Garden Annexes in West Dulwich that feel like a real home, not a glorified shed. We design and build self-contained spaces with a kitchenette, bathroom and bedroom, fully insulated with electrics and plumbing. Ideal for guests, grown-up children or a private workspace.
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West Dulwich homeowners often want extra space without compromising the garden. Our annexes are fully self-contained, with a bedroom area, bathroom and kitchenette, designed to suit SE21 plots and lifestyles. Whether you’re near West Dulwich station or closer to Belair Park, we plan the layout to protect light, privacy and planting. The result is a comfortable, independent space that works in every season.
The West Dulwich area is known for leafy streets and period properties, from Victorian villas to Edwardian houses and well-kept conversions. These homes often have long gardens, side access constraints and mature trees that influence positioning and foundations. We design garden annexes west dulwich area clients can use as guest suites, multigenerational living or rental-style accommodation (where appropriate). Every build is tailored to the character of the property and the practicalities of the plot.
We start with a site visit, then produce a clear specification covering insulation, electrics, plumbing, ventilation and finishes. You’ll get planning support from the outset, plus a build schedule that keeps disruption controlled and predictable. Our team coordinates trades so the kitchenette and bathroom are installed properly and signed off. Local homeowners choose us for tidy working, transparent communication and a premium finish that lasts.
Across West Dulwich and nearby Dulwich Village, access can be tight and parking controls are common, so we plan deliveries and waste removal carefully. Ground conditions vary, and mature trees near Dulwich Wood may influence foundation choices and drainage routes. We also consider neighbouring sightlines typical of period gardens and boundary walls. Where needed, we help you navigate London Borough of Lambeth requirements and documentation.
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Costs in SE21 typically range from £45,000–£85,000 for a compact, well-finished annexe, and £85,000–£140,000+ for larger, premium builds with higher-end kitchens, bathrooms and glazing. Price is influenced by size, specification, groundworks, drainage runs, electrical capacity, and whether you need extra soundproofing or bespoke joinery. We provide an itemised estimate after a site survey.
Most garden annexes take around 8–14 weeks on site once designs and approvals are in place. Simpler builds with straightforward access and short utility runs can be quicker, while larger annexes with complex groundworks, bespoke interiors or extensive glazing can take longer. Timescales also depend on lead times for windows, kitchens and bathroom fittings, plus any planning or party wall considerations.
Some garden buildings can fall under permitted development, but a self-contained annexe with sleeping, bathroom and cooking facilities may trigger extra rules. In the London Borough of Lambeth, constraints such as conservation areas, height limits, boundary distances and intended use can affect what’s allowed. We assess your site, advise on the best route, and provide planning support, drawings and documentation where an application is needed.
We provide a 10-year warranty covering the build structure and workmanship, giving you long-term confidence in the annexe. This includes key elements such as framing, insulation installation, weatherproofing and internal finishes fitted by our team. Electrical and plumbing works are completed by qualified trades and certified accordingly. We also carry appropriate insurance and will address any snagging promptly after completion.
You can choose from contemporary or traditional styles to suit West Dulwich period homes, including timber cladding, brick slips, or composite finishes. Popular options include aluminium or timber-framed glazing, underfloor heating, acoustic upgrades, and space-saving kitchenette layouts. Bathroom choices range from compact shower rooms to full suites. We guide you through layouts, materials and finishes to balance budget, durability and the look of your garden.
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