This is our first time ever redoing anything so not sure which route to take.

I'd recommend hiring a general contractor for this. I've done 3 remodels at 3 different homes and always took a general contractor.

A lot of contractors will advertise themselves as ones that specialize in bathroom remodels / kitchen remodels, I'd stay away from contractors who specialize in new-builds / additions, etc., because this job may be too small for them.

This job will probably need a few sub-contractors - plumber, electrician, tile setter, dry-waller, framer(?), etc. - coordinating all of them will be extremely difficult to do on your own.

If you know exactly what you want (in terms of what goes where, materials selections, etc.) - prepare a file with all of these details - it will make it easier for the contractor to give you an accurate quote. I typically do it in a PowerPoint file, with photos, sketches and links - here are a couple of example slides:

placement of plumbing/bathroom layout is the only thing staying the same.

That would definitely make things easier and cheaper, but there may still be a lot of work involved, depending on exactly what you are doing.

For example, we replaced a built-in tub (the one pictured above) which had drain on the side to a free-standing tub with drain in the middle - so we've had to move the drain location ~2-2.5 ft, which actually required drilling into the concrete slab foundation, etc.... very noisy and messy :)

Another example - when we ripped out the tiles/drywall on another master bath we remodeled - the entire framing was black and crumbly - all mold. The master bath basically needed to be completely re-built. So make sure to account in your budget for surprises which may not be known when the contractor would be putting together the quote.

Thank you! How did you create the drawings? Did the contractor create those?

How did you create the drawings? Did the contractor create those?

The seller of the house had them available (she built this house) so we were lucky to have them on hand. If you don't have them, the contractor may create them for you (that's how things went for us on another remodel where we didn't have any drawings available).

Ok! Perfect! Thank you!

" This is our first time ever redoing anything so not sure which route to take."

You do not want to hire individual tasks out. That's the route to a train wreck in slow motion - not to mention the added costs of marriage counseling. Try that with a kitchen remodel and you are looking at divorce - seriously...not kidding. I've seen couples who knew what they were doing and have been together for 25 years almost end it over kitchen remodels.

Your general can do "as-built" floorplans - no problem. We did them all the time for an entire house. If nothing is really changing, they may not even need to do that. They should do to a tile layout to show how floor / wall tile will go - it avoids a lot of surprises. Same with an elevation showing a bathroom sink / vanity if that's changing.

Drawings can communicate a lot of information that avoid assumptions. If there are changes being made, don't be afraid to ask for a scale drawing - even if it's with a pencil and an architect scale on grid paper.