It depends on the job. For asphalt resurfacing, depending upon the temperature of the day, one should allow 2 to 6 hours before using the new lot. Sealcoating needs a 24-hour drying (curing) time after work is completed. Do not allow traffic on your lot before the end of the 24-hour drying period.
For all other services, a set time frame should be suggested to you from your contractor.