Pitched roof extensions across Barry
A pitched roof extension in Barry 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 BarryFrom £20,500 inc VAT
- PlanningWelsh permitted development rules (rear up to 4 m)
- Build time10–16 weeks on site
- Postcode districtsCF62, CF63
Guide prices for Barry
Labour and material costs vary across the UK, so for Barry we use our Wales factor (×0.93). The ranges include VAT and exclude design, structural and council fees.
Typical rates in Barry: £1,720 to £3,260 per m² including VAT, depending on specification.
| Size | Essential | Standard | Premium |
|---|---|---|---|
| 3 m × 4 m 12 m² | £20,500 – £24,000 | £23,500 – £31,000 | £30,500 – £39,500 |
| 4 m × 5 m 20 m² | £34,000 – £40,000 | £39,500 – £51,500 | £51,000 – £65,500 |
| 5 m × 6 m 30 m² | £51,500 – £60,000 | £59,500 – £77,000 | £76,500 – £98,000 |
Want a range for your exact size? The guide-price tool takes about a minute.
Local to Barry
Site visits are available across Barry (CF62, CF63). Neighbouring towns we cover include Penarth (5 miles), Cardiff (7 miles), Cowbridge (8 miles).
In Wales, terraced houses with rear offshoots are common in the towns, while detached houses and bungalows dominate in rural areas.
Do I need planning permission in Barry?
In Wales a single-storey rear extension can usually project up to 4 m beyond the rear wall without a planning application, if it is no more than 4 m high, keeps eaves to 3 m and overall height to 4 m within 2 m of a boundary, and covers no more than half the land around the original house. Wales has no larger home extension prior approval scheme.
The planning position for a specific Barry address depends on its history and any designations, which is why we check it at the first visit.
The Party Wall etc. Act 1996 applies in Wales as in England: notice must be served before work to a shared wall, building on the boundary, or excavating close to a neighbour's foundations.
Applications are decided by the local planning authority (your county or county borough council, or the national park authority).
What we take care of
- Roof design matched to the existing pitch and tiles
- Vaulted ceilings or flat ceilings with storage above
- Lead or proprietary flashings to the main wall
- Insulation to current building regulations
- Roof windows positioned for light and ventilation
From first visit to completion
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
We visit your Barry home, measure up, talk through what you want and check the planning position.
Design and approvals
Once the layout is agreed, we deal with the council: planning permission or written confirmation that none is needed, plus building control.
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.
Pitched roof extension questions answered
Do you cover all of Barry?
Yes. We cover Barry and the surrounding parts of South Glamorgan. Site visits are free and there is no obligation.
How long does a pitched roof extension take to build in Barry?
On site, typically 10 to 16 weeks once approvals are in place. Before that, allow 6–12 weeks design and approvals.
Will my neighbours in Barry be involved?
If a planning application 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 have a vaulted ceiling?
Yes. A vaulted ceiling with roof windows is one of the main reasons to choose a pitched roof. It needs insulation between and under the rafters to meet the building regulations.
Is a pitched roof better than a flat roof?
Neither is better in all cases. Pitched roofs blend with traditional houses and shed water quickly; flat roofs give more headroom and suit modern designs and lanterns.
Book a free site visit in Barry
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.