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Loft conversions

Turn the loft into the best room in the house.

Verified loft specialists for dormer, mansard, hip to gable and Velux conversions. You choose who quotes; exclusive contact.

01

What "Loft Conversion" covers

Verified specialists who handle the full scope, not one slice of it. You choose who quotes; one appointed builder, one point of contact.

Dormer (rear, side, full-width)

Mansard: typical for terraces in conservation areas

Hip to gable: for semis and detached

Velux / rooflight: quickest, cheapest route

02

What we typically include, and don't

A clear scope is the difference between a smooth project and an expensive argument.

Included

In scope
  • Drawings, building regs and structural design
  • Insulation, services, finishes and en-suite
  • Party-wall agreements where required (terraced / semi-detached)

Typically not included

Priced separately
  • High-end built-in joinery beyond a standard fit-out
  • Major roof reconstruction beyond the planned conversion
  • Garage or external works (priced separately)

03

Realistic cost range

Loft conversions typically £45k to £110k.

The Cost Planner gives you a postcode-adjusted range with a clear breakdown of what’s included. Use it before you talk to a builder so you walk in knowing your numbers.

Open the Cost Planner

04

Common questions

Direct, plain answers. No marketing copy.

How much does a loft conversion cost?

A dormer conversion typically lands between £45k and £80k including drawings, build and an en-suite. Mansard and hip to gable are usually more, at £60k to £110k. Use the Cost Planner for a postcode-adjusted range.

Will I need party-wall agreements?

If you share walls with neighbours (typical of terraced and semi-detached), yes. The Party Wall etc. Act 1996 sets out the process. Most loft specialists handle the paperwork as part of pre-build.

How long does a loft conversion take?

Dormer conversions typically take 8 to 12 weeks on site. Mansard and hip to gable run 10 to 16 weeks. Add 6 to 10 weeks for design and planning before work begins.

By area

Public-record profiles of building firms that have not joined Compare Builders yet, by county. Each page is unclaimed and unverified until the business claims it.

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