Hello, A GC partner and I are working on a proforma to determine costs for a potential rehab project of a historic building and targeting 25 units in MA.Can someone recommend a cost per unit for property management companies to use as a reasonable baseline as we obtain estimates? 

I would also do a basic checkup.

CRA will treat the LLC as a corporation; basically a mismatch.Thirdly, 1031's should NOT be used by a Canadian citizen paying CDN taxes.

Understanding the basic repair vs improvement will be handy. 

I was able to get a motivated seller deal, but the seller is basically looking for cash buyers only.

I basically said the same thing. 

As a community i bet we would all crowdfund a project with a quick turnaround (3-6 months) in between our deals for a reasonable return (5-10% depending the experience of the developer)2.

Being all in for 65K would still be on okay deal for my first - projecting $200 cash flow and a 9% ROI and leaving 20-25K in the deal after refinance.

I do it by first making some basic selection out of the tax sale list and then sending letters to the owners.

If you go that route you need several documents to protect you and effectuate taking over mortgage payments (POA, notice to release, etc. )If you only have a strict 90 days to do this then in your agreement that should be spelled out but several things depend on your relative and how secure he wants to be in the fact that you will basically hand the house back over to him at the end of 90 days if you haven't sold it.