Spec construction cost in Seattle area Plus GC recommendations

[Gaurav Malhotra]

Hello Seattle area Real Estate pros --- 

we are starting out and looking to do a spec construction for 2-5 townhomes in the Seattle area. I have received a lot of varying cost per sq ft for construction -- from 110 to 400+.

Can anyone please share actual construction cost for a simple spec townhome -- 3 bed, 2 Ba (1 + .75 + .25) ----- Total townhomes - 4, total sq ft 7000.

when i run numbers on the project I need to be below 150 for profitability. 

Any recommendations for GCs that fit the bill is most appreciated.

Thanks

GM