So that you can get a reasonable idea of the budget you would need to make allowance for, the following are approximate prices based on the average loft conversion projects carried out on properties in good condition in recent years.

Please note that every single project is quoted individually, and prices vary according to size, condition of the property, cost of selected materials and so forth.

Example 1: 1: 5m x 3 Extension

  • Option 1 – Flat roof Foundations, Walls flat roof removal of doors in to the existing property. £25,000 + VAT
  • Option 2 – Flat roof with lantern light Foundations, Walls flat roof, Removal of doors in to the existing property. £27,000 + VAT
  • Option 3 – Flat roof with lantern light and large opening, Foundations, Walls flat roof removal of doors in to the existing property. £30,000 + VAT

Example 2: 7m x 3 Extension

  • Option 1 – Flat roof Foundations, Walls flat roof removal of doors in to the existing property. £28,000 + VAT
  • Option 2 – Flat roof with lantern light Foundations, Walls flat roof, Removal of doors in to the existing property. £29,000 + VAT
  • Option 3 – Flat roof with lantern light and large opening, Foundations, Walls flat roof removal of doors in to the existing property. £32,000 + VAT

Other options available include:

  • Mansard roof, Lean to roof, Pitched Roof
  • Bi fold doors, French doors with side lights
  • Roof lights, Velux windows

What’s included in our price?

  • Full survey, working drawings with structural calculations

  • Inspector’s inspection fee, full Building Regulations approval

  • Foundation up 1m

  • Brick and block work cavity wall

  • Floor Concrete and screed

  • Roof

  • UPVC French doors and window, fascia and soffits

  • Removal of existing windows and doors to leave opening

  • Carpentry 2nd fix (skirting, architraves, doors etc.)

  • Plaster finish

  • Waste removed from site, leaving the premises clean and tidy

Electrics

  • 4 x double sockets

  • 2 x Pendant lights

  • 2 x smoke detectors

  • Alterations to existing electrics to accommodate building works

  • Testing & certification

All electrical works are carried out in strict accordance with BS7071 the IEE Wiring regulations and are test and certificated in accordance to the part P building regulation scheme

Plumbing

  • Supply and fit one radiator with thermo static valves

Have a question about Extensions?

Book a consultation about your specific home extension requirements