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Double Storey Extension Builders
Double storey extensions can ease pressure across the whole house, adding living space below and better bedroom or bathroom space above for family life.
Why Extend with SB
Ground and first floor needs considered together.
Foundations and load paths planned before work starts.
Scaffolding and roof work planned to reduce disruption.
Rooflines and materials chosen to suit existing home.
Double Storey Options
The best double storey extension depends on where space is missing now and which changes will improve room use across the whole house.
Add living space below and bedroom space above in one build.
Create sleeping space where busy households feel under pressure.
Improve upstairs layout so bedrooms, storage and access feel easier.
Widen the house on both floors and improve how rooms connect.
Add upstairs bathroom where morning routines need to work better.
Use rooflines and materials that help the extension sit naturally.
Double storey extensions need careful early planning because structure, approvals and room layout all affect cost, disruption and finished home.
Double Storey Extension Design
Double storey extension design should improve living space below and bedroom or bathroom space above, so the whole home works better.
Planning Permission for Double Storey Extensions
Planning permission usually depends on height, depth, boundaries and design, with party wall considerations sometimes affecting the project.
Structural Calculations for Double Storey Extensions
Foundations, structural calculations, steel beams load paths need planning carefully because the extension weight over two floors.
Scaffolding for Two Storey Extensions
Roofing, scaffolding and site access affect protection, timing and how smoothly the build can move once work begins.
Cost of a Double Storey Extension
Cost and timing depend on size, structure, roofing, finishes, access, approvals and how much matching work is needed.
Get in touch today for a free detailed quote
What people ask about double storey extensions
Usually, yes. Height, depth, boundaries and design all affect approval, and some projects may also need party wall agreements before work begins.
The cost depends on size, foundations, structural steel, roof form, access and finishes, so drawings, site detail and the brief need checking first.
Yes. Extra bedrooms and a bathroom above can work well together, provided the first floor layout and structure are planned properly.
Yes. Structural calculations, load paths, foundations and steel beams matter more because the extension carries more weight and affects more of the house.
Timing depends on approvals, scaffolding, structure, roofing, inspections and finish level, with complexity and matching work shaping the programme.
Recent Double Storey Work
Browse recent double storey projects to see how homes gain better living space, extra rooms and layouts that feel easier to manage.
Double Storey Extension Contractors
Share what the house is missing now, how both floors need to work get clear advice before drawings and approvals begin.
Free Double Storey Guide
Use the guide to compare layouts, check approvals and spot cost pressure points beforecommit to drawings, quotes, build choices.
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Request your free guide before drawings, approvals and double storey plans start shaping the build.
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