Pls post pics and a floor plan w measurements. Hand drawn is OK.

Sorry the rest of your post only popped up now.

R u in floorboards with good access under house to move plumbing?

My suggestion is to change the window to a higher location stretching across wall with mirror below.
Reduce height of wall between shower and bath replacing it with glass.
If you can in budget then replace the shower

The house are on stumps with floorboards but the bathroom are on raised concrete slab with the perimeter bricked up.

For your budget and on concrete you won’t be able to move much at all. Are you planning on refreshing the whole room or just moving the vanity?

I am planning on refreshing the whole room. I've taken @Kate suggestion on moving the window higher to accommodate a mirror above the vanity. But come up with two other options. I can stretch the budget with another $4K for contingency.

Option 1: Combine the shower and bath and move the vanity.

Option 2: Move the vanity, remove the wall between shower and bath, remove bath tub and install a shower instead.

Leave shower and bath and window where they are to save money. Make door a cavity slider and then you have room for the vanity on the wall opposite the bath. Only moving the vanity will help allow your funds to stretch to new fitting etc.

Take the door off and replace with a sliding barn door, then put the vanity under the current mirror.

I don't think I could I put in an entry sliding door unless the shower is removed

If I move the vanity to the current mirror, I think there won't be a comfortable space in front of the toilet and at the same time impede on the entry into the bathroom.

If you do not require a bath, then option 2. If you require a bath then option 1. I would extend the vanity cabinet completely across that wall to the door frame for extra storage and bench space. It’s an old home, so the toilet would not have been there previously, it would of been the vanity in that vanity/toilet space. The shower seems way to small for comfort, so I would definitely go with option 1 or 2. But your budget is extremely tight for a bathroom Reno. Are you able to gut the bathroom yourself, after getting a plumber and electrician in to close of services?

I can gut the bathroom myself. Option 1 would require moving the plumbing to the adjacent wall. Option 2 the plumbing is already on the same wall. But both options still need to have plumbing for the vanity waste. Currently it sits in the middle of the shower base, it seems too far for the vanity.

If you are ripping up the floor tiles, a plumber would be able to re route the vanity waste into existing shower waste.

I had another look at your under house pic. You have or have had major water leakage, most likely from the bathroom. Most likely it needs a full gut and re waterproofing. The good news is that as it’s a suspended slab, moving drainage is easier than an on ground slab. Start with finalising the layout you want and get quotes on that. Glad you doing the removal yourself. Demo is a lot of fun. Given that it is a demolition job, you do have the opportunity to fit a cavity slider (use a solid door) which will give you floor space options.

How many bedrooms? Omitting a bathtub might not suit the house for any future resale value.

Have you had an asbestos survey done? That is an important safety consideration and could add to costs.

The house has 5 bedrooms and 2 bathrooms. But only this one has a bathtub. At this stage I’ve only taken a few quotes for an asbestos inspection, yet to get a removal quote if there are any in the bathroom. This is a good point, not having a bathtub is one of my concern that may effect house value and awkward for this many rooms?

Five bedrooms is definitely a family home and a bath is important. If you post the full floor plan you will get some great suggestions from others on how to maximise it.

If it’s just the mirror location, why not put a mirror on a pivot arm? Or a slider that hangs over the bath and then slides across when needed?

The age of your home will suggest if there is asbestos in the wall linings

Do you need five bedrooms. Can you turn one into a bigger bathroom?,i

@Melt In ACT Will give you points for the idea of having the mirror on pivot arms or on slides but it doesn't appeal to me

@Kate At the moment, I don't need 5 bedrooms. Turning one into a bigger bathroom is something I didn't think about. What would be a minimum budget to turn a bedroom into a bathroom?

Be sure to visit my "Portfolio", where you will find important information on the different ways of presenting a realistic design, with its textures and models.

Change the direction of the door, lower the ceilings, change the floor and the wall. Change the toilets, toilet under window and sink to the toilet site.

A full gut and redo of a bathroom is not a cheap exercise why don’t you post a floor plan of house. We can give you some layout ideas and you can get quotes of diff options from professionals. If you keep tiling to minimum and choose affordable tiles and fixtures this will help as would having the bathroom near existing plumbing. Using a new room allows the existing bathroom to stay in service until the new one is ready.

What are people's thoughts on option 3

Should allow you a 600 vanity. Give 800. Mm for toilet. Want to keep vanity opp bath with clearance to the shower being important. If you get too close to corner of vanity you will want to look at a narrower vanity.

Check out Saniflow toilets, these allow you to move toilets that would be difficult to do so, they cost a bit more than the norm to buy.

Two suggestions,

Remove shower and have shower over the bath

Maintain shower and bath

In both you would need to use narrow vanities and depending how much space is between the door and the wall this could possibly be OK for towel rails using hooks else where.

@siriuskey the first layout is good, the toilet it tucked away in the corner and won't be the first thing that one would see after opening the door. However, I would have to use a skew trap pan toilet. The current toilet is a p trap pan toilet. I've searched a few skew type toilets and they are not aesthetically pleasing at all.