it will largely be a function of where in Redondo Beach you want to build and the level and quality of finish work. you also have to consider what is on the land currently and the cost of removal of that structure. if you are building on a hill or let's say Hollywood Riviera, most likely more expensive than a flat lot in north redondo beach. best to think like a builder who may try to buy a lot for 25-30% of what the finished project will sell for and work backwards from there. while those numbers may not pencil out exactly because you won't have the expense of immediately reselling the house (I assume you want to live there) you don't want to over spend along the way. assume $250-300 sq ft all in (not counting the land) although there are certainly builders who will quote you higher or lower.