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I selected Keystone for basement work four years ago and then again this year. I interviewed other companies; some were cheaper but not better. Keystone stood out for competence in all regards. They spent a lot of time with me discussing the causes and remedies for my basement water issue. They recommended preliminary exterior steps I should take even though those steps involved using contractors other than themselves. When I eventually did hire them they did a detailed assessment of the project and emailed me three firm quotes with three different options. They give you the specs of their sump pumps, which I compared to other companies' quotes and to recommended specs on internet sites. When I selected an option they provided me with a written contract. They show up when scheduled and the crews are businesslike and efficient, yet gracious in answering questions during the work. When they are done they give you a warrantee in writing. The pumps they installed post email notices to me anytime power goes out (they have battery backups) or they begin or stop working, along with how many gallons of water have been pumped out. Even now if I have a question I just talk them and everyone at every level of the company is what they have always been: customer-oriented, knowledgeable, and patient. I would sum them up by saying they deliver their services the way I wish all residential contractors would: professionally, in writing, competently, and cordially.

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