Hello everyone. I've gotten some great tips and information going into having a pool built. We are about 3/4 of the way into our build here in North Texas and a question and concern came up. Last week during the layout and forming of the pool deck the crew I guess expressed concerns to their boss regarding the grade of the ground at the rear of my pool. The next day I received a call from the PB project manager that he was meeting the concrete deck contractor out at my house. They discussed putting in more drains and such and talked about putting a footer all along the back of the pool. At that point the project manager discussed with me having a wall built and what my responsibility regarding cost was. Now just to clarify when they came out to my house to form a plan to bid to build my pool they surveyed the land and knew what the grade was. Never was their any discussion regarding a need to have a retaining wall built. Also during the design part we had originally discussed a grotto but changed it to a waterfall/weeping wall instead. Our pool builder used those exact words when describing it as a weeping wall/waterfall. On the contract of course it said weeping wall. So they built a weeping wall and not a waterfall. I had expressed concern to the project manager from day one when I saw the amount of stone but he said it would be enough. After the stone guys finished it was not what we had wanted. We discussed this with both the project manager and with the salesman/owner. After some discussion it was agreed to complete the waterfall. No more stone was bought but they probably had 2 guys for the better part of an afternoon here to finish this. They did pour the deck and added drains and a sloppy footer along part of the rear but not what they had discussed with me. In the meantime I got 2 bids to build a retaining wall of roughly $800-$900 depending on my choice of stone. I got a call yesterday from the project manager giving me a timeframe for finishing out the pool next week. He also mentioned that I now owed $500 extra for their guys to finish the waterfall. My thought is if I owe for the waterfall completion then he should own up and either build a retaining wall on the back of pool or I'm deducting the $500 they say I owe and $300 from their bill. Any thoughts on this would be appreciated.