Extension cost in Shrewsbury (2026): local prices by postcode
Quick answerA 20m² single storey rear extension in Shrewsbury typically costs £54,500 to £62,500 including VAT. Shrewsbury prices close to our West Midlands base. Flood risk near the Severn and conservation rules in and around the town centre are the main local factors that add cost.
Typical prices in Shrewsbury
Shrewsbury SY3, West Midlandsindex 1.01- Single storey rear extension20 m² (5m × 4m)£54,500 to £62,500£2,900/m²
- Kitchen extension with bifolds24 m² (6m × 4m), mid spec£72,500 to £83,000£3,210/m²
- Double storey rear extension40 m² over two floors£87,500 to £100,500£2,330/m²
- Dormer loft conversion2 bedrooms + en-suite£49,000 to £57,500
- Velux loft conversion2 rooms£35,000 to £41,000
- Garage conversion15 m² single garage£20,000 to £23,000£1,420/m²
All prices include 20% VAT, professional fees and statutory planning fees. Kitchen extension includes a mid-range kitchen, bifolds and a roof lantern.
Price my exact projectBuilding in Shrewsbury
Shrewsbury sits in a loop of the River Severn, with a historic centre of timber-framed and Georgian buildings, Victorian and Edwardian terraces in areas such as Belle Vue and Coleham, and interwar and modern suburbs further out. Rear kitchen extensions, loft conversions and garage conversions are common. The town and surrounding villages are covered by Shropshire Council, which handles planning and building control.
What moves the price in Shrewsbury
River Severn flooding
Areas close to the Severn, such as Frankwell and Coleham, have a history of flooding. Extensions there may need a flood risk assessment, raised floors and resilient materials, which add to fees and build costs.
Historic centre
Shrewsbury's town centre has a large conservation area and many listed buildings. Work on or near these properties needs careful, sympathetic design and may need listed building consent.
Rural surroundings
Villages around Shrewsbury have larger plots and older brick and stone houses. Longer drives for trades and deliveries, and matching older materials, can push quotes up compared with the town's suburbs.
Planning in Shrewsbury
Planning and building control here are handled by Shropshire Council. Many single storey rear extensions and loft conversions in England fall under permitted development, but conservation areas and Article 4 directions remove some of those rights, so check with the council before you commit to drawings.
Prices by postcode district in Shrewsbury
A 20m² single storey rear extension and a two-bedroom dormer loft with an en-suite, priced for each district. All figures include VAT and fees.
| Postcode | Area | Single storey, 20m² | Dormer loft | Index |
|---|---|---|---|---|
| SY1 | Shrewsbury | £54,000 to £62,000 | £48,500 to £56,500 | 1.00 |
| SY2 | Shrewsbury | £54,000 to £62,000 | £48,500 to £56,500 | 1.00 |
| SY3 | Shrewsbury | £54,500 to £62,500 | £49,000 to £57,500 | 1.01 |
Shrewsbury: common questions
How much does an extension cost in Shrewsbury?
A 20m² single storey rear extension in Shrewsbury typically costs £54,500 to £62,500 including VAT, around £2,900 per square metre. A mid-spec 24m² kitchen extension with bifolds is around £72,500 to £83,000.
Do I need planning permission in Shrewsbury?
Many single storey rear extensions are permitted development. The town centre conservation area, listed buildings and flood zones add extra steps. Shropshire Council can confirm, or you can apply for a lawful development certificate.
How much is a loft conversion in Shrewsbury?
A dormer loft conversion with two bedrooms and an en-suite typically costs £49,000 to £57,500 including VAT. A two-room Velux conversion is usually around £35,000 to £41,000.
Can I extend a house near the river in Shrewsbury?
Often, yes, but you may need a flood risk assessment and a design with raised floors or flood-resilient materials. Check the flood map for your address before commissioning drawings.