Mansard loft conversions in Builth Wells

Covering Builth Wells

Alongside Builth Wells, we also cover Llandrindod Wells, Brecon (14 miles to the south) and Newtown.

Because Powys covers a wide area, we confirm availability after the first call and include any travel costs in the written quote rather than adding them later.

Homes in Powys

Housing in Wales ranges from terraced streets in the valleys and older industrial towns to stone-built homes in rural areas and modern estates around the cities.

What is included in a mansard loft conversion in Builth Wells?

A mansard loft conversion replaces one or both slopes of a roof with a near-vertical wall, typically at 70 degrees, with small dormer windows set into it. It creates almost a full extra storey and is common on terraced houses in towns and cities, particularly in London.

Planning application to local design guidance
Slate cladding and lead-clad dormers
En-suite, electrics and fire safety

How much should I budget for a mansard loft conversion?

What mansard loft conversions typically cost. These are guide ranges; the written quote for your house replaces them.

Mansard loft conversions	Guide price incl. VAT
Rear mansard	£65,000 to £85,000
Front and rear (double) mansard	£80,000 to £110,000

Do you need permission for a mansard loft conversion in Builth Wells?

In Wales the planning rules, including what counts as permitted development, are set by the Welsh Government, and Welsh building regulations differ in places from England’s. We check both against your house before drawings are finalised, and handle party wall notices where needed.

This needs full planning permission from your council in Wales. We prepare and submit the application and deal with the planning officer on your behalf.

What should I think about before starting?

Council design guides often require natural slate and lead.
Scaffolding and a temporary roof are usually needed.

What are the steps?

Start with a conversation. A short call or the online form is enough for us to understand what you want to build.
We visit and measure. A surveyor checks the house, the boundaries and the ground, and discusses what is realistic.
Drawings, approvals, written quote. We prepare the design, apply for the approvals it needs, and give you a fixed price in writing.
Build and hand over. Our teams build to the programme, building control inspects, and you get the completion paperwork at the end.

Your questions answered

Does a mansard need planning permission?

Almost always, because it changes the roof profile.

How long does a mansard take?

Around 10 to 14 weeks on site after planning approval.

How do I get a price for mansard loft conversions in Builth Wells?

Use the guide price tool for a ballpark figure, then book a visit for a fixed written price for the agreed specification.

Mansard loft conversions near Builth Wells

Learn more about mansard loft conversions, or see every project we cover in Builth Wells.