This is the first floor of the farmhouse from the original "Night of the Living Dead", translated into a 5-foot scale battlemat. Adapting real buildings to a battlemat can require some distortion, but the layout of the map is reasonably faithful to the film.
The farmhouse from the 1990 remake has a similar, but slightly different layout. The rooms are in roughly the same location, but the front door is in the central hallway and the kitchen is much smaller.
The cellar is a single small room with a door that can be barred, in which hide Tom and his girlfriend Judy, Harry and Helen Cooper, and their daughter Karen. The keys to the shed are always in the cellar. We only get a brief glimpse of the upstairs hallway, and the only thing known about the layout of the upstairs is that it's possible to toss Molotov cocktails from a bedroom out in front of the house.
1. The Farmhouse
A. Back Porch.
The easiest entrance to the farmhouse is via the unlocked door on this small roofed porch, which allows ingress to the kitchen.
Sacks of flour and cans of pickled vegetables line the walls of this small pantry.
Counters and cabinets line the walls of the kitchen, and a small table occupies the center of the room. Toolboxes in the kitchen cabinets hold hammers, handaxes, and nails. A sliding door connects to the pantry.
D. Dining Room
A table and setting for four sits at the center of the room, and a sofa and armchairs line the walls.
E. Front Porch
A picnic table offers a place to sit, but the front door itself is locked.
F. Drawing Room
The leering, mouldering heads of mounted animalsa deer, a boar, and the skin of a bobcatgrimace from the walls of this room. A desk, littered with diverse rumpled papers and candlesticks, faces the fireplace.
Materials for maintaining the fire are stored in this closet, including a box of firewood, a clearly labelled bottle of lighter fluid or flammable oil, and a box of matches.
A trickle of putrid blood is pooling at the base of the stairs.
I. Sitting Room
Armchairs and occasional tables line the room, facing the fireplace.
This small close is mostly filled with fine women's shoes and clothes. A rifle and a box of ammunition is hidden behind the clothes.
BTW, and according to Wikipedia, it seems that the original movie was filmed near Evans City, Pennsylvania, about 30 miles from Pittsburgh. The shots of the exterior and lower floor were filmed at a house that was afterwards demolished. Here's some then-and-now photos of the cemetery.