Unanticipated Expenses in Building new pool
Hi all, I am in the process of getting estimates for a new pool in Rockland County NY. I am trying to estimate all the possible unanticipated expenses that may come up during the building of the pool once we sign a contract and they start building. I have a budget that I want to stick to. We have met with one builder so far, and plan on meeting two more. So far, these are the items that I have been told, or have read about that may increase cost/cause problems:
1. We are on a slope and will definitely need a retaining wall.
2. Drainage issues. We may be required to build some type of drain system to make sure the area taken up by the pool does not cause flooding issues to our neighbors (something like that). Will be determing by building dept, i think.
3. We may run into water issues when they start digging.
4. We may hit rocks, bolders or bedrock when they start digging.
5. The weight of the trucks coming in may damage: Sewer line, tree roots, dry well, old septic system.
6. We are unsure of the situation of old septic system - whether it is a tank or field. Field can cause problems with gravel, tank may collapse, have to be removed, etc...
I am in the process of trying to find out as much as I can about each of these issues, so I can make a reasonable estimate. I found a Soil survey of Rockland County from the USDA that shows my specific neighborhood. I am trying to understand what these two items mean:
1. Depth to Water Table 1.5 to 2.5 feet. (Feb-Apr)
2. Depth to Bedrock - more than 60 inches.
Does this mean once they dig past 1.5-2.5 feet they will hit water and it will cost me extra to pump it out? Does it mean when they try to dig the deep end of the pool they will hit bedrock, and it will cost me extra to do something to break it up?
Please let me know what other unanticipated costs you have run into. Thank you so much. We are trying to make a decision as soon as possible so we can get on the schedule soon in order to be able to swim this summer. Thank you very much for any help/advice you can provide.