Are you going to redo the kitchen?

Our first Victorian had the half bath in the kitchen (it was the original pantry made into a half bath so that there would be one downstairs) and I always thought it was so funny. But really wasn't ever a problem. Our DD has an 1892 house and again, it is the pantry converted into a bathroom and that is in her kitchen too. Our present 1920 house has the half bath in the dining room (used to be a dish closet plus the space behind the closet where the ice box stood in the back hall) and I think that is more awkward than in the kitchen . . . . we always tell dinner guests to go upstairs . . .because sitting at the dining room table, you can hear them tinkle! But then we also don't think cooking is a group activity so there's never a big crowd in the kitchen. It is convenient for us -- all three examples and basically that's who is using it most.

Mine opens into the kitchen also. The room was made from taking space from the fortunately large kitchen. Really, it was the only place to put it if we wanted a 1st floor bathroom (sink, stool and shower). Not the ideal location but it eliminates the kids tamping through the house to get to the upstairs facilities. We installed an exhaust fan which covers mush of the "noise". In an old house, I feel lucky to be able to have 2 bathrooms.

In order to give useful opinions on a solution, we really need to see a scale drawing of the kitchen, at least. Right now the kitchen looks big enough that if you reconfigured it a little bit you could fit both in there with a separate hallway separating things but I doubt that's actually the case?

I bought a 19th C. home with a combination kitchen/washroom. Not a fan of combining intake and ouput, so to speak, so the wc had to go.

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If your drawing is to scale, the wc could be reduced in size by half, including a sink(!)

As suggested above, alternative first floor locations might be possible too. Especially under the stairs where a screened partial hall could be used to camouflage it a bit.

It could be worse - my only bathroom downstairs opens to the dining room!

:[

powermuffin -- mine too! Good for us -- not so good for company!

If picture is slightly scale you could remove bath door and build wall all the way across the open space with a new arch opening close to dining wall. Then install bath door entering from protected arch space. Like a small hallway. Might be able to tuck a coat rack or broom holder on the back side of wall for convenience.