exhibit 10. 17 purchase and sale agreement this purchase and sale agreement ( the “ agreement ” ) is made as of this 1st day of may, 2017 ( the “ effective date ” ) by and between faac incorporated, a michigan corporation ( “ purchaser ” ) and oak valley 1229, llc, a michigan limited liability company ( “ seller ” ). st w i t n e s s e t h : whereas, seller is the owner of a parcel of land of approximately 2. 46 acres improved with a certain one story building containing approximately 17, 200 square feet of space commonly known as 1229 oak valley drive, ann arbor, washtenaw county, michigan ; and whereas, purchaser desires to purchase the property ( as hereinafter defined ) from seller, upon the terms and conditions as set forth in this agreement ; and whereas, seller desires to sell the property to purchaser, upon the terms and conditions as set forth in this agreement. now, therefore, in consideration of ten dollars ( $ 10. 00 ) and other good and valuable consideration, the receipt and sufficiency of which are hereby acknowledged, and the foregoing recitals, which are incorporated herein by this reference, seller and purchaser agree as follows : 1. sale of property. seller agrees to sell to purchaser and purchaser agrees to purchase from seller, the real property, personal property, permits, warranties and plans ( as each such term is defined herein, collectively, the “ property ” ) : 1. 1 real property. the parcel of land and appurtenant easements or other rights more particularly described on exhibit a attached hereto ( collectively, the “ land ” ), including, without limitation, all easements necessary to provide pedestrian and vehicular access to publicly dedicated streets from each driveway on the land, together with ( i ) all building structures, improvements and fixtures located on the land, including, without limitation, all heating, lighting, plumbing, electrical and air - conditioning fixtures ( collectively, the “ improvements ” ), and ( ii ) all easements, air, mineral and riparian rights, all development rights and all rights, privileges, servitudes and appurtenances thereunto belonging or appertaining, including all right, title and interest of seller, if any, in and to the streets, alleys and rights - of - way adjacent to the land and the improvements ( collectively,