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Side Extension Builders
When rooms feel squeezed and the layout fights daily life, side extensions can add useful width and make cooking, storage and movement feel less cramped.
Why Extend with SB
Plans shaped around where the house feels tightest.
Light, access and room connections considered early.
Openings, beams and foundations plan.
Rooflines and materials matched for a joined-up finish.
Side Extension Options
The best side extension depends on how the house feels narrow now and which change will make everyday living, storage and movement work better.
Reclaim wasted passage space beside the house and make it useful again.
Add ground-floor width for kitchens or utility rooms use.
Add useful width upstairs & downstairs where both floors need more room.
Create a wider kitchen with better movement, storage and light.
Move laundry, storage and daily clutter into a practical side space.
Improve access between the garage and home so spaces connect better.
Side extensions work best when width, approvals and structure are settled early, before awkward compromises affect layout, cost and the finished space.
Side Extension Design
Side extension design should improve circulation, storage and room flow where widening the house helps more than adding depth.
Planning Permission for Side Extensions
Planning permission or permitted development depends on width, height, boundaries and how the design sits beside the property.
Steel Beams for Side Extensions
Openings, steel beams and foundations need early planning so the side extension stays properly supported during the build.
Side Extension Roofing Options
Roof shape, drainage and matching finishes help the side extension sit naturally with home.
Cost of a Side Extension
Cost and timing depend on size, structure, roof type, finishes, access and the approvals needed before work begins.
Get in touch today for a free detailed quote
What people ask about side extensions
That depends on width, height, boundary position and design. Some side extensions may fit permitted development, while others need planning permission.
The cost of a side extension depends on size, foundations, steel beams, roof design, finishes and access, so a site visit helps shape a realistic quote.
Yes. Widening a narrow house can improve circulation, kitchen space, storage and daily comfort, especially where side space is currently underused.
Kitchen space, utility rooms and garage-linked layouts are common choices, but the best use depends on where the house feels tightest now.
Timing depends on approvals, structure, weather, inspections and access, with the side extension timeline shaped by complexity and finish level.
Recent Side Extension Work
Browse recent side extension projects to see how slim gaps and narrow layouts become rooms that feel calmer, wider and easier to use.
Side Extension Contractors
Share the side space you have, what feels cramped now and get clear advice before drawings, approvals and structural work begin.
Free Side Extension Guide
Use the guide to compare layouts, check approvals and spot cost pressure points before you commit to drawings, quotes or build choices.
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Request your free guide before drawings, approvals and side extension plans start shaping the build.
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