Many studies have demonstrated that rent stabilization is especially helpful for longtime renters who are disproportionately likely to be older adults. 

I tend to aim for blue collar neighborhoods where cap rates are closer to 10% and where I have tenants who actually live like adults.

I'm thinking to build  SFH with 5 to 6 bedroom with all en suite master bathrooms 2500-3000 sf AC area with 2 car attached garage, swimming pool, large covered rerar porch  and nice entertaining outdoor space.

She volunteered the information, and he filled out a rental application, and I've run the background check -- he's approved to stay there.Here's the question -- though the lease states that an additional adult should be added to the lease if approved, the tenant doesn't want her boyfriend on the lease. 

http://bniajfi.org/vital_signs/This data is based on 2010-2015 and looking at changes from 2014-2015Washington Village /PigtownPopulation5th Lowest neighborhood Total Population5th lowest neighborhoodMale Population3rd lowest neighborhoodfemale populationTied for First Lowest neighborhood Population identifying their self as other race4th lowest neighborhood populating earning 24-40k a year2nd Highest affordability index for rent - tenants paying more than 30% of total household income3rd highest number of housing vouchers per 1000 rental units3rd highest mortality rate (death)3rd highest for Part 1 Crime ( Homicide, rape, robbery, assault, burglery larceny, auto theft4th highest for violent Crime3rd highest for property crime2nd highest for rate of adult arrests1st highest for rate of domestic violence2nd highest for rate of common assault2nd highest for rate of narcotics related calls2nd highest of rate for motor vehicle accident calls3rd highest for jevenile arrest rate3rd highest for residents that work outside of Baltimore 5th highest for reports of dirty streets2nd highest for reports of clogged storm drains

Brand new when this tenant (one adult, one child, one dog) moved in, and they were there 17 months. 

If you haven’t already seen it, I recommend checking out the Bigger Pockets Ultimate Beginner’s Guide and the entertaining and informative BP podcasts.There are also offline groups you can attend for in-person networking, like the Rhode Island Real Estate Investor Group in RI or Black Diamond REI in southern Mass.As far as buying investment/income property, have you talked to a mortgage person to see what price range you can reasonably afford?

I'm an adult too

Over the holidays after many calls from these homebuyers wanting to buy one of my rental properties I entertained the idea and signed a contract to sell a property of mine. 

Once you have that answer, do that.This is not legal advice, entertainment only.