Extensions
Flat Roof Extension
A flat roof extension is a modern, cost-effective way to increase ground-floor living space. It offers a sleek, contemporary appearance and is ideal for kitchens, dining rooms, home offices or utility rooms.
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Generally more affordable than pitched roof alternatives
Minimal impact on existing building height
Perfect for modern, clean-lined architecture
Easier to maintain and adapt in the future
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Roof lanterns or skylights for added natural light
Warm-roof insulation systems
Fibre-glass (GRP), EPDM rubber or built-up felt roofing
Bi-fold, sliding or French doors
Contemporary cladding and render finishes
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Design + planning: 2–6 weeks
Build duration: 6–12 weeks depending on size and specification
Side Extensions
A side extension expands your home along the existing side wall, often using underutilised alley or passage space. It’s a popular way to increase internal floor area without significantly reducing garden size, particularly for terraced and semi-detached properties.
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Makes efficient use of wasted space
Improves layout, flow and functionality
Increases overall property value
Many single-storey designs fall under permitted development
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Single or double-storey extensions
Open-plan kitchens or living areas
Utility rooms, home offices or extra bedrooms
Rooflights or glazed roofing for natural light
Bifold or sliding doors
Bespoke internal finishes and layouts
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Overall project timeframe: 7–12 weeks
Design and approvals: 2–3 weeks
Construction phase: 3–6 weeks
Timescales vary depending on size, complexity and permissions
L-Shape Extension
An L-shape extension transforms unused side and rear space into a large, versatile living area—perfect for open-plan layouts, larger kitchens, utility rooms or extra bedrooms.
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Creates generous, multi-functional floor space
Ideal for Victorian and Edwardian properties
Offers excellent natural light with multiple elevations
Allows for creative interior zoning
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Combination of flat and pitched roof sections
Floor-to-ceiling glazing, lanterns or rooflights
Bespoke kitchen or open-plan living configurations
Integrated storage, underfloor heating and smart-home features
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Design + planning: 6–10 weeks
Build duration: 10–15 weeks depending on size and structural requirements
Double-Story Extension
A double-storey extension is the most impactful way to maximise your property’s footprint, adding substantial living space across two floors—often used for larger kitchens, extra bedrooms, bathrooms or a home office.
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Delivers the greatest increase in square footage and value
Creates balanced living and sleeping arrangements
Ideal for growing families
Long-term, future-proof investment
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Choice of roof style (pitched, gable, hip)
Internal reconfiguration to optimise layout
Juliette balconies, large windows or bi-fold doors
Brick matching, render or cladding for seamless integration
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Design + planning: 6–12 weeks
Build duration: 12–18 weeks depending on scale and structural needs