(ie, lot size, variances, easements etc)They've been very helpful to me over the years. 

.: Quote from @Alan Asriants: Hey Carlos, all depends on your lot size, what kind of unit you can build there and the rental return you can get. 

Depending on the size of your portfolio and what you're doing in real estate, it may or may not be worth it setting up all these entities.I don't run any other businesses. 

This could cost around $500 to $1,500 per unit, depending on the size and complexity of the project.Certifications: There may be additional costs for certifications (such as HERS ratings) or third-party testing to verify the energy efficiency of each unit.For a 90-unit project, you could be looking at costs in the range of:$45,000 to $135,000 for energy modeling and certification (depending on the cost per unit).For a 112-unit project, the costs would likely be:$56,000 to $168,000 for similar services.Tax Credit Calculation:If you meet the energy standards, you can claim up to $2,000 per unit.

Depending on the size and how difficult it may be to get to it, I've paid about $5-8k.

Size I believe does matter.

This is why so many people earn large sums of money quickly (lottery, sports, entertainment, etc.) and end up broke.Take Dave Ramsey's Financial Peace University.

The one big caution I would have for investors on the design is don’t make the room size too small.

PM's of a certain size with scale can be.- PM's usually have software and partnerships you do not.- Full time maintenance, reservations, cleaning staff- Additional marketing budgets and resources.This is a brief list but a good PM can make more revenue than you can and can offset their fee. 

You can use a tool like AirDNA to get estimates of property performance in your specific market and with your typical size and configuration of home.