What is the cost of a Loft Conversion?

How much does a loft conversion actually cost?


Have you viewed our loft conversion gallery?

You will see our quality speaks for itself. View our gallery and if you are still not convinced contact us, we are great at what we do!



Loft conversion types & their cost

The costs below are guidelines only, costs can and will vary from project to project. For your free site survey, written quotation & sketch drawings please contact us today.

L Shape Mansard loft conversion

L Shape Mansard

From £ enquire
L shape mansard loft conversions could provide your home with an extra 410 sq. feet of floor space. Plenty of space for a master bedroom, bathroom and additional bedroom/study!

Get a quote now ›

Hip to Gable loft conversion

Hip to Gable

From £ enquire
Hip to gable loft conversions could provide your home with an extra 410 sq. feet of floor space. Plenty of space for a master bedroom, bathroom and additional bedroom/study.

Get a quote now ›

L Shape Dormer loft conversion

L Shape Dormer

From £ enquire
L shape dormer loft conversions could provide your home with an extra 410 sq. feet of floor space. Plenty of room for a master bedroom, bathroom and additional bedroom/study.

Get a quote now ›

Single Dormer loft conversion

Single Dormer

From £ enquire
Single dormer loft conversions could provide your home with an extra 260 sq. feet of floor space. Plenty of room for a master bedroom and bathroom.

Get a quote now ›

Double Mansard loft conversion

Double Mansard

From £ enquire
Double mansard loft conversions could provide your home with an extra 350 sq. feet of floor space. Plenty of space for two bedrooms and a bathroom.

Get a quote now ›

Single Mansard loft conversion

Single Mansard

From £ enquire
Single mansard loft conversion could provide your home with an extra 260 sq. feet of floor space. Plenty of room for a master bedroom and bathroom.

Get a quote now ›


Costing examples

The cost of a Dormer Loft Conversion

You have an 'average width' 4.8m (16 feet) London Victorian terrace house for example - a loft conversion here to include a full width rear dormer is likely to be in the region of (please enquire) - to include:

  • ‘Drawings'… measured survey, architect consultation and detailed construction drawings
  • Building Regulations
  • Scaffolding - with appropriate temporary weathering as required
  • ‘Building works’...
    • 1st fix work – roof works to include; rear dormer, steel work, new floor, walls, velux window(s), casement windows in dormer, stairs etc.
    • 2nd fix work – insulation, plasterboard, skim coat finish, fire doors, skirting, electrics, radiator(s) etc.
  • 'Bathroom'… services, drainage, plumb in client supplied bathroom suite and tiling

Effectively everything… just a lick of paint and flooring (i.e. carpet) will be required to finish!

The cost of a Velux / Rooflight Conversion

The range of prices you might expect to pay for a velux loft conversion may be be (please enquire) this includes:

  • Construction drawings
  • Scaffolding
  • Steel beams
  • New supporting and bracing rafters
  • Flooring
  • Stairs
  • Velux window
  • Fire doors
  • Insulation, plasterboard and skim coat finish
  • Skirting and architrave
  • Electrics and smoke detectors
  • Radiator

Basically everything but finished flooring (carpet, laminate etc) and decoration.

Please note - we are not interested in 'bodge jobs' or illegal conversions - all projects must be fully compliant with Building Regulations.


Loft conversion costs are guidelines

The costs illustrated above are guide prices. We are sure you can appreciate lofts come in all shapes, sizes and conditions, so costs can and will vary from project to project. For your free site survey, written fixed price quotation and sketch drawings please contact us.


Still not convinced? Compare our prices.

Take a look at the Whatprice online 'forum' to see what other people have been paying for their loft conversions & how we compare…

http://www.whatprice.co.uk (opens in new window)
http://www.whatprice.co.uk/prices/building/loft-conversion-whole-project.html (opens in new window)


Contact us today:

We are Londons best loft conversion company call us now on 0208 166 5145 to discuss your roof light / velux loft conversion project, or Contact us now ›


Why West London trusts us:

  • Pay NO DEPOSIT just 25% end week 1, 2 & 3, 10% end of week 6 & 8 with the final 5% payable upon completion!
  • We are an experienced design & build company
  • We guarantee our builds for 5 years
  • We offer a free survey & advice when you want
  • We invite you to visit previously completed jobs
  • We work to a very high standard
  • We assist in every step of the process
  • We are fully insured
  • We are FMB approved
  • We provide an end to end service
Go to top ›