The vacant plot across from my house and was recently sold and today the new owner came to introduce themselves. They also wanted to ask permission to dig up my driveway to get sewer access. My driveway is a long gravel one full of weeds which I hate! They were vaguely offering to compensate us for our trouble with some extra gravel and a new heavy duty weed membrane. They seemed to think the work would be one day of disturbance. Any pitfalls I should be aware of in the arrangement?