Get your insurance in business name, utilities can be put in business name.

If you have your business incorporated or at least a DBA Versium I've been told Versium is a solid choice for skiptracing. 

Friendship and business don’t always mix well, so it’s critical to use a solid lease and treat this as a business arrangement.

@John Davey Interest on a home equity loan used to purchase or improve rental properties is deductible on Schedule E as a business expense, but not on Schedule A for your primary residence.

The other is a smaller operation which does a lot of business in the specific neighborhood the house is in.

There are always opportunities in buying real estate, businesses, companies, etc., as long as you know (or think you know) what you are in for.

So, get busy on your listings. 

Do you work with any specialty tax firms to help us small business owners get access to R&D tax credits, cost segregation and other specialty tax credits?

That's just the nature of this business. 

They lower taxable income for federal taxes but not for FICA.However, employer contributions made by the S-Corp are not subject to FICA and count as a business expense.Make sure your W-2 correctly reports wages, deferrals, and FICA wages.