Extensions Congresbury

Add space without moving out.

Single and double-storey extensions across Congresbury. Kitchen adds, side returns, rear builds. We design, permit, and construct the whole build. Local team handling every stage, no farming work out.
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Full Build

Dig to finish

All Trades

In house

Congresbury

Based locally

Overstones Design & Build Single Level Extension

– EXTENSIONS

Common Extension
Builds We Handle

Most Congresbury extensions fall into single-storey or two-storey categories. Costs depend on footprint, height, finishes. Ground floor builds start around £25,000. Two-storey work begins higher due to structural loads and extra square footage.

Single Storey

Kitchen & Rear Extensions

From £25,000
Extend your kitchen, add dining space, open up the rear. Single level builds suit most properties. Faster completion, simpler permissions, solid return on square footage gained.
  • Archetectural design laison
  • Planning submitted for you
  • Foundations through to roof
  • Finished internals included

Two Storey

Multi Level Extensions

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Build upwards and outwards together. Bedroom above, kitchen below. Maximises space without eating into the garden. Requires stronger structural work, deeper foundations, proper engineering throughout.

  • Structural engineer appointed
  • Full planning coordination
  • Dig & foundations laid
  • Both levels completed

* Single-storey extensions run 10-14 weeks typically. Two-storey builds take longer due to additional structural complexity and square footage, usually 14-18 weeks. Pricing covers materials, labour, waste disposal, permits. Agreed quote holds unless you request scope changes mid-build.

– Build Stages

How Building Projects Run

Design to handover. We coordinate approvals, manage trades, keep projects moving without gaps or delays.


Plans & Permissions

Architect draws plans matching your needs and site constraints. Engineer confirms structural loads. We submit planning applications, chase council, secure approvals before work starts.


Dig & Structure

Ground excavated to depth. Concrete poured for footings and foundation slabs. Blockwork rises, steel beams positioned, roof frame constructed. Shell becomes weatherproof.


First Fix Services

Electricians wire circuits. Plumbers run pipework. Insulation packed between studs. Boards go up, plaster skimmed smooth. Floor screed laid ready for finishes.


Finishing & Sign Off

Decorating completed, flooring down, fittings mounted. Final building control inspection passed. Completion certificate issued. Space ready to use.

– WHY OVERSTONES

Why Congresbury Properties Use Us

Operating from Congresbury across North Somerset. We handle residential work regularly, know local builders merchants, understand planning requirements, familiar with typical property builds around the area.

Own Crew Throughout

Our team prices it, builds it, finishes it. Not different subcontractors turning up each week wondering what the last lot did.

Fixed Pricing Upfront

Costs broken down before starting. Materials, trades, waste, permits all included. That figure sticks unless you change spec during the job.*

Build Runs Continuously

Site active daily through each phase. We finish your extension completely before moving to the next client.

Building Control Handled

We coordinate inspections at each critical stage. Final sign-off secured before handover. Completion certificate sorted without you chasing officers.

Need more room in your home?

Ring for pricing or request a written quote. We’ll assess the work, provide fixed costs, and start when you’re ready to go.
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