What does building a new contemporary house, extension or a full refurbishment cost in London?

Different clients have different requirements. Location is also essential for projects such as Greater London tends to be a bit more costly than the rest of the UK. The cost will vary from project to project. We will guide you through the project, enabling you to make informed decisions and reduce project costs.

Furthermore, keep in mind various consultants will be hired, which will add 10% to 20% to the construction cost (including architect fees).

Here are the features that drive a design's cost and how to classify basic-medium to high-end.

Basic-Medium quality construction cost:

-New Build: The price range is between £2,200.00 and £2,400.00 per m2.

-Extension: The price range is between £2,800.00 and £3,200.00 per m2.

-Full refurbishment or conversion of existing: The price range is between £1,000.00 and £1,300.00 per m2.

Basic kitchen layout, moderate-quality German appliances, bathrooms Include small to medium rectified tiles, occasionally medium-range sanitary ware and concealed WC cisterns, and non-customizable accessories.

Generally, the finish quality is medium range, Storage and Joinery have customized features, including common-size unattached doors, built-in wardrobes, and storage.

External doors and windows involve basic fenestration with common-size windows and door openings. One or two large glazing openings related to an open-plan layout.

Overall Technical Complexity involves common technical solutions.

Medium-High quality Construction Cost:

-New Build: The price range is between £2,500.00 and £3,200.00 per m2.

-Extension: The price range is between £3,200.00 and £3,800.00 per m2.

-Full refurbishment or conversion of existing: The price range is between £1,400.00 and £1,800.00 per m2.

Kitchens include Mid-high range quality German appliances, combined island stones on Countertops, and Splash-backs.Bathrooms involve medium to large format porcelain tiles, alcoves and bespoke joinery storage items, mid-range sanitary ware, and concealed WC cisterns.

Finishes generally are medium to high quality, including engineered wood floors and medium-large porcelain tiles, and sometimes externally, it may specify special brick and floor finishes.

Storage and Joinery bespoke design, wardrobes and some doors can be full height, from floor to ceiling, and sometimes special skirting and architraves can be installed .

Fenestration, external doors, and windows include large size windows and door openings. Often large, glazed windows with mid-high-quality aluminium frames.

Interior Features: Recessed ceiling LED strip lighting and exterior features might include linear hidden drains, concealed gutters, pipes, and a basic landscaping design with planting and external lighting.

The heating system often includes a gas combi-boiler or air-sourced heat pump system and water underfloor heating at ground floor level.

High-end quality Construction Cost:

-New Build: The price range is between £3,300.00 and onwards.

-Extension: The price range is between £3,800.00 and onwards.

-Full refurbishment or conversion of existing: The price range is between £1,800.00 and onwards.

The kitchen involves a large layout and features high-end appliances, bespoke stone composite worktops, islands, and splash-backs.

Bathrooms can include large format porcelain tiles or real stone, lighting features are coordinated with bespoke alcoves and joinery, high-range sanitary ware, wall-mounted tabs, ceiling-mounted showers, and concealed WC cisterns.

Finishes generally consist of medium-high range quality finishes, solid and high-quality hardwood flooring, large porcelain tiles, and externally special brick and other materials.

Joinery design, doors, and wardrobes are purpose-made and have a full height from floor to ceiling, doors generally have hidden hinges, special architraves, and skirtings.

Fenestration Includes large-size windows-openings with high-quality minimal aluminium frames, generally, there is more allowance for glazing.

Interior Features such as special skirting, ¨feature¨ walls with brick, stone, or wood finish that will match doors and other joinery accessories. Also, it features a full lighting design completely.

Externally linear hidden drains, concealed pipes, and gutters with custom landscaping design and external lighting.

Heating by air or ground source heat pump and might include heat recovery ventilation.

How VAT works in the construction industry?

Most supplies in the design and construction sectors are 'standard rated'; therefore, VAT is applied at the prevailing rate. It is possible to charge a reduced rate or even free for certain types of work. Here is the information below:

Construction reduced rates of VAT might apply to:

The reduced VAT rates might apply when converting a building into a house or flat, supplying and installing energy-saving equipment, heating system, and security goods, and renovating or altering an empty house or flat in case of grant funding.

Construction zero rate of VAT applies:

This rate applies to constructing a new house or flat, converting a residential building into a household use, supplying or installing goods, and making adjustments for a disabled person in their home.