Building Regulations
How Much Does a Garage Conversion Cost?
Understanding the True Cost of Transforming Your Garage
If you’re considering a garage conversion, one of the first questions you’re likely to ask is: “How much will it cost?” At CSM Trade North East, we believe in transparency and helping you make informed decisions. This page breaks down average garage conversion costs, what factors influence pricing, and what you get for your investment.
Average Garage Conversion Costs
Garage conversions are one of the most cost-effective ways to add space and value to your home. Here’s a rough guide to what you can expect to pay:
Single Garage Conversion (approx. 13m²): £7,500 – £10,500
Double Garage Conversion (approx. 26m²): £12,000 – £16,000
Detached Garage Conversion: £14,000 – £20,000+
Granny Annex or Full Studio Setup: £15,000 – £25,000+
💡 Please note: These are average figures. Your final quote will depend on your exact requirements and the condition of your existing garage.
What Affects the Cost of a Garage Conversion?
Several factors influence the price of your garage conversion. These include:
Garage Type – Integral garages are usually cheaper to convert than detached ones.
Structural Work – Removing garage doors, adding windows/doors, or raising floor levels will impact cost.
Utilities – Plumbing, electrics, and heating installation can add to the budget.
Insulation & Flooring – Essential for comfort and compliance with building regulations.
Interior Finish – Paint, flooring, lighting, bespoke storage, and joinery affect the overall price.
Purpose of Room – A basic playroom will cost less than a self-contained annex or home cinema.
What's Included in a CSM Garage Conversion Quote?
When you choose CSM Garage Conversions, you receive a fixed-price quote with no hidden extras. Our typical conversion package includes:
Full site survey and design consultation
All building work including walls, insulation, and flooring
Electrics and lighting
Heating installation (radiators or electric options)
Windows and doors
Plastering and decorating (basic finish)
Final clean and building control sign-off
👉 Optional extras such as underfloor heating, bespoke carpentry, or en-suite bathrooms can be added and quoted separately.
Is It Cheaper Than an Extension?
Yes — garage conversions are significantly more affordable than full extensions, which can cost £1,800 – £2,500 per square metre. A garage conversion generally ranges from £500 – £1,200 per square metre, depending on specification.
Plus, most garage conversions do not require planning permission, making the process faster and simpler.
Heating Options & Running Costs
To keep your converted space warm and efficient:
Radiators – Can be extended from existing central heating system
Electric Heaters – Great for occasional use or where central heating isn’t an option
Underfloor Heating – Modern, efficient, and space-saving (ideal for bathrooms, gyms or kitchens)
We’ll advise on the best option based on your garage’s size and usage.
Frequently Asked Questions
Do I need planning permission?
Usually not — most garage conversions fall under permitted development rights. We’ll check and advise during your quote.
How long does a garage conversion take?
Most conversions are completed in 2–3 weeks, depending on scope.
Will my conversion meet building regulations?
Yes. All work carried out by CSM is fully compliant with UK building regulations and includes inspections and sign-off.
Can I convert part of my garage and keep some storage?
Yes! We offer partial conversions, which are perfect for creating a new room while retaining some garage storage.
Will a garage conversion add value to my home?
Yes — when professionally completed, garage conversions can add 10–20% to your home’s value, depending on location and design.
Do you offer finance?
Yes — we work with Ideal4Finance to provide flexible monthly payment plans. Spread the cost of your garage conversion to suit your budget.
👉 Click here to apply for garage conversion finance
👉 Learn more about our finance options
Why Choose CSM Trade North East for Your Garage Conversion?
Let’s talk about your project. We’ll provide you with a free, fixed-price quote, tailored to your specific conversion goals.
At CSM Trade North East, we offer more than just beautiful garage conversions, we offer peace of mind. Our expert garage conversion team has years of experience transforming garages into stylish, compliant living spaces while adhering to strict UK Building Regulations. Whether you are looking for guidance on garage conversion costs, want to explore the various garage conversion options, or need help turning your ideas into reality, we are here to help every step of the way.
From popular choices such as Bedroom Conversions, Home Gyms, Home Offices, Living Rooms, Children’s Playrooms, Cinema Rooms, and Kitchen Extensions, to Bespoke Garage Conversion and even Detached Garage Conversions, our team handles it all. We also offer practical solutions like Utility Room Conversions and Full Flat Garage Conversions that seamlessly blend with your home.
Explore our full range of garage conversion possibilities and let CSM Trade North East help you create the perfect space to suit your lifestyle. Contact CSM Trade North East or call us today on 0191 4033283 for a free, no-obligation quote or expert advice.
