Its generally a little bit higher than natural gas because NG is piped in and not hauled in.

Hi @Karen Ng,5% property management seems on the low side, depending on the type of manager you'd take.

It was a huge test on my patience, decision making skills and people management abilities.Work Done: Full Vinyl Siding jobFull pex plumbing installationEntire house Sheetrock, paint, carpetElectrical rewiring and updatingPros: House had a brand new shingle roofHuge basement, back yard, and two porchesPrevious owner installed wood tongue and groove throughout the living room and kitchenBrand new 96% efficient NG furnacePlenty of parkingSolid foundationCons: Located on Main StreetOnly has a 100 amp electrical boxVery little insulation in walls and joistsHigh taxesLessons Learned: Stick to your gut when making offers.

There was no insulation in the walls & a NG heating bill we found (October 1955) was for $3.42.

NG furnace. 

Contact a contractor and see what they will charge per unit to install Natural Gas (hot water or hot air) and then maybe just do the 1st and possibly the 2nd floor with NG.

They had upgraded the roof, complete border fencing, big new shed, NG whole house generator etc etc. 

Not all lenders do this and like @Kevin Romines said, Fannie n' nem do it now.  

. ;-)@Albert Ng, it's nice hearing from you.

@Christpher Schuebel love it BUT venting, 240v line or NG lines could be a big issue.