Here's a quick render to see how close I could get using 'off the shelf' textures. The brickwork texture is 256x256 (4 bricks wide and about 13 courses high) so it's a bit small for multicoloured brickwork like this, the pattern repeat tends to be obvious. I used planar projection (not UVs), hence the ugly stuff where it turns the corner into the stair.

I used the same image for the bump, I let the renderer desaturate it and invert it, no point in doing that in photoshop and loading it as a separate image in this case.

I added 3 lo-res grungy images to dirty the brickwork up and break up the pattern repeat a bit.

The effect obviously isn't anywhere near as nice as yours, particularly as a large expanse of bare, evenly-lit wall, but as a backdrop in a populated scene I think it would do the job. And the memory hit is tiny, so when you hit the render button it could mean the difference between being able to render the scene and an error message.

The floor is a 348x348 image with 2 whites and 2 blacks on it.