Amazing opportunity to finish a 4 apts building that will yield 13%++

Amazing opportunity to finish a 4 units building that will yield 13%++ cap rate!! Remodeling is underway currently for a 4 apartments building and owner is looking to sell at any stage of the rehab. ARV $700k++ Projected rents (conservative forecast): Apt1- 2BRS/1BA- potential rent $1,350 Apt2- 2BRs/1BA- access to back yard- potential rent $1,450 Apt3- 2BRs/1BA- potential rent $1,350 Apt4- 3BRs/1BA- potential rent $1,600 Total potential income (conservative estimate) $5,750/mo or $69,000 annually. The basement has separate entrance thus can accommodate a very large 5th apartment of 2BRs- another $1,350 monthly- so potentially the building can yield $7,100/mo or $85,200 annually! Current status- - Architectural planning and design- completed (drawings are attached here) - Framing for the 4 apartments configuration has been completed. - New windows installation- completed - Rough plumbing- completed - Rough electricity- completed - Insulations- in progress - Zoning variance for 5 apartments - in progress Current asking price is $330k, price will be adjusted as work continues to reflect the additional investment. Remaining work to complete the building is estimated at $100k.