Loft conversions Thames Valley Berkshire

Loft Conversions
Thames Valley

Transform your unused loft into a bedroom, bathroom or home office. Fixed-price quotes from £27,500. Dormer, hip-to-gable, Velux and Mansard specialists.

Which Type Suits Your Property?

Velux / Rooflight

Simplest and most affordable. Roof windows installed without changing the roof shape. Ideal for properties with good headroom.

From £27,500

Dormer

A dormer window projects vertically from the sloping roof creating additional headroom and floor space. Most popular for terraced homes.

From £40,000

Hip-to-Gable

The sloping hip end of the roof is replaced with a vertical gable wall. Common for end-of-terrace and semi-detached homes.

From £45,000

Mansard

Maximum space conversion. The roof slope is altered to near-vertical creating a full additional storey. Common in urban areas.

From £55,000

Complete Package, Fixed Price

  • Free loft survey and headroom assessment
  • Structural engineer calculations
  • Building regulations application and sign-off
  • Party wall notices where required
  • Steel beam installation where required
  • Insulation to current building regulations standard
  • Staircase design and installation
  • Dormer construction, roofing and weatherproofing
  • First and second fix electrics
  • En-suite bathroom installation if required
  • Plastering, flooring, joinery and decoration
  • Weekly photo progress reports

Loft Conversion Questions

Does my property need planning permission?+
Most loft conversions fall under permitted development provided the volume added does not exceed 40m³ for terraced homes or 50m³ for detached and semi-detached. We assess this at the free survey.

How do I know if my loft is suitable?+
The minimum recommended headroom is 2.2 metres from floor joist to ridge. We measure this at the free survey. Most standard houses built before 1990 in Berkshire have suitable headroom.

How long does a loft conversion take?+
A Velux conversion takes 4–6 weeks. A standard dormer takes 8–12 weeks. Hip-to-gable conversions run 10–14 weeks.

What does a loft conversion cost in Berkshire?+
Velux conversions from £27,500. Dormer conversions from £40,000. Hip-to-gable from £45,000. Mansard from £55,000. All prices are fixed and include building regulations, structural engineer and all labour and materials.

Can a loft conversion include a bathroom?+
Yes. An en-suite bathroom is included in most loft conversions we deliver. We assess the plumbing routing at the survey stage.

Free Loft Survey
& Fixed Quote

Free site visit. Fixed-price quote within 48 hours. No obligation.