bespoke joinery or acoustic upgrades for busier streets.
Most projects take 8–14 weeks from start on site to handover, depending on size and specification. A smaller studio-style annexe can be quicker, while a self-contained unit with bathroom, kitchenette and higher-end finishes may take longer. Timescales are affected by access in W1, lead times for windows and doors, utility connections, and any approvals or neighbour matters that need to be resolved before work begins.
Some garden buildings can fall under permitted development, but a self-contained annexe intended for sleeping and independent living can trigger additional planning considerations. In the City of Westminster, conservation areas and listed buildings are also common, which may limit what’s allowed. We review your site, intended use and design, then advise on the most likely route and provide planning support, drawings and documentation where needed.
We provide a 10-year warranty covering workmanship and build integrity for your garden annexe, giving peace of mind long after completion. This includes structural elements, weatherproofing and installation quality, subject to normal use and maintenance. Manufacturer warranties also apply to specified products such as windows, doors and certain electrical components. You’ll receive clear documentation at handover, plus guidance on ventilation, heating and upkeep.
You can choose from contemporary timber cladding, composite finishes, brick slips to echo period buildings, or crisp rendered exteriors. Inside, popular options include underfloor heating, acoustic insulation, skylights, built-in storage and compact kitchenette layouts. Bathrooms can be fitted with space-saving suites and high-quality tiling. We guide you through options that suit your budget, your garden size, and the character of Soho properties and neighbouring elevations.
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