Many commercial leases have custom clauses. 

Hello everyone, I have recently gone under contract on a property and was able to agree to a private loan with a family member to purchase and renovate.

Depending on your income needs, pulling equity out and lending privately combined with a fulltime or part time job may be another option that doesnt bring as much boom or bust risk as flipping. 

The english version: https://www.imovirtual.com/en/# .You have private and agent postings.Regards, Rui

And a general contractor would NEVER sign a customers contract 

If you’re looking to connect with private lenders, start by tapping into your existing network—friends, family, and colleagues can often be a great starting point.

As noted, if your options are Reg D, private offering vs fully registered public offering, even if you are talking Pink Sheet (OTC) stocks, you have public filing costs, annual audit requirements, and likely more on-going expenses that have to be covered by the property(s) owned by the offering.  

I'd lower the price slightly below your competition and get real reviews.Be customer focused.

I still have that house and it rents for a grand these days. my first house was late 70s that I bought  in those days it was 80 10 and 10  you need 10% cash and normally a private HML would give you the 10% second and bank was the first.. interest on the first was 9% second was 15%.. this was before the Carter interest rate run up.. paid 80k for it in Milpitas CA.. and it was brand new bought it from Shapel . 

I also invest in other assets such as stocks, and private companies as well.