Integral garage dilemma

[garageconvodilemma]

So I have an integral garage which I converted on a shoe string years ago into half utility half garage with a fake garage door.

I'm unexpectedly going to be staying in this house longer than I planned now due to divorce - 3 kids - and the housing market in my area being ridiculous

I'd like to convert the space properly. It's a 1970s house so I would say isn't as wide as modern garages (approx width about 2300mm and length 4500mm

I'm stuck what to do...

Option. 1) form doorway from porch into space that way 3 kids and pets can all come into the space instead of tramping through my lounge. So the space would be a (very large) boot room and utility - think fancy built in cupboards the works (as budget allows)

Option 2) put a WC in there as well - BUT no waste on that side of the house at all. Would been a Saniflo and macerator (which I'm just not bare on 💩) or trenching through the house (we only have one bathroom currently)

Option 3) am I trying to do to much by making it a utility / boot room / AND study? (I WFH a lot)

Will post a layout shortly

Anything involving underground drainage and sewers will be expensive.

I do find boot rooms in our typical acacia drive homes, soooo "Hyacinth Bouquet".

I had a friend who lived in an old vicarage and they had a real boot room. Full of riding gear, an old battered belfast sink. Wooden racking for barber coats and all sorts of jackets, shoes and umbrellas. They affectionally called it "the Mess".

When you say that you're currently using half as a utility, do you mean washing machine/sink etc? If so, where do they drain to?

Yes I'm mulling this over as an option too!
Although what puts me off this option is that I'd have to take all the plates etc from dinner through the lounge back into the porch (potentially) to enter the utility so a long way round.

There isn't really anywhere else a doorway could be created other than through the porch - the lounge layout is awkward so that the only wall the tv can go on is the one back to back with the garage

It's a combined system from what I've been told by the water/drain company

However the connection in the garage is really old and pretty sure the pipe size is not sufficient to take waste from WC (I saw it once years ago) - the pipe I think connects underground down the side of the house but to get a WC waste in would mean digging the drive up (its tarmac) - from what I've read before washing machine waste is circa 30/4mm and WC waste is 100mm

Pretty sure planning isn't required - I have a driveway which takes 2 cars - the house is so old it was built for 1979s morris minors to be parked not modern cars 😂 also about 6 houses of the same house type round the corner already have their garages converted

Bit of digging on rightmove when they were sold over the years doesn't really show them using the space for much more than a study - no one has put WCs in there.

It's not wide enough for a dining room either - most modern single garage sizes are about 3x6m and mine is little over 2.2m by about 4.5m which really affects its usability.

Would it be possible to add a toilet at the back of the house at a later date, possibly as part of a conservatory type extension?

@Melroses

Yes it would be much easier to do as part of an extension - before ex husband left the plan was to exactly that!

Getting a normal toilet in then sounds extremely disruptive and probably hugely expensive. We've got a macerator toilet at the moment, because for some reason the previous owners thought it made more sense to have one of those than use the actual space with a soil pipe, designed for a toilet 🤦‍♀️

It's not awful, in fairness and we haven't had any issues.

My garage backed onto my utility room but had no access other than through the up and over door outside. I had the door removed, bricked up half way and a window installed then a door cut between the back of the garage and the utility. The floor was raised up to match the house and properly insulated/boarded out/plastered. It's created a full room off the kitchen that could be a (big) 4th bedroom but is my home office. The boiler was at the back of the garage so I had a cupboard built round it that also fitted the washing machine & tumble drier stacked on top of each other to make a washing cupboard where I can also store the mop, ironing board, broom etc. it's fab !!