I've tried to cut corners with the rehab and get burned by water damage from a leaking roof (safe to say I went over 50% expenses on that property...).

Sometimes there is a minor leak or something but nothing major.

Primarily interested in the following:- Utility (water/gas/elec) expansion requirements/costs- Zoning restrictions- Projected permitting/inspection cost analysisThank you in advance!

Currently there is one oil tank supplying fuel to two oil furnaces and I'm looking to convert it to two separate natural gas furnaces.There are already two separate gas meters running to the property, and each unit has a gas range and a gas water heater, so I believe the lines running to the property could handle two new high efficiency gas furnaces and tankless water heaters.Anyone have a good contractor in the Boston area who you'd recommend to do the work? 

One of my properties has a slab leak in the bathroom.

Work just got underway and master bedroom and bath shows that there is leak which was previously patched going to foundation.

Gas heat. 

This is to allow them storage to keep the place tidy, but mainly because if there is a water leak I want them to be able to kill the water immediately.

Assuming this is the only place in the house where you had water leaking in, the picture you posted is not a huge problem.

The drain pipe from the kitchen is leaking into the basement.