House extension

There are many different options when you’re looking to extend your home’s living space. When someone mentions a home extension, they usually mean a single or multi-storey extension, as defined by Scotland’s building standards. But there are plenty of other options worth considering when adding to your home’s square footage, and it all comes down to personal preference. One alternative is a garage conversion, which can be 5-10 times cheaper than a traditional extension. Or you might consider a conservatory option such as the Livinroof or the Ultraroof, both of which offer an extension-like roof while retaining the natural-light benefits of a conservatory.

The cost of your home extension is highly dependent on your specification, with a 20m² single-storey extension starting from approx. £56,000, with a square-metre price from £2,800-£3,200, although this price can rapidly increase if you choose more expensive materials or complex architectural designs.

The main factors, ranked by where your money goes:

• Masonry & Structure (15%)
• Groundworks & Foundations (14%)
• Roofing (10%)
• Windows & External Doors (10%)
• Joinery (8%)
• Plumbing & Heating (6%)
• Plastering (6%)
• Structural Steel (5%)
• Electrical Installation (5%)
• Decoration & Finishes (4%)
• Drainage (4%)
• Project Management (4%)
• Company Overheads & Profit (4%)

Every extension we build follows a clear, structured process designed to keep you informed and in control from start to finish:

1. Accept your quotation – Sign and return your quotation and contract documentation. Once received, we’ll confirm your order and request the agreed deposit payment to secure your project.
2. Architectural design – Your project will be passed to our appointed architectural designer, who will prepare the necessary drawings and documentation based on the agreed proposal.
3. Technical home survey – One of our experienced surveyors will carry out a detailed site survey to confirm all dimensions, assess the existing construction and identify any structural or technical requirements before the drawings are finalised.
4. Drawings approved by customer – The proposed drawings will be issued to you for review and approval. Should you wish to make any amendments, these can normally be incorporated before submission to the Local Authority.
5. Submitted to council – Once approved by you, the architectural drawings will be submitted to your Local Authority for Building Warrant approval. Should any amendments be requested by Building Standards, these will be addressed before the warrant is issued.
6. Materials ordered & installation scheduled – Once your Building Warrant has been approved and returned, we will finalise the technical specification, order all required materials and schedule your build.
7. Construction & project completion – Your extension will be built by our experienced construction teams in accordance with the approved drawings and Building Warrant. Throughout the project, your Project Manager will remain your main point of contact and will keep you updated on progress.
8. Completion certificate – Following completion of all works and receipt of the final balance, we will submit the necessary completion documentation to your Local Authority to obtain your Building Completion Certificate, formally confirming that the works comply with the approved Building Warrant.

Please note: Timescales are typical and may vary depending on Local Authority approval times, architectural amendments, structural engineering requirements, material availability and weather conditions.