Cost to turn garage into utility room

[renov8]

Our new house has a small kitchen and no space for our dishwasher in its current configuration. We were thinking of adding a side-door to the garage (not attached but the wall is in our garden about 15ft from the house), water supply and drainage so that we can put the washing machine and tumble dryer out there, dishwasher in the kitchen. Has anyone done this and could give me a rough idea on costing please? The area is South Wales if that makes any difference in labour prices! Thanks

A few things to consider that would help with costings is how far are you willing to go. eg. Do you need further sockets / lights in the garage - this calls for electrician. Do you have windows ( assume you do), or need to install for ventilation, do u want to redo the floors and walls, to make it like a proper room etc. As well as obviously installing the water and draining.

I think the installation of water may make the room now a "habitable room", which may mean a need for planning permission ( at least this is the case in England). Which is about £800 application fee,etc.

So theres a few things to bear in mind, which you may have already considered, or may not have. Just my 2 cents.

Just for your comparison, we had a similar situation, except we did a partition to convert our detached garage into a home office. So most of the above, except the water utility bit. And it cost us about £5k in materials and labour.

Were looking at a house which we'd like to convert one of the garages into a bedroom/reception room and it sounds like it could cost 10-20k depending on specifications.

The garage already has electricity as previous owners had a fridge-freezer in there. There aren’t any windows and it’s part of a block of 4 garages, ours being on the end, nearest to our house. The floor is concrete and I was going to just add some cheap lino flooring for ease of cleaning. The rear of the garage I would like to turn into a gym. We would buy a secondhand exterior door (with locks) to save money and insulation/heating etc isn’t something I plan to do…

Water and drainage will be the big bits. If you want to have be permanently connected to the water mains and sewerage the pipework has to be buried 750 mm deep according to water regs - which is excavator territory. We paid about £3K for that to our outbuilding, although had quite a long stretch to do.

Everyone thinks they’ll use their unheated and non-air conditioned garage gym all the time. In reality, only the most dedicated gym bunnies actually do - so I’d look into a heating and cooling system before you shell out on equipment.