Garage Conversion FAQs: Everything Devon Homeowners Need to Know

If you’re thinking about converting your garage, you’re not alone. Thousands of homeowners across Devon are realising that a well-planned garage conversion is one of the fastest and most cost-effective ways to add extra living space without moving home.

At Devon Garage Conversions, we’re often asked the same practical questions — from costs and permissions to timescales and building regulations. Here are the most frequently asked questions (and honest answers) from our team of experienced builders.

1. How much does a garage conversion cost in Devon?

For a typical single garage, you should expect to pay between £12,000 and £18,000, depending on size, specification, and finish quality. Double garages start from around £20,000 to £28,000.These figures include full insulation, electrics, plastering, flooring, and a new window to replace the garage door.

If you’re adding an en-suite or kitchen area (e.g. for an annexe or guest suite), allow for a higher budget of £25,000–£35,000.

2. Do I need planning permission for a garage conversion?

In most cases, no. Garage conversions generally fall under permitted development rights — meaning you don’t need full planning permission if the external appearance isn’t significantly changed.

However, you’ll still need to comply with Building Regulations, covering structure, insulation, electrics, and fire safety. We handle all the paperwork and liaise directly with Building Control on your behalf.

3. How long does a garage conversion take?

A standard single garage conversion takes 2–3 weeks from start to finish. Double garages or more complex projects (e.g. adding a bathroom or dividing into two rooms) can take 3–5 weeks.

We complete parts of the build off-site to speed up the process, reduce noise, and minimise disruption to your home.

4. Can you convert a detached garage?

Yes — detached garages are ideal for creating home offices, guest suites, or gyms. If the garage is away from the main house, we can install independent heating, insulation, and electrics to make it self-contained. These conversions often make great Airbnb or multi-use spaces.

5. What’s included in a full garage conversion?

A professional conversion typically includes:

• Removal of the old garage door

• Installation of a new insulated wall and window

• Full wall, floor, and ceiling insulation

• Electrical wiring and heating

• Plastering, painting, and flooring

• Internal door connection to the main house (where applicable)

Every project we deliver meets current Building Regulations and is ready for immediate use once complete.

6. Will a garage conversion add value to my home?

Yes — on average, a well-finished conversion can add 10–20% to your property’s market value, depending on location and design quality.

For many homeowners, it’s a better investment than an extension, as it uses existing structure and requires less time and cost. Estate agents in Exeter, Torquay, and Teignmouth often highlight converted garages as major selling points.

7. Can a garage conversion still include storage?

Absolutely. Many homeowners choose to keep part of their garage for built-in cupboards or storage space. We can design bespoke solutions that keep your new living area clutter-free while retaining practicality.

8. What types of rooms can a garage conversion become?

Common options include:

• Family room or snug

• Home office or study

• Guest bedroom or annexe

• Home gym

• Playroom or teenager’s den

• Studio or hobby room

We’ll tailor the design to your home’s layout, natural light, and your personal needs.

9. How do I get started?

The process starts with a free, no-obligation site visit. We’ll assess your existing garage, discuss ideas, confirm structural details, and provide a detailed fixed-price quote.

From there, our team manages everything — from planning checks to completion — delivering your new room quickly, professionally, and with minimal disruption.

Why Devon Garage Conversions?

With over 30 years of experience and hundreds of successful projects across Devon — including Exeter, Sidmouth, Teignmouth, Torquay, and Plymouth — we specialise exclusively in garage conversions. That means every project benefits from dedicated expertise, efficient processes, and a finish that feels like it’s always been part of your home.

Final Thoughts

Whether you’re converting a single, double, or detached garage, the key to success is choosing a specialist who understands every detail — from insulation values to local building standards.

If you’re ready to explore your own garage conversion in Devon, contact us today to arrange a free design consultation and discover what’s possible.