I'd be more worried about supplies to build houses (eg wood for the framing). 

He seemed very authentic in our discussion and showed charts indicating how the cost of supplies has increased more over the last 2 years than they did over the last 20 years.  

Yes we ask towards the top of the market, but I anticipate my holding times (which are in line as the short supply in my area is able to work for me) and build that in. 

Luckily mine was zoned commercial and so the regulation didn't effect me and actually helped as it greatly reduced the supply in the market. 

Medford (North Boston) happens to be a low supply/high demand market so I absolutely need to get more comfortable with consistent rent increases but those increases need to be researched and in line with the market. 

This is where smoke/CO detectors, grounding, electric garage door reversers, and other goodies came from.If the municipality performing the U&O calls out an item, Seller is stuck with resolving it either by fixing it or negotiating it with the buyer.

We supply kitchen appliances for all of our units, on the SFR's we supply dishwashers because they are in nicer neighborhoods where a tenant would expect it.  

As to others points rents will change with supply conditions.

Though I have not personally contributed to these investments for tax credits, I have personally seen these investments in action and these investments can help provide more supply of housing and development that would otherwise not be there.

Finally, The rent control discourages further development, limiting supply which results in higher rents.So rents go up, but the rent control advocates are too uneducated on the economics of the rent control policy to see their role in the rent increase.Another consequence of rent control is no value in keeping the property as nice.