the - i have a letter that's in your packet from ms. cowen who lives on berry street on the other homeownership project in mission bay. she's reviewed this closely i think a lot of the people who are in the affordable housing condo project on berry street we're hoping to see more but it's stroll difficult to do a homeownership principal on affordable housing. and i think this goes into the really bigger picture in san francisco of - this this has taken seven years. every other project affordable housing project in mission bay has taken a comparable infamous mauchlt it takes the amount of time and effort to get moving. block 7 is difficult. as we look more at mission bay and the bigger affordable housing issues in the city we have to look at what is feasible and we have to look at alternative funding sources because as we saw in this and hard it was we need to make it easier. thank you >> (calling names) >> good afternoon peter cowen from the housing u housing authority. i know that staff we've talked with the staff about this and they're not

ms. reilly can you address the decision your rem this can you explain or address what mr. cowen has raised the change from homeownership to reverend or rentals. >> i'll do a quick overview and invite up tim. so ownership and rentals are two markets. one is a difficult site for ownership because it's restrained it's competing with other buildings that are not up against the freeway and have more amenities. also the cost to own there's a 50 percent different between cost to own and it's cheaper to rent so there's more of a subsidy and the larger cost difference so if you are looking at having the numbers of the units to subsidize and the moderate rates there are other public subsidies available to the market rental rates for the affordable units and with the sales prices to get the level of subsidies from those market rates to subsidize those for sale units with the disconnect with the cost of ownership versus the cost of renting you can't get the same number of the units it didn't pencil out but i'm going to invite tim up to elaborate or correct any figures >> there's basically s