@Michael RossierThousands is feasible, let's assume that laundry is connected to a non-conforming unit, as well.

Government toyed with printing paper currency with no gold reserve and make money more available to encourage people to buy homes.I went to several major lenders and they already jumped on the bandwagon even before the December announcement having mortgage interest rates around 85 basis points higher and start charging points for some products.This study focuses on different loan programs popular in Silicon Valley, CA.Conforming loan (PITI-Santa Clara County, CA) vs required gross income For a conforming purchase loan of $417,000 for a 30 year fixed rate with 20% down $521.25K purchase priceThe monthly mortgage(PITI) w/o hoa due and annual income required is:- 3.8% $2,540 $78K-with an assumed 10K debt 2015- 4.3% $2,665 $81K 2016 Nov- 4.8% $2,785 $85K 2017 Mid year- 5.3% $2,925 $88K 2018?

Bank of Internet (BofI) out of San Diego will do these unusual type cooperatives/TIC of ownership last I checked.They also operate in the bay area as well so its something to consider.They do all the non conforming types of paper that fall outside of Fannie and freddie including non unwarrantable condos w/ certain requirements.

@Ramon Alvarez  Yes, because you own it, as long as it conforms to the banks guidelines.  

Preferably a Alt A loan, but also willing to go conforming as long as the appraisal comes in high enough.

When it comes to tear downs and new builds the town is heavily involved especially if the lot does not conform to the current zoning dimensional bylaw.Aside from that I have spent who knows how much on mailings, subscriptions, and legal advice, but that is all normal business activity.

You'd also have to conform to the bank's seasoning issues: usually owning 6-12 months.- Tom

This is who you need to be dealing with.I don't think you are looking for a certificate of occupancy which is usually issued after construction, but a certificate of legally established non-conforming use.  

Also- the Conventional mortgage conforming loan limits (non-jumbo) were also increased to $424,100 (the previous maximum was $417,000). 

@betty @Betty Cruz for a conforming loan, Fannie and Freddie seasoning requirement is 6 months.