Ive read many comparisons between propane and natural gas, but had a
question that i havent found answered anywhere yet.

i am in the process of purchasing a building in massachusetts. it
currently has three propane tanks which provide the fuel for the
heating systems. i am converting the building into loft spaces for
living - the project is large and i am phasing it - in the first
phase, i would like to just use the existing propane tanks as fuel but
eventually, in a later phase, convert to natural gas.

my question is, will the system installed to heat the spaces with
propane (ie piping, meters, boilers, etc) be easily converted to
natural gas at a later date?

for example, will the piping run through the building for propane work
for natural gas as well, or is different diameter or type piping
required?

as for the boilers, it sounds like propane boilers are easily
converted to natural gas, but what about the meters?

any input would be appreciated!