Does converting a garage add value?

Question

We’ve got a single garage that’s just full of junk, and I’m tempted to turn it into a spare room (bedroom, extra living area). But I'm not clear on whether this actually adds any value to the house if we were to move in a few years. Is there anyone who does garage conversions who can give me an overview of cost vs value added?

Sam · Answer

It would depend on the value of the house and what the demand is in that area. I have just priced a double garage conversion at £35k

Trevor · Answer

It depends on the level and cost of the work it needs to be done to building control standard or cannot be classed as official conversion and would not add any value 
Also if parking is limited in area taking away a parking area could decrease the value of the house

Alex · Answer

💷 Typical Costs
	•	Converting a single garage into a habitable room usually costs around £6,000 – £30,000 in the UK, depending on size, finish, whether you need plumbing, electrics, insulation, flooring, new walls or windows, etc.  ￼
	•	Average garage conversion projects often land between £10,000 and £20,000 for a basic conversion without structural changes.

📈 Potential Added Value
	•	Many property and construction experts suggest a well-executed garage conversion can increase your home’s value by about 10 – 20 %, especially if you turn it into a useful living space like a bedroom or family room.  
	•	Other sources indicate a slightly more conservative range of around 5 – 15 %, depending on the housing market, quality of the work, and local demand.

Does converting a garage add value?

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