[Doady]

Correction to my earlier post: Panasonic LX7 has a F1.4-2.3 lens. It's the older LX5 that has F2.0-3.3. For interior real estate photos you probably should consider 20mm wide angle or better though, to exaggerate the interior space and stuff. You don't really need an SLR for that thoguh, especially if size is a concern.

I recommend Olympus E-P3 combined with the 9-18mm (18-36mm equivalent) F4.0-5.6 lens, for $1400. Ultra wide angle reasonable priced and compact (though not pocketable).

There's also Panasonic GX1 with the 7-14mm F4.0, for $2000, but it's bulkier than the Olympus, though still far more compact than any SLR/lens combo.

There are even smaller (and cheaper) bodies that you can substitute from both systems, E-PL3 from Olympus and GF5 from Panasonic, with less external controls and more menu-based operation, which I don't like. But that's personal preference.

Both Samsung and Sony have similar lineup of interchangable lens compacts, but the lens are huge, almost as large SLR lens, it is kind of pointless.