Ok thought it was 2 so that clears that up.There were 3 kids from the old gals marriage, so all assets go 3 ways (per stirpes). Wifey, bother-in-law and as her sister died some years ago her share goes to her 2 kids. So we would need to buy the other 2 branches of the family out (2/3 of 400)
Better area (just off Nob-Hill so to speak). It's just a thought ATM, not sure it is worthwhile, but it might be.
Still need as low a valuation as possible if thats the way you want to go.
Although I would expect BIL to hang out for the highest. Tell him fill his foots and wait it out for a year (paying bills during that time of course).
Its only something you can both decide on, but dont get involved into much hard labour.
J