Extension Builder Cost in Shrewsbury

Home extensions are a popular way to add space and value to Shrewsbury properties, but costs vary significantly based on project scope, materials, and complexity. Extension builders charge differently depending on foundation work, structural requirements, and finish specifications. Understanding local market rates helps you budget effectively and find quality tradespeople. BizHub365 connects homeowners across Shrewsbury with experienced extension builders who provide transparent pricing and quality workmanship.

Extension Builder Prices in Shrewsbury

Service	Typical Cost	Unit
Single-storey brick extension (per square metre)	£95 – £160	per sqm
Two-storey extension (per square metre)	£140 – £220	per sqm
Garage conversion	£8000 – £15000	per job
Rear extension (20-25 sqm)	£2800 – £5500	per job
Building regulations approval and inspection	£400 – £800	per job
Architectural design drawings	£600 – £1200	per job
Basement excavation and structure	£150 – £250	per sqm
Conservatory (uPVC, 20 sqm)	£5000 – £9000	per job

Prices are indicative averages for Shrewsbury. Actual quotes will vary based on job specifics.

What Affects the Cost?

Extension costs in Shrewsbury depend on several key factors. Foundation depth and ground conditions significantly impact expenses—clay soil common in the area may require additional preparation. Your existing property's construction type (brick, stone, timber frame) affects compatibility and labour time. Single-storey extensions are generally more affordable than two-storey builds. Materials selection—from standard brick to premium finishes—creates substantial variation. Planning permission and Building Regulations approval timescales also influence overall project duration and cost.

Money-Saving Tips

Obtain multiple quotes from local builders to compare pricing and specifications. Plan extensions during quieter seasons (autumn/winter) when builders may offer competitive rates. Maximise single-storey designs where feasible, as they're more cost-effective than two-storey additions. Prepare detailed briefs with drawings to reduce design-stage amendments and avoid costly variations mid-project.

Frequently Asked Questions

What's included in a typical extension builder quote?

A comprehensive quote should cover structural work, foundations, brickwork, roof construction, windows/doors, internal finishing (plastering, electrics, plumbing), and disposal of waste. Check whether your quote includes planning permission fees, Building Regulations approval, and any provisional sums for unforeseen work. Ask for a detailed breakdown rather than lump-sum pricing.

Do I need planning permission for all extensions in Shrewsbury?

No. Permitted Development Rights allow certain single-storey rear extensions up to 4 metres deep (or 3 metres for semi-detached properties) without planning permission. Two-storey extensions, those exceeding these limits, or those in Conservation Areas typically require permission. Building Regulations approval is always required. Consult your local council or builder before proceeding.

How long does a typical extension take?

A single-storey rear extension usually takes 10-16 weeks from start to completion. Two-storey builds may take 20-28 weeks. Timescales depend on size, complexity, ground conditions, and weather. Planning/Building Regulations approval adds 4-8 weeks pre-construction. Weather delays and unforeseen issues like asbestos removal can extend timelines.

What's the difference between a builder's quote and an architect's cost?

Builders quote construction labour and materials costs. Architects charge separately for design, drawings, and planning submissions (typically £600-£1,200 for small extensions). Some builders include basic design; others don't. Getting both professional input—an architect for design and a builder for costings—ensures the extension is buildable and within budget before work starts.

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