Extensions.

How much will it cost?

We aim to make sure that you have as clear an idea of the costs associated with your project as early as possible. Robust checks are carried out throughout the design process to keep to your budget. One of our first steps will always be to discuss how much you are willing to spend. From there, we will make sure that your ambitions are achievable and that the project is a sound investment.

Case Study 1 - Sunroom

Included: design and permission pack, groundworks, timber frame, roughcast external walls, single ply roof, plasterboard, skim, plaster & decorations, 1x window, 1x french door, 1x radiator, 4x led spotlights, 2x sockets, 1x smoke detector, UPVC fascia boards and soffit.

Cost Breakdown

Profesional fees
£4,928
Construction cost area of build 4.0m x 4.0m
£36,440
VAT on construction cost 20% of above figure
£7,288
Total Project Cost
£48,656

Excluded: slapping to existing building, kitchen, external hard landscaping, alterations / decoration to existing house, finished floor coverings (i.e carpet)

Case Study 2 - Medium Extension

Included: design and permission pack, groundworks, timber frame, roughcast external walls, single ply roof, plasterboard, skim, plaster & decorations, slapping to existing building, 1x window, 1x french door, 1x radiator, 6x led spotlights, 3x sockets, 1x smoke detector, UPVC fascia boards and soffit.

Cost Breakdown

Professional fees
£5,023
Construction cost of build 6.0m x 4.0m
£46,851
VAT on construction cost 20% of above figure
£9,370
Total Project Cost
£61,244

Excluded: kitchen, external hard landscaping, alterations / decoration to existing house, finished floor coverings (i.e carpets)

Case Study 3 - Large Kitchen Extension

Included: design and permission pack, groundworks, timber frame, roughcast external walls, single ply roof, plasterboard, skim, plaster & decorations, slapping to existing building, steelwork within roof of extension, 2xwindow, 1x french door, 2x radiator, 8x led spotlights, 3x sockets, 1x smoke detector, UPVC fascia boards and soffit.

Cost Breakdown

Professional fees
£5,212
Construction cost of build 7.0m x 5.0m
£58,777
VAT on construction cost 20% of above figure
£11,756
Installation of kitchen (supplied by client) prov cost for plumbing and electrical
£3,600
Total Project Cost
£79,345

Excluded - kitchen, external hard landscaping, alterations / decoration to the existing house, finished flooring coverings (i.e carpets)

Our 6-Step Extension Process

Our process is designed to give you a clear, structured route from first conversation to completed extension, with greater cost certainty built in before the build begins.

1
Initial Consultation & Feasibility

We discuss your home, your goals, how you want to live, your budget expectations and what may be possible.

2
Design & Planning Review

We look at the design approach, planning considerations and the professional input your project may require.

3
Technical Detail & Building Warrant

Architectural and engineering details are developed to support the building warrant process and prepare the project for accurate pricing.

4
Bill of Quantities Prepared by Quantity Surveyor

Our Quantity Surveyor prepares a Bill of Quantities, setting out the measured work and scope required for the project.

5
Cost Certainty Pricing

Once the approved drawings and Bill of Quantities are in place, we can provide cost certainty pricing based on the agreed scope of work. This means your project is priced properly, using detailed information rather than assumptions or rough estimates.

6
Programme Agreed & Build Managed

Your Contracts Manager agrees the programme, coordinates the trades and manages the build through to completion.

Call us now for a FREE feasibility study and budget cost analysis

0131 510 9390