Add a beautiful, practical garden retreat built to last. Our Summer Houses Builders in Colliers Wood design and construct bespoke spaces for work, hobbies or relaxing. Expect tidy workmanship, clear timelines and premium finishes.
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From riverside gardens near the River Wandle to plots by Wandle Park, we build summer houses that suit how you live. Whether you want a calm reading room, a home office or a family den, we tailor the layout, glazing and storage. We work across SW19 and nearby South Wimbledon, keeping disruption low and access routes protected. Every build starts with a practical site survey and a clear specification.
Colliers Wood homes often have long, narrow gardens behind Victorian terraces, plus wider plots around 1930s semis and newer apartment developments. We design to make the most of space, light and privacy, including smart positioning to reduce overlooking. If access is tight or there are shared pathways, we plan deliveries and waste removal carefully. The result is a summer house that looks right with the property and performs well year-round.
You’ll get a structured process: consultation, design, foundations, build, electrics, insulation options and interior finishing. We provide straightforward planning advice and manage details such as drainage falls and thresholds. Our team is local (around 10 minutes away), so aftercare is prompt and communication stays simple. Homeowners choose us for dependable scheduling, clean sites and joinery-level finishing.
Ground conditions around the Wandle corridor can vary, so we assess levels, drainage and bearing before setting foundations. Parking and access can be restricted near the Tandem Centre and busier streets, so we schedule deliveries and keep materials secure. We’re used to the garden proportions of Victorian terraces and 1930s semis, and we design rooflines and footprints that sit comfortably within boundaries. For compliance, we align builds with London Borough of Merton expectations and provide planning guidance where needed.
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Costs vary with size, specification and access. As a guide, a small, uninsulated timber summer house can start from around £4,000–£7,000. A larger bespoke build with proper foundations, insulation, electrics and upgraded glazing is commonly £10,000–£25,000+. Premium garden rooms with high-end cladding, heating, data points and full interior finishing can exceed £30,000. We’ll survey your SW19 garden and provide an itemised estimate.
Most builds take 1–3 weeks on site once the design and materials are agreed. Simple bases and pre-fabricated elements can be quicker, while bespoke joinery, complex roofs or extensive interior finishing take longer. Timescales are also affected by access (common with terraces), weather, and electrical requirements. We’ll give you a realistic programme, including foundations, build, first-fix electrics, insulation and final finishing, so you know what to expect day by day.
Many summer houses fall under permitted development, provided they meet limits on height, location and use, and aren’t intended as a separate dwelling. However, rules can change for listed buildings, flats, maisonettes, or if there are restrictive covenants. We provide planning advice and check key constraints for London Borough of Merton, including boundary positioning and maximum heights. If permission is needed, we can help you prepare the details to support an application.
We provide a 10-year warranty on our workmanship and structural build elements, giving you confidence that the summer house is properly constructed. This covers issues arising from installation faults, such as structural movement due to incorrect base preparation or poor fixing methods. Manufacturer warranties apply separately to products like doors, windows, membranes and electrical components. We also offer clear aftercare guidance for timber treatment, ventilation and seasonal checks to keep everything performing well.
You can choose traditional styles with tongue-and-groove boarding, Georgian details and felt or shingle roofs, or contemporary designs with clean lines, large glazing and modern cladding. Popular upgrades include insulation options (walls, floor and roof), double glazing, composite doors, and electrics for lighting, sockets and heating. Interior finishing can range from ply-lined utility spaces to plastered, painted rooms with fitted storage. We’ll guide you through options based on budget, intended use and how your garden sits near the River Wandle.
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