Question 1: Floor area

(A) Enter here the floor area of the proposed extension/new build

Size: Square Metres Square Feet

(B) Enter here the floor area of the associated renovation works

Size: Square Metres Square Feet

Question 2: Construction type

Tick the box which best describes the type of construction of your new extension/new build:

Simple construction, no significant structural issues, budget spec

Standard construction, some structural or site related complexity

High quality construction, high quality materials, challenging structures or site conditions

Question 3: Finish

Tick the box which best describes the overall quality of finish for the extension and renovation works:

Painting and flooring only

Budget finishes, some simple or minor alterations

Average finishes to include some structural work, plumbing, electrical and decoration

Average finishes as above to include new kitchen

Some luxury finishes, extensive tiling, hardwood floors, handmade joinery

Luxurious finishes, stone flooring with underfloor heating, designer bathroomware

Question 4: Green energy

Tick the relevant boxes for inclusion of renewable/green energy in your project:

Solar thermal panels 5 square metres

High performance thermal glazing

Mechanical heat recovery ventilation system

Home energy management systems

High performance insulation and air tightness

Heat pumps

Photovoltaic solar panels 1kW

Rainwater harvesting, storage and recycling

Wind turbine 1kW

Calculate total cost project

Press the “calculate” button to estimate the total construction costs:

Please note that the above figures are indicative only and will vary for each individual project. The budget should not be relied upon without further review by a qualified professional.