We moved from renting a condo like you describe to a house where there is no gas and almost everything is electric. Well means water is free but the pump runs on electric. We have oil fired heat (but the fans that blow the air into the ducts are electric) called forced hot air. In the summer the same ducts bring the AC which is electric. Our stove, fridge, microwave, dishwasher, washer & dryer, hot water heater, water pump on the well, tv's, smoke alarms and lights are all electric too of course. I almost had a heart attack seeing the first electric bill 14 years ago since we used to pay about $20/month since everything was gas in our 1,000 sq. ft. condo! Our house is 2600 sq. feet about 40 miles NE of Boston (cold winters, hot summers). We now pay about $200 - $250 (summer AC) in electric monthly, no gas, no water, about 600 gallons of oil per year (at prepay this year of $2.74 per gallon but right now without a contract it is about $4 per gallon), so that could be as much as $2400 for heat which is $200 monthly. We also buy at least 1 cord of wood at about $250 for our wood burning stove, which we use more as an atmosphere maker than a house heater, although it makes the living room and kitchen nice and toasty, but it is too much work for me to schlep in wood for every day. Besides the mortgage there are the town taxes ($8,000/year in our town, we are on 2 acres), the home owner's insurance, the snow removal in winter ($35 per plow) and mowing in summer ($100 per mow), cable/phone/television/cell phones (our FiOS bundle is about $250/month for all four (for a house with 4 people with cell phones).
Also remember that there are closing costs and fees when buying a house, usually a point or 2 (percent) of the amount you are borrowing, and some kind of paperwork fee and title search fee, and just because fee, etc.etc.
Smart of you to get an idea of the costs of front, we did not, and were surprised but paid them anyway. Good luck.