Create a private, self-contained space that works like a small home. Our Garden Annexes in Brockley include insulation, electrics, plumbing, and full planning support.
Response within 24 hours
A garden annexe is the practical way to add living space without moving, whether it’s for family, guests, or a quiet rental-style setup. In SE4, we design annexes that sit comfortably behind period homes and feel like a natural extension of the garden. We regularly work near Hilly Fields and around Brockley Market, so we understand the local layout and access quirks. Each build can include a kitchenette, bathroom and bedroom for true independence.
Brockley’s Victorian terraces, Edwardian houses and mansion conversions often have long gardens but limited side access. That means careful planning for foundations, deliveries and keeping neighbours happy during the build. We tailor rooflines, cladding and window placement to suit conservation-sensitive streets and garden privacy. If you’re comparing garden annexes Brockley area options, we’ll help you balance footprint, light and year-round comfort.
Fine Landscaping manages the full project: survey, design, groundworks, insulation, electrics, plumbing and final finishes. You’ll get clear specifications, realistic timelines and tidy site practice, with a dedicated point of contact throughout. We also provide planning support, including drawings and guidance on what to submit. Homeowners choose us for consistent workmanship, transparent pricing and a 10-year warranty on our builds.
Across the London Borough of Lewisham, access and parking can be the biggest challenge on residential streets, so we plan deliveries and waste removal carefully. Brockley gardens often have mature trees and varied ground levels, which can affect foundations and drainage runs. We design around party boundaries and overlooking, especially near mansion conversions and tight rear plots. If you’re considering garden annexes in London Borough of Lewisham, we’ll also factor in local planning constraints and neighbour considerations from day one.
Rated 4.9/5 from over 280 verified reviews
In Brockley, a well-built garden annexe typically starts around £60,000–£90,000 for a compact, insulated studio with electrics. A larger self-contained unit with kitchenette, bathroom, bedroom, higher-spec glazing and more complex plumbing often falls in the £95,000–£160,000+ range. Costs vary with size, access, ground conditions, finishes, and whether you need extra drainage runs or upgraded electrical supply.
Most garden annexes take around 8–14 weeks from breaking ground to practical completion, depending on size and specification. Simpler layouts with straightforward access can be faster, while bathroom/kitchen plumbing, bespoke joinery, or restricted rear access can add time. Lead times for windows, cladding and internal finishes also matter. We provide a staged programme so you know what’s happening each week.
Some garden buildings can be permitted development, but a self-contained annexe with sleeping and bathing facilities may trigger planning requirements, especially in Lewisham. Height, boundary distances, overall footprint, and intended use all affect the decision. We offer planning support, checking constraints, advising on likely routes, and preparing the information needed for an application. Where permitted development applies, we’ll still recommend evidence and compliance checks.
We provide a 10-year warranty covering the structural build and core construction workmanship for your garden annexe. This includes key elements such as the base, framing, insulation installation and weatherproofing, subject to normal use and maintenance. Manufacturer warranties apply separately to items like windows, doors, electrics components and bathroom fittings. We also carry appropriate insurance and supply completion documentation for electrical and plumbing works.
You can choose from contemporary or traditional looks, including timber cladding (cedar or larch), composite boards, or rendered finishes to complement Brockley’s period homes. Roof options include flat with lanterns, warm roofs, or pitched profiles for extra headroom. Inside, we can fit compact kitchenettes, walk-in showers, built-in storage and acoustic upgrades. We’ll guide you through layouts, glazing positions and finishes to match budget and privacy needs.
Get your free, no-obligation quote today.