Summer Houses Builders in New Malden for garden rooms that look right and work hard. From bespoke design to electrics, insulation and interior finishing, we build spaces you’ll use year-round.
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A well-built summer house can add a calm workspace, hobby room or entertaining spot without altering your home. We design and build to suit New Malden gardens, from compact plots near New Malden High Street to wider lawns by Beverley Park. Choose traditional styles with character or a clean contemporary design with large glazing. Every build is planned around how you’ll use the space, not a one-size kit.
New Malden’s mix of 1930s semis, Edwardian houses and modern apartments means gardens vary hugely in access, levels and privacy. We regularly work across KT3 and nearby Raynes Park, adapting layouts to side passages, shared boundaries and established planting. If you want an office that stays warm, we’ll specify insulation options and ventilation properly. For family homes, we can include storage, durable flooring and easy-clean finishes.
Our process starts with a site visit, measured survey and clear design proposal, followed by foundations, structure, electrics and interior finishing. You’ll get practical planning advice, a tidy schedule, and workmanship that’s built to last. We coordinate deliveries and keep neighbours in mind, especially on tighter streets. Homeowners choose us for straightforward communication, premium materials and reliable aftercare.
We’re used to the practicalities of building in the Royal Borough of Kingston upon Thames, including access constraints, parking, and considerate working hours. Ground conditions can vary, so we choose the right foundation type after assessing levels and drainage. Many New Malden gardens have mature trees and established borders, so we plan around roots and protect planting. We also factor in boundary lines and sightlines for privacy, especially near Manor Park and busy routes.
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Costs vary by size, specification and access. As a guide, a small, uninsulated timber summer house with basic foundations often starts around £6,000–£10,000. A mid-sized insulated garden room with electrics and upgraded glazing is commonly £12,000–£25,000. High-end bespoke builds with premium cladding, full interior finishing and multiple power/lighting circuits can be £25,000–£45,000+. We’ll itemise options clearly after a site visit.
Typical builds take 1–3 weeks on site, depending on size and complexity. Simple structures with straightforward bases can be completed in around a week, while insulated rooms with electrics, plasterboard and detailed finishes often take 2–3 weeks. Timescales are affected by groundwork requirements, drying times for bases, bespoke joinery, and access for materials in tighter New Malden plots. We provide a realistic schedule before work starts.
Many summer houses fall under permitted development, especially when they’re single-storey, within height limits and used as an incidental garden building. However, rules can change if you’re close to boundaries, in a conservation area, or planning a sleeping/annexe-style use. We give planning advice at design stage and can help you check constraints for your property in KT3. If permission is needed, we’ll guide you through the next steps.
We provide a 10-year warranty on our workmanship, covering structural installation, fixings, and the integrity of the build when used and maintained as advised. This includes issues such as movement caused by incorrect base preparation or defects in assembly. Manufacturer warranties apply separately to items like doors, windows, roofing membranes and electrical components. We also explain maintenance requirements (finishes, ventilation, gutters) to help your summer house stay in top condition.
You can choose from traditional timber styles with tongue-and-groove detailing, or contemporary designs with clean lines, composite cladding and large glazed doors. Roofing options include felt, EPDM rubber, or tiled finishes, depending on the look and longevity you want. We can add insulation, plasterboard, flooring, built-in storage and a tailored electrical layout for office or gym use. We’ll recommend materials based on exposure, maintenance preferences and your home’s style.
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