What would you call this type of flat?

[NooNooTheNotSoGreat]

Top floor flat in a tenement building. It has internal stairs.

TIA

Is it on two floors? If it is I would call it a maisonette. If all the living accommodation is on one floor it is a flat.

so it has two floors but is within a block of flats? I’d call it a maisonette if it was at the bottom, but a duplex if it’s higher up. No idea of the logic of that!

Duplex or a maisonette (although I think a maisonette has an external front door) ?

a duplex?

An apartment

Maisonette or duplex

A maisonette has is not about number of floors but about the fact it has its own front door so it's not a maisonette.

And a duplex is a (mostly) American thing where one house is divided into two residences.

Why isn't it just "a flat"? Are there really different kinds?

Maisonette if it has its own front door, flat if it has access from a internal communal space.

Flat.

Sounds like a flat to me. Internal staircase meaning there’s a communal front door with satires to top floor (maisonette is ground floor with own front and back door).

A split-level flat.

Duplex

Sounds like a flat to me. Internal staircase meaning there’s a communal front door with satires to top floor (maisonette is ground floor with own front and back door).

Yes there's a communal front door with stairs leading to all three levels but the house itself also has stairs and the living space is spread over two floors.

Thanks to all for replying. It's interesting to see how many different terms there are. I appreciate your help.

A maisonette. A 2 storey dwellings above or below another property. The other property might be a maisonette or might be a single storey flat, in addition the maisonette might be above a commercial property e.g a shop.

I would call that a double-upper flat, from what you describe.

Duplex.

I'd call it a split level flat.

@NooNooTheNotSoGreat I sold last year - 4 bed/2bath flat split across 2 levels. Front door off the street leading to communal space and entry door to my property plus 1 other. Both above commercial. We did have our own private back garden which could be accessed via stairs from a balcony built off of our kitchen/diner.

Estate agent marketed it as maisonette.

@Username24680 Thanks. That's helpful.