Finding properties $200k or less with 30% margins in bigger cities/decent areas is tough in this market cycle.

I would do what Henri suggests above and this is a really good time to clear out any marginal performers, the market is high now and poor performers will follow the market down faster and deeper when that happens.

Pit bulls kill more people by a wide margin than all other breeds COMBINED.2017 analysis and 13-year summary 39 U.S. dog bite-related fatalities occurred in 2017.

I just want some plain old decent middle class tenants, with plenty of income margin. 

Greetings,I’m new to real estate investment and I was reading one of the BRRRR blogs and it stated that one of financial goals regarding Margin should be at least 20% of the value after remodel.So here is my question, Does it mean the amount you invest in the property after you rehab should be at least 20%.  

Give yourself the margin necessary to address the level of risk you are comfortable taking on and then move forward.There are no guarantees in anything you do.

The combination of some over supply and out flow of tenants will put pressure first on the A class apartment rents then B class at the margins.

That's a pretty tight margin deal so make sure you have the numbers nailed down.

You certainly could get better margins elsewhere but Cambridge is a timeless market and the demand for housing continues increasing.

If you can pull equity out and the numbers still look good that will get you there a little faster but always make sure you have a safety margin