Trusted Local Extension Builders
Custom House Extension Glasgow
Looking to extend your home in Glasgow? We deliver professional house extension Glasgow services designed to add space, increase property value, and remove the need to move. We work with homeowners across Glasgow and the surrounding areas, providing a complete design and build house extension service tailored to your property, budget, and goals.
As established builders in Glasgow, we manage every stage of your project in-house from initial consultation and design support through planning approval and construction.
Experts in Building, Conversions, and Extensions Throughout Glasgow.
Why Property Owners Trust Our Builders
15 Years In Business
Over 1500 Happy Clients
2500+ Projects Completed
Fully Insured For Peace Of Mind
Why Glasgow Homeowners Choose Us for House Extensions
Homeowners choose us because we are trusted house extension builders in Glasgow with a proven track record of delivering high-quality results. With years of hands-on experience, we operate as a local house extension company in Glasgow with a fully in-house, all-trades team covering builders, joiners, electricians, plumbers, roofers, and plasterers.
Our experienced extension builders in Glasgow manage every stage of the project, working closely with architects and local authorities, including Glasgow City Council, to ensure full compliance. All work is fully insured, guaranteed, and carried out to current building regulations, giving you confidence, clarity, and complete peace of mind from start to finish.
Is a House Extension the Right Choice for Your Glasgow Home?
Yes a house extension is often the most practical and cost-effective way to gain extra space in a Glasgow home without the expense of moving.
For many homeowners, the biggest issues are outgrowing their current space, facing the high cost of buying a larger property, and not wanting to leave a familiar neighbourhood. A home extension in Glasgow solves all three. Instead of paying estate agent fees, stamp duty, and moving costs, you can invest directly into improving your existing property.
When you extend your house in Glasgow, you create additional living space that suits your needs whether that’s a larger kitchen, extra bedroom, or open-plan family area. In the current Glasgow property market, a well-designed extension can also increase your home’s value, making it a smart long-term investment while allowing you to stay exactly where you are.
Types of House Extensions We Build in Glasgow
We design and build a wide range of house extensions to suit different property types, space requirements, and budgets. Every extension is planned around how you use your home, ensuring the finished space adds both comfort and long-term value.
Single-Storey House Extensions in Glasgow
A single storey extension in Glasgow is one of the most popular ways to increase ground-floor living space. These extensions are ideal for expanding kitchens, dining areas, or creating open-plan living spaces that connect directly to the garden. A ground floor extension in Glasgow can be built to the rear or side of a property, depending on available space and layout. Rear and side extensions work particularly well for modern kitchen-diners, family rooms, and additional bathrooms, offering practical space without altering the upper levels of your home.
Double / Two-Storey House Extensions
A double storey extension in Glasgow is a highly efficient option for homeowners who need more space without sacrificing garden area. By extending both floors, a two storey house extension in Glasgow allows you to add bedrooms, bathrooms, or home offices upstairs while expanding living areas below. This type of extension often delivers a strong cost-to-value ratio, making it popular with growing families who want maximum space and long-term return on investment.
Small House Extensions
Small house extensions in Glasgow offer a practical solution when space or budget is limited. A compact home extension in Glasgow can still deliver significant benefits, such as adding a utility room, small dining area, or extra living space without major structural changes.
Wrap-Around & Side Extensions
A wrap around extension in Glasgow combines rear and side extensions to create a large, continuous living area. A side return extension in Glasgow is ideal for maximising unused space, especially in terraced and semi-detached properties, allowing for wider kitchens and improved layouts.
Our Design & Build Process for House Extensions in Glasgow
1. Initial Consultation & Home Survey
We start with a detailed consultation to understand your goals, space requirements, and budget. During the visit, we assess your property and explain the most suitable options for a house extension in Glasgow, based on layout, access, and local planning considerations.
2. Design, Planning & Building Warrants
Where planning or building warrants are required, we support the process by coordinating designs and technical details. Consideration is given to local building requirements, neighbouring properties, and access constraints common in Glasgow, helping projects move forward smoothly without unnecessary delays.
3. Construction & Project Management
As experienced extension builders in Glasgow, we manage the full build using our in-house, all-trades team. Dedicated project management keeps work on schedule, maintains quality control, and ensures clear communication throughout the build.
4. Completion & Final Checks
Once construction is complete, we carry out final inspections and quality checks before handover. The result is a professionally delivered, stress-free design and build house extension in Glasgow, finished to an agreed standard and ready to use.
Planning Permission for House Extensions in Glasgow
Not every house extension in Glasgow requires planning permission, but most projects do need approval or a building warrant.
In many cases, smaller extensions may fall under permitted development, meaning formal planning permission is not required. However, this depends on factors such as the size, height, position, and proximity to boundaries. Larger extensions, double-storey builds, or properties in conservation areas will usually require full approval.
We have extensive experience handling house extension planning permission in Glasgow, working directly with Glasgow City Council and surrounding local authorities. Our team guides you through the process, prepares the required information, and supports your application to avoid delays or costly mistakes.
By managing planning and building warrants as part of our service, we ensure your extension is fully compliant, approved, and ready to progress with confidence giving you complete peace of mind from the outset.
