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It would be impossible to tell based on the information you have given. I work for a school district in SE Michigan and we pave a lot of parking lots. If you have not had it designed and bid, you are open for a lot of disappointment. There are a lot of good asphalt contractors out there and a lot will take you to the cleaners. On paving jobs, what is underneath the asphalt is probably as or more important than the asphalt itself. If you don't have a solid base, the asphalt will move and crack. Secondly, you need to know what you are putting on the asphalt--cars, trucks, buses, or storage. That governs the thickness and type. Generally, asphalt is put in with two "lifts" of layers, the bottom being the base and the top being the wear. These can be several inches for the bottom and 1 or two for the top. As far as removal, what has become almost a standard is to mill or grind the top and spread it out and roll it as a base for the new layers (if you have the elevation). The only way to really tell if the job you want is too expensive is to get several contractors to bid apples to apples paving with identical specifications. You also may want to talk about the what if when they take the old surface out they find soft spots--cost to bring in limestone to stabilize the base. Finally, if you don't want to go through the specs and bidding--find out who some reputable contractors are that others have had experience with and stick with one. You may pay a little more, but in the asphalt paving, you generally get what you pay for. Beware of contractors that stop by your door with a truck and a 6 foot paver and offer you a good deal--guaranteed the job won't last. FWIW, JU
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