Side extensions for homes in Ross-on-Wye
A side extension in Ross-on-Wye starts with the right design and the right approval route. We take care of both, then build it with our own project management.
- Guide price in Ross-on-WyeFrom £21,000 inc VAT
- PlanningSingle storey can be permitted development
- Build time10–18 weeks on site
- Postcode districtsHR9

Planning rules that apply in Ross-on-Wye
In England a single-storey side extension can be permitted development if it is no more than 4 m high and no wider than half the width of the original house. Two-storey side extensions, and any side extension on designated land such as a conservation area, need a householder planning application.
Before any drawing is finalised we check whether the house is listed, in a conservation area or subject to an Article 4 direction.
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).
Included in a typical project
- New openings through the side wall
- Survey, design and street-view drawings
- Windows, doors and finishes to match
- Foundations near boundaries and any drains
- Structure, roof tied into the house
- Planning route checked or application made
What should I budget for a side extension in Ross-on-Wye?
These guide figures apply our West Midlands adjustment (×0.97) to national rates. They include VAT at 20% and cover the build itself; design and council fees are listed separately.
Typical rates in Ross-on-Wye: £1,700 to £3,300 per m² including VAT, depending on specification.
| Size | Essential | Standard | Premium |
|---|---|---|---|
| 2.5 m × 5 m 12 m² | £21,000 – £26,000 | £23,500 – £31,000 | £30,000 – £40,000 |
| 3 m × 6 m 18 m² | £30,500 – £37,000 | £35,500 – £46,500 | £45,000 – £59,500 |
| 3 m × 8 m 24 m² | £40,500 – £49,000 | £47,500 – £62,000 | £60,500 – £79,500 |
Want a range for your exact size? The guide-price tool takes about a minute.
Local to Ross-on-Wye
Across HR9, we can visit, measure and advise. Neighbouring towns we cover include Ledbury (11 miles), Hereford (12 miles), Leominster (24 miles).
Just over the Gloucestershire border, Gloucester is about 15 miles away. 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.
What happens next
Site visits are free and there is no obligation. Where drawings are needed, the design stage is priced in writing before it starts.
Free site visit
A designer visits, takes measurements and photos, and discusses layouts, budget and timing with you.
Design and approvals
Drawings are prepared and agreed with you, then submitted for the right planning route and building regulations approval.
Fixed written price
With the design and specification agreed, you get a fixed written price and a start date.
Build and sign-off
Work is carried out to the agreed programme, inspected by building control and signed off at the end.
Common questions in Ross-on-Wye
Will my neighbours in Ross-on-Wye be involved?
If a planning application or prior approval is needed, the council notifies neighbours. If the work is on or near a shared boundary, party wall notices may also be needed.
Can I see a price before committing to anything?
Yes. The guide prices on this page are adjusted for Ross-on-Wye, and the guide-price tool gives a range for your own size. After the survey you get a written price before anything is agreed.
Do you cover all of Ross-on-Wye?
Yes. We cover Ross-on-Wye and the surrounding parts of Herefordshire. Site visits are free and there is no obligation.
How close to the boundary can I build?
It depends on height. In England, within 2 m of a boundary the eaves must not exceed 3 m under permitted development. Building on the boundary is possible but brings party wall and maintenance access issues we plan for.
Can I build a side extension without planning permission?
In England a single-storey side extension can be permitted development if it is no more than 4 m high and no wider than half the width of the original house. Two-storey side extensions, and any side extension on designated land such as a conservation area, need a planning application.
Book a free site visit in Ross-on-Wye
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.