Create a private, fully liveable space without moving home. Our Garden Annexes in Chiswick are self-contained with insulation, electrics, plumbing, and bespoke interiors. Ideal for guests, grown-up children, or a quiet home office with real comfort.
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Chiswick homeowners often need extra space that still feels part of the home. A garden annexe gives you a self-contained room with a bedroom, bathroom and kitchenette, perfect for family, guests or rental flexibility. We regularly work near Chiswick High Road and around W4, where gardens vary from compact courtyards to deep plots. Every build is tailored to how you want to live and use the space year-round.
From Georgian houses and Victorian villas to Edwardian family homes, Chiswick’s properties deserve annexes that respect period character while adding modern performance. We design layouts that suit long, narrow gardens, side returns, and mature planting typical of streets near Gunnersbury and Kew. Insulation, ventilation and glazing choices are specified to keep the annexe comfortable in all seasons. The result is a premium finish that complements the main house rather than competing with it.
Fine Landscaping manages the full journey: survey, concept design, specification, and build, including electrics and plumbing. We coordinate trades, keep neighbours considered, and maintain a clean, secure site throughout. You’ll get clear milestones, transparent allowances, and practical guidance on planning and building control. Many clients choose us because we deliver dependable workmanship and a tidy handover, even when access is tight.
Across the London Borough of Hounslow, access and parking can be the biggest constraints, especially on residential roads near Fuller's Brewery and Chiswick House. We plan deliveries, protect paving and planting, and choose construction methods that reduce disruption. Chiswick gardens can have mature trees and variable drainage, so we assess ground conditions early and specify suitable foundations. Our approach suits both period homes and contemporary extensions in the garden annexes chiswick area.
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Costs in W4 vary with size, specification and services. As a guide, a compact, insulated annexe with electrics typically starts around £45,000–£70,000. A fully self-contained unit with kitchenette, bathroom, plumbing connections and higher-end finishes is often £80,000–£140,000+. Groundworks, drainage runs, bespoke joinery and premium glazing can move the budget further.
Most projects take around 8–14 weeks on site once designs and approvals are in place. Simpler garden rooms can be quicker, while self-contained annexes with bathroom, kitchenette, and longer service runs usually take longer. Lead times for glazing, kitchens and specialist cladding can add weeks. Access constraints, party wall considerations, and weather during groundworks also affect the programme.
Some garden buildings can fall under permitted development, but a self-contained annexe is more likely to need planning because it’s intended for independent living. Rules can also change if your home is listed, near protected sites, or if height and boundary distances are tight. We review your plot, advise on the best route, and provide planning support so your garden annexes in London Borough of Hounslow are properly compliant.
We provide a 10-year warranty covering workmanship and installation, including key elements of the structure, insulation build-up, and weatherproofing details. Manufacturer warranties apply separately to items such as windows, doors, roofing membranes, boilers or electric heaters, and appliances. We also issue the relevant electrical certification and ensure plumbing is installed to current standards. After handover, we remain available for snagging within the agreed period.
You can choose from contemporary or more traditional styles to suit Chiswick’s period homes. Popular options include cedar or composite cladding, brick slips, zinc-effect roofing, large sliding doors, and rooflights for natural light. Inside, we can fit compact kitchenette units, shower rooms, built-in storage and acoustic upgrades. We’ll guide you through finishes, energy-efficient heating, and layout planning to match your budget and intended use.
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