Originally Posted by wave9x
Do you think there is a significant difference in value between having a gas fireplace vs having a wood burning one?
The nice thing about your situation is that currently you can claim to have wood burning fireplaces even if you were to convert them to some gas log set-up. The gas logs I put in were formal looking in the living room and I filled the base of the fireplace in the family room with sand and put a driftwood looking thing on it. The living room was painted white brick and I doubt it ever would have been used if wood burning was the only option.
I found the gas flames as relaxing/mesmorizing as a wood fire and it was certainly safer. I missed the crackling sound of sap exploding and the smell but you can buy stuff like "Campfire Memories" or cedar incense to compensate.
I suspect more and more places will be cracking down on burning wood for environmental reasons. I am not sure burning natural gas is that green long term either. Modern fireplaces are not usually designed for heating so much energy just gets sucked up the chimney including warm air in the room that gets drafted. At least with gas you can close the damper a bit.
Long winded way of saying I am not sure the answer to your question. A good friend of mine develops and sells high end real estate around you. He always has the fireplace going when showing a property. Home and hearth trick I guess. He also makes sure the kitchen has the aroma of fresh baked cookies too.
When I did intimate interior gardens people always wanted to incorporate fire and water features if they had the money.