If I were sell my dental office condo to my tenant would it be possible to defer capital gains taxes (purchased in 1979 for $70,000) by designing an agreement more like a lease with option to purchase?

A sole practitioner or attorney with little scale might be much higher as you pay for their learning curve. 

CALL YOUR LOCAL COSTAR SALES FOR PRICE - But for sole practitioners, you may be looking at $300+/month.For comps, I have to begrudgingly admit, CoStar is probably best. 

We then took the profit from that and built a 15,000 sq. ft. building down the street whcih we leased to a State agency, then a medical/dental clinic for an Indian tribe, then ....

Hi there bigger pockets!!! My name is Anna Ayala and I'm a resident of the great state of Texas!! I am super excited to embark on my adventure into real estate investing! So here is the deal I have two little boys, an...

An individual can still offer financing on their own property without so called licensed practitioners who are looking for job security getting their hands in your pie.

(30% is to make up for the lost benefits like health, dental, 401k, etc.)

The 1st floor is a 5000 sq ft former dental office.

There are likely certain lease protections built in for the tenant.For an attorney get a commercial attorney and not a residential real estate attorney or a general practitioner.

It's kind of like taking a friend's dental xrays to a random dentist to have your teeth worked on.