House Extensions
Extensions are our speciality. From a single storey kitchen extension to a full double storey wraparound, we design, build and finish the whole job.
House Extensions by Gage Construction
Moving house is expensive and stressful. Extending is often the smarter route to the space your family needs, and it adds value to the home you already love. Gage Construction has been building extensions across Lanarkshire for over 30 years, and it is the work we are best known for.
What we do
- Single storey rear extensions
- Double storey extensions
- Side return and wraparound extensions
- Kitchen and open-plan living extensions
- Orangeries and garden rooms
- Porches and front extensions

Fully managed from start to finish
- Drawings, planning and building warrant applications
- Foundations, groundworks and drainage
- Brickwork, blockwork and roofing
- Windows, bi-fold and sliding doors
- Plumbing, heating and electrics
- Plastering, flooring, kitchens and decoration
Every project gets a written fixed-price quotation, a programme before we start and one manager who is your point of contact throughout.
House Extensions: your questions answered
Do I need planning permission for an extension?
Many single storey extensions fall under permitted development, but it depends on size, position and whether the property has been extended before. We check this for you at the design stage and handle the application to South Lanarkshire Council or North Lanarkshire Council if one is needed.
How long does an extension take?
A typical single storey extension takes 8 to 12 weeks on site. Double storey and wraparound projects usually take 12 to 20 weeks. We give you a programme before we start and keep you updated every week.
Can we live in the house during the build?
Yes, in almost every case. We seal off the work area, keep the existing kitchen running for as long as possible and plan the breakthrough for a day that suits you.
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