How can anyone investing using hard disciplined numbers possibly win in that kind of environment.  

Going and checking for mold is useless at this point without knowing there is a wet environment (and a whole lot more expensive).

In this environment just worry about the present.  

But even so, just taking the lease/rent expectations vs. the mortgage repayments, how could one in this environment hope to be cash-flow positive from the outset or even use the 1% rule?

After my wedding next year, my fiance and I were considering renting a new place (for a change in environment).

As you learn more, you will find that you have more strengths than you originally thought.B) What is your market/environment doing?

A great environment to raise young kids and make them contributing members of the world community.

We are in a low supply environment.  

It saves time, money, and also the environment.

@David FernandezTechnically your boiler is an HVAC system (heating), but I gather you are contemplating replacing the hydronic heat with forced air.If the property is in an environment where there is a significant cooling season, then the extra cost of switching to a central air handler (i.e. heat pump w/ ancillary gas for additional heat), removing the radiators and lines and installing ductwork may make longterm sense.If there is not a significant cooling season, then it would be far more economical to replace your old boiler with a new high-efficiency condensing gas boiler (~95% efficient).