We had an excellent experience with Hacker Services from start to finish.  Roy and his daughter, Crystal, came to do an estimate within a week of our original call.  We had already gotten estimates from a couple of other companies, and Hacker was the highest by far.  However, Roy inspired such confidence in that first visit that we concluded we should hire him in order to get the job done correctly, even though it would cost more.  Roy looked around our yard and had a good eye for planning the project and noticing things that should be done to improve our situation, such as noticing that our air conditioner unit was not level and offering to pull an old concrete base from a basketball net out while doing the pool job.  (In all fairness, other companies that came in with lower estimates were rather perfunctory in their efforts and did not include the extras Roy suggested, such as the brick paver sidewalk and patio). Roy and Crystal are both very nice, polite, and professional people, and they were both present the whole time for our four-day job.  Roy runs a very hard-working, efficient team, and there was a clear sense of camaraderie among the crew.  Roy met with them each morning to explain the day's tasks, and they all seemed to work together very well.  When someone needed to come inside the house (e.g., to turn off power to the pool lights), they sent Crystal in (a small thing, but a comfort to a woman in the house alone).  Each evening, they cleaned up after themselves before leaving.  We very much appreciated their attention to detail, and the extras they added or suggested as the job progressed.  For example, they installed pvc pipe in a couple of locations under the new sidewalk and marked the spots so that we can easily add electricity or water without disrupting the sidewalk.  In the middle of the job, I asked if they would extend the sidewalk job we originally discussed and add a patio (involved removal of more concrete, laying more bricks).  They readily agreed, did a great job, and quoted a very reasonable price for the additional work.  At the end of the job, we had a perfectly graded and seeded back yard and reinstalled fence.  I was surprised that even the invisible fence for the dog was undamaged despite the frequent large truck traffic.  The work they did on the sidewalk and patio is very neat and beautiful, and we are completely happy with the job.  We have to dig to find anything to complain about (e.g., cigarette butts in the yard, a couple of damaged planters, missing hose nozzle), but given the size and complexity of the job, we are delighted with the end results and would certainly recommend them.