How Much Does a House Extension Cost in Glasgow?
The cost of a house extension in Glasgow typically ranges from £1,500 to £2,500 per square metre, depending on the type and complexity of the build.
The average house extension cost in Glasgow varies based on several key factors. The overall size of the extension plays a major role, as larger builds require more materials and labour. Design complexity also affects pricing—simple single-storey extensions are usually more cost-effective than multi-storey or wrap-around designs.
Material choices can significantly influence the extension cost per square metre in Glasgow. High-end finishes, specialist glazing, or structural steelwork will increase costs, while more standard specifications help keep budgets controlled. Access to the property is another consideration, as restricted access can affect construction time and logistics.
Because every property is different, accurate pricing can only be confirmed following a site visit and detailed discussion. Rather than offering fixed prices, we provide clear, itemised quotations based on your specific requirements, ensuring transparency from the outset and helping you plan your investment with confidence.
Why We’re a Leading House Extension Builder in Glasgow
Homeowners choose us because we operate differently from many house extension builders in Glasgow. From the first conversation, you deal directly with the people responsible for delivering your project. Our directors remain involved throughout, providing clear advice, accurate pricing, and hands-on oversight from start to finish.
As professional extension builders in Glasgow, we work with a fully in-house, all-trades team. This means builders, joiners, electricians, plumbers, roofers, and plasterers are all managed under one roof. By avoiding subcontractor dependency, we maintain consistent quality, reliable scheduling, and clear accountability at every stage of the build.
Our focus as local builders in Glasgow gives us a strong understanding of local property styles, planning requirements, and construction challenges. We regularly work with local councils and architects, ensuring each extension is designed and built to suit both the property and its location.
Communication is a key part of our service. We keep you informed throughout the process, respond promptly to questions, and manage the project with minimal disruption to your home. This structured, transparent approach allows us to deliver well-organised house extensions that meet expectations without unnecessary delays or complications.
Areas We Cover in and Around Glasgow
We deliver high-quality house extensions throughout Glasgow and the surrounding areas, working regularly in the West End, Southside, Maryhill, Kelvindale, North Kelvinside, City Centre, East End, and nearby locations. Clients searching for House Extension builders Glasgow trust our experience with traditional homes and modern apartments alike.
- House Extension Glasgow Suthside
- House Extension East Kilbride
- House Extension Johnstone
- House Extension Bearsden
- House Extension Shawlands
- House Extension Newton Mearns
- House Extension Clydebank
- House Extension Renfrew
Didn’t found your post code? No worries we cover all the postcode from Glasgow G1 to G82. For those needing House Extension builders Glasgow Southside or House Extension near Paisley, our team delivers the same professional service wherever the project is based
Looking for a service other than House Extension?
At Crownstead Developments, We Provide other Construction services too:
Frequently Asked Questions
How long does a house extension take in Glasgow?
Most house extensions in Glasgow take between 8 and 16 weeks to complete, depending on size and complexity. A straightforward single-storey extension is usually quicker, while double-storey or wrap-around extensions take longer due to additional structural work and finishes.
Do I need to move out during the build?
In most cases, you do not need to move out. Many homeowners remain in their property while the extension is built, especially for rear or side extensions. Careful planning and phased work help minimise disruption, although short periods of inconvenience are normal.
What is the most popular extension type in Glasgow?
The most popular option is a single-storey rear extension, often used to create larger kitchens or open-plan living spaces. Kitchen extensions are especially common, as they improve daily living while adding strong resale value in the Glasgow market.
Will an extension increase my property value?
Yes, a well-designed extension can significantly increase property value. Adding usable living space, bedrooms, or modern open-plan areas is attractive to buyers and often delivers a strong return, particularly in desirable Glasgow neighbourhoods.
When should I contact a builder?
You should contact a builder as early as possible, even at the idea stage. Early advice helps shape realistic designs, budgets, and planning requirements, reducing delays and ensuring your house extension progresses smoothly from concept to construction.
Already have your plans?
We aim to make building an extension as simple as possible. As design & build specialists, we enjoy speaking with clients even at the early “just thinking about an extension” stage. Many builders only get involved once you have drawings and planning permission, but we like to start earlier.
In our first meeting, you can share your ideas, priorities, and must-haves. We’ll offer suggestions to help you make the most of your space and budget.
The next step is involving an architect. We work with a range of architects who specialise in different types of extensions.
Our Working Places
From start to finish, Marcin and his team were exceptional throughout our extension project. The construction was completed on time and with outstanding quality. The team of tradespeople were courteous, highly competent, and always ready to tackle any challenge. Marcin was consistently available and supportive, addressing any questions promptly. I would confidently recommend Crownstead Developments.
customer feedback October 2025
Start Your House Extension Project in Glasgow
If you’re considering extending your home, the best place to start is with a clear, professional conversation. We offer a free house extension consultation in Glasgow, giving you expert advice tailored to your property and plans. Get in touch today to request a house extension quote in Glasgow
Telephone
0141 462 0912
Address
95 Shakespeare St, Glasgow G20 8LE
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Office Hours
Open 24/7