House extensions in Oswestry
From a small utility to a two-storey addition, we take on house extensions throughout Oswestry, starting with a free visit and a planning check.
- Postcode districtsSY11
- Price regionWest Midlands (×0.97)
- Planning rulesEngland
- Site visitFree, no obligation
Planning rules in Oswestry
In England a single-storey rear extension can usually go up to 3 m beyond the original rear wall of a semi-detached or terraced house, or 4 m on a detached house, without a planning application, provided it is no more than 4 m high, keeps eaves to 3 m within 2 m of a boundary and, with other buildings, covers no more than half the land around the original house. The larger home extension prior approval scheme raises those depths to 6 m and 8 m, with neighbours notified and a 42-day decision.
In England a two-storey rear extension is permitted development only if it projects no more than 3 m from the original rear wall, sits at least 7 m from the rear boundary, matches the roof pitch and uses obscure, non-opening side windows upstairs. Most two-storey extensions therefore go through a householder planning application, which costs £548 from 1 April 2026 and normally takes about 8 weeks.
In a conservation area, national park, National Landscape, the Broads or a World Heritage Site the permitted development limits are tighter (no side or two-storey extensions without an application). Listed homes need listed building consent, and if permitted development rights have been removed, any extension needs an application.
Building regulations approval is separate from planning. In England you can use the council's building control team or a registered building control approver; a full plans application gets the drawings checked before work starts, and the inspector signs the work off with a completion certificate.
Applications are decided by the local planning authority (your district, borough or unitary council).
Choosing the right extension in Oswestry
The West Midlands has a large stock of 1930s and post-war semi-detached houses, which are well suited to rear, side and over-garage extensions, plus Victorian terraces in the older inner areas.
The types we would usually look at first for a home in Oswestry are double-storey extensions, extensions over a garage and kitchen extensions, depending on the garden and how the house is laid out.
Areas we cover around Oswestry
We cover Oswestry and the postcode districts SY11. We also work in nearby Shrewsbury (16 miles), Market Drayton (25 miles), Wellington (25 miles), Telford (28 miles), Bridgnorth (35 miles). Chester, in Cheshire, is roughly 24 miles from Oswestry and also on our list.
Guide prices for Oswestry
Use these Oswestry guide prices to sense-check a budget; the guide-price tool narrows them to your own size, and the site visit turns them into a written figure.
| Extension type | Example size | Standard spec (inc VAT) |
|---|---|---|
| Extensions over a garage | 12 m² | £24,000 – £31,500 |
| Wraparound extensions | 25 m² | £55,500 – £70,500 |
| Single-storey rear extensions | 20 m² | £39,500 – £50,500 |
| Kitchen extensions | 20 m² | £40,500 – £51,500 |
| Conservatory replacement extensions | 14 m² | £29,000 – £37,500 |
| Orangery extensions | 16 m² | £43,000 – £54,500 |
All extension types we build in Oswestry
- Conservatory replacement extensions · from £19,000
- Porch extensions · from £3,850
- Bungalow extensions · from £25,000
- Home office extensions · from £15,500
- Timber frame extensions · from £20,000
- Annexe extensions · from £53,000
- Flat roof extensions · from £20,000
- Side return extensions · from £17,000
- Double-storey extensions · from £36,500
- Wraparound extensions · from £34,500
- Extension plans and drawings · from £1,150
- Building regulations for extensions · from £850
- Pitched roof extensions · from £21,500
- Single-storey rear extensions · from £20,000
- Side extensions · from £21,000
- Utility and boot room extensions · from £13,500
- Kitchen extensions · from £26,000
- Bedroom extensions · from £25,000
- Orangery extensions · from £29,000
- Extensions over a garage · from £23,000
- Glass box extensions · from £29,000
- Planning permission for extensions · from £300
Free site visit
A designer visits, takes measurements and photos, and discusses layouts, budget and timing with you.
Design and approvals
We draw the design, agree it with you and handle planning or permitted development checks and building regulations.
Fixed written price
You receive a written, itemised price and programme. Nothing starts until you are happy with it.
Build and sign-off
The build is managed from start to finish, inspected at each stage and signed off on completion.
Questions about extensions in Oswestry
How much does an extension cost in Oswestry?
Using our West Midlands factor (×0.97), a standard-spec single-storey extension of 20 m² is a guide £39,500 to £50,500 including VAT, and a 32 m² two-storey extension £55,500 to £73,000. Your written price follows the survey.
Do I need planning permission for an extension in Oswestry?
Not always. It depends on the size, position and your property's history. Many single-storey rear extensions in England are permitted development or can use prior approval.
How long does an extension take in Oswestry?
Usually 2 to 4 months of design and approvals, then 10 to 16 weeks on site for a single-storey extension or 16 to 24 weeks for two storeys.
Do you cover all of Oswestry?
Yes, including the surrounding parts of Shropshire. Site visits are free and there is no obligation.
Book a free site visit in Oswestry
We will measure up, check the planning position and give you honest guide figures.
- Free, no-obligation site visit
- Planning route checked before you spend on drawings
- Written price once the design is agreed
- Building control sign-off at the end
Prefer to talk? Call 0800 088 6341 or .
Book a free site visit
Tell us a little about the project and we will arrange a time.