New builds, extensions and testing, Powys
Ventilation for new builds, extensions and lofts in Powys
Part F designs, MVHR or extract installs and the commissioning paperwork building control needs, across Powys.
- From £4,700 inc VAT per home
- Free survey
New homes, extensions and loft conversions need ventilation that meets the building regulations and is tested before sign-off. We design the system, install it at the right stage of the build, measure the airflows and provide the commissioning information building control asks for.
Every job in Powys gets a written quote before it starts and a commissioning record when it finishes. We cover Newtown and the villages around them.
New builds & extensions in Powys at a glance
- Area
- Powys, Wales
- Towns listed
- 1, largest Newtown
- Postcode districts
- SY16
- Price region
- Wales
- Survey
- Free survey (UK mainland)
How we do it
We work for self-builders, small developers, builders and architects. Fitting ducts at first fix is far cheaper than retrofitting, so it pays to involve us before the ceilings go up.
Extensions and lofts
Extract for new bathrooms and kitchens, background ventilation for new rooms.
Commissioning only
Testing and paperwork for systems installed by others.
MVHR for new builds
Design, first fix, second fix and commissioning for whole-home heat recovery.
Guide prices in Powys
| Work | Guide price |
|---|---|
| MVHR in a new build or full renovation (fitted at first fix), 3 to 4 bedrooms (per home) | £4,700–£7,550 inc VAT |
| Continuous-running extract fan (dMEV) with humidity boost, flow tested (per fan) | £330–£575 inc VAT |
| Airflow testing and commissioning sheet for extract fans (up to 6 fans) (per home) | £140–£280 inc VAT |
| MVHR or MEV commissioning test, every terminal measured and recorded (per system) | £235–£375 inc VAT |
Wales rates shown. Prices include VAT at 20%. The fixed price is confirmed in writing after we have seen the job.
Common reasons people call
- A self-build with an airtightness target
- Ceilings are about to be boarded
- Building control has asked for a ventilation strategy or commissioning sheet
Rules in Wales
Wales has its own Part F ventilation guidance, published by the Welsh Government, and work is checked by building control. We design to the Welsh rates and commission mechanical systems so the results can be recorded.
How the job runs
- Drawings
- Design
- First fix
- Second fix
- Commission
Towns we cover in Powys
Questions about ventilation for new builds, extensions and lofts in Powys
Is the survey free in Powys?
For new installations on the UK mainland, yes. The survey is free and the quote that follows is fixed and in writing. Servicing, testing and repair visits are charged, and we confirm the cost before booking.
How much does MVHR cost in a new build?
For a 3 to 4 bedroom new build, MVHR fitted at first fix usually costs £4,950 to £7,950 including VAT. VAT on new-build work can differ, so we confirm the treatment on your quote.
Can you just test a system someone else installed?
Yes. We can commission and test systems installed by others, and report any issues we find.
Which rules apply to ventilation in Powys?
In Wales, the Welsh Government's own Approved Document F (2022 edition) applies to ventilation in homes, with a new edition taking effect on 4 March 2027. Rented homes must be fit for human habitation under the Renting Homes (Wales) Act 2016, and workplaces must be ventilated under the Workplace (Health, Safety and Welfare) Regulations 1992.
Which towns in Powys do you cover?
All of Powys, including Newtown. If your town is not listed, send the postcode and we will confirm.
Other services in Powys
Get a guide price in two minutes
Answer a few questions for a price range, or send photos and we will come back to you with a written quote.