Purchase offers included always include a Non-Compete Agreement for the Seller and any family members working in the business. Most Buyers want a 5 year Non-Compete Agreement, in some cases a 3 year agreement will suffice and may be acceptable. The Non-Compete Agreement also has a geographic term usually in miles, cities or counties where the business operates.
In some instances such as retail businesses the geographic term may be very limited such as 15 to 25 miles. On the contrary with manufacturing or distribution businesses the geographic term may be for an entire county, state or even the US depending on the service area for the business.