Create a private, self-contained space without moving. Our Garden Annexes in Blackheath add a bedroom, bathroom and kitchenette with full insulation, electrics and plumbing. Designed to suit period gardens and modern family life.
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A garden annexe is a practical way to add independent space for family, guests or working from home. In SE3, we build high-spec annexes that feel like a real extension of your lifestyle, complete with kitchenette, bathroom and bedroom. We’re used to projects near Blackheath Common and the streets around Blackheath Village, where quality finishes matter. Every build is tailored to your plot, access and intended use.
Blackheath’s affluent village atmosphere and Georgian architecture often come with mature gardens, shared boundaries and sensitive sightlines. We regularly work with Georgian townhouses, Victorian villas and period conversions across Greenwich, Lee and Kidbrooke. That means we plan layouts that respect neighbouring windows, retain character features and make the most of narrower side access. The result is a garden building that looks considered, not bolted on.
Fine Landscaping manages the project from survey to handover, including planning support and building control-ready specifications. We coordinate foundations, insulation, electrics and plumbing so the annexe performs year-round and stays compliant. You’ll get clear schedules, tidy working practices and quality checks at each stage. Homeowners choose us because we deliver premium finishes, transparent communication and dependable aftercare.
Access and parking can be tight around The Paragon and the lanes near All Saints Church, so we plan deliveries, waste removal and working hours carefully. Gardens here often have mature trees and established boundaries, which can influence foundations and service runs. We also factor in council expectations across the Royal Borough of Greenwich/London Borough of Lewisham, especially on appearance, overlooking and drainage. Our designs keep disruption low while protecting the look and value of period homes.
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In Blackheath, most garden annexes fall broadly between £45,000 and £120,000+, depending on size, specification and site constraints. A compact, self-contained studio with a shower room typically sits at the lower end, while larger layouts with a separate bedroom, higher-end kitchenette, premium glazing and complex groundworks cost more. Access, drainage connections, electrical upgrades and insulation levels also influence the final budget.
Typical build times are around 8–16 weeks from site start to completion, depending on size and complexity. Groundworks and foundations can take longer where access is restricted or drainage runs are lengthy. Bespoke joinery, premium finishes and specialist glazing can add lead time. If planning approval or building control checks are required, we’ll map these into the programme so you have a realistic timeline before work begins.
Some garden annexes can be built under permitted development, but it depends on height, footprint, boundary distances, previous extensions and how the space will be used. In conservation-sensitive streets and with certain period properties, extra restrictions may apply. We provide planning support, check the rules for the Royal Borough of Greenwich/London Borough of Lewisham, and advise whether a full application or a lawful development certificate is the best route.
We provide a 10-year warranty covering workmanship and the structural integrity of the build, giving you long-term confidence. This includes key construction elements such as the building shell, insulation installation and weatherproofing, provided the annexe is used and maintained as intended. Manufacturer warranties apply separately to items like windows, doors, electrics components and sanitaryware. We’ll explain what’s covered and supply documentation at handover.
You can choose from contemporary or traditional designs to suit Blackheath’s period homes, including timber cladding, brick slips, rendered finishes or composite boards. Inside, popular options include underfloor heating, acoustic insulation, pocket doors and built-in storage. For the kitchenette and bathroom, we can specify compact appliances, stone-effect worktops and space-saving sanitaryware. We’ll guide you through layouts, finishes and performance upgrades to match budget and use.
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