Two-storey side extensions in Worcestershire
If you're in Worcestershire and weighing up a two-storey side extension, start here: guide costs for the West Midlands, the approvals you'll need and how we work.
Worcestershire at a glance
- Nation
- England
- Price region
- West Midlands
- Postcode areas
- B, DY, WR
- Towns covered
- 8 listed below, plus surrounding villages
- Approval route
- Planning permission is needed: in England, permitted development only allows single-storey extensions to the side.
- Site visits
- Free, no obligation
What a two-storey side extension involves
A two-storey side extension suits a detached or semi-detached house with a side garden, driveway or garage wide enough to build on. You get a design that sits comfortably on the street, a planning application or permitted development check depending on your nation, structural design, building regulations approval and the build itself. We manage the whole process, and the work is carried out by vetted teams working under S&K.
Towns in Worcestershire include Worcester (WR1), Redditch (B48), Kidderminster (DY10), Great Malvern (WR8), Bromsgrove (B60) and Evesham (WR10). If yours isn't listed, we still cover it.
Guide price in the West Midlands
Our guide for the West Midlands is £2,050–£2,750 per m² including VAT. On a project with a 3 m × 7 m footprint on two floors (42 m² of new floor space), that puts a two-storey side extension in Worcestershire at roughly £86,000–£115,500. Kitchens, bathroom fittings and flooring are priced separately so you can compare like with like.
| Spec | Per m² | Typical project |
|---|---|---|
| Essential | £1,890–£2,530 per m² | £79,000–£106,500 |
| Standard | £2,050–£2,750 per m² | £86,000–£115,500 |
| Premium | £2,460–£3,300 per m² | £103,500–£138,500 |
Rules in England
In England, a two-storey side extension always needs householder planning permission, because permitted development only allows single-storey extensions beyond a side wall. The fee is £548 (or £575 for applications made from 8 December 2026), and councils should decide within 8 weeks of validation. Expect them to look at set-back, roof height, gaps to the boundary and the effect on neighbours.
Approval in England: Householder planning application: £548 (or £575 for applications made from 8 December 2026). Lawful development certificate: £274 (about £288 for applications from 8 December 2026). Councils should decide householder applications within 8 weeks of validation.
Building regulations: Building regulations approval (full plans recommended) from the council or a registered building control approver, with a completion certificate at the end.
The Party Wall etc. Act 1996 applies, so notices may be needed for work on or near a shared wall or boundary.
Getting the design right
Set-down and set-back
Councils usually want a two-storey side extension to look subordinate to the house. Setting the front wall back from the main front and dropping the ridge slightly below the main roof helps it read as an addition, and is often expected in local design guidance.
Matching the ridge and roof
A hipped house usually needs a hipped extension roof, and a gabled house a gable. Matching the pitch, tiles, ridge detail and brick bond is what makes a side extension look original rather than added, and councils look closely at it on a front-facing addition.
How we work in Worcestershire
Start at your house
We come to your home in Worcestershire, measure up, check the ground floor walls and roof structure, and note anything near the boundaries.
Get it approved
Once you're happy with the design we submit it to the council for Worcestershire and deal with any questions from the planning officer.
Price it properly
Once the engineer's calculations are in, we fix the build price in writing, with a clear list of what's included.
Finish and certify
Second fix, plastering and making good, then building control's final inspection and the completion paperwork.
Towns we cover in Worcestershire
Two-storey side extensions in Worcestershire: questions
How much does a two-storey side extension cost in Worcestershire?
In the West Midlands our guide is £2,050–£2,750 per m² including VAT, so about £86,000–£115,500 for a 3 m × 7 m footprint on two floors (42 m² of new floor space). Essential and Premium specs move that by roughly 8% down or 20% up.
Can I build a two-storey side extension over my driveway?
Yes, if the drive is wide enough for a useful room and the council accepts the design. You may lose off-road parking, which some councils weigh up, and the foundations need to suit the ground below. We check parking, drains and meter positions at the free site visit before any drawings are prepared.
Will I need planning permission in Worcestershire?
Worcestershire is in England. Planning permission is needed: in England, permitted development only allows single-storey extensions to the side.
Neighbouring areas
- Two-storey side extensions in the West Midlands
- Two-storey side extensions in Herefordshire
- Two-storey side extensions in Warwickshire
- Two-storey side extensions in Gloucestershire
All extension services in Worcestershire · About two-storey side extensions
Ready to see what a second storey could do for your home?
Book a free site visit. We'll look at your house, talk through options and explain the approvals you'd need, then price the design stage in writing.