Extending a driveway approach, or driveway curb approach, is a simple process that’s the same as if you were to repair or replace it.
Why do you need to extend your driveway approach?
Usually it gets extended if your original approach is too small, or if you add an extension to your driveway
1. Measure the width of the driveway, and measure the width of your property between both property lines.
In San Jose, for example, the width of the driveway and parallel sidewalks can be no more than 50% the width of the property.
2. Make a drawing of the proposed changes to the driveway and submit to the city for approval and permit.
Guidelines and permit application can be found here: https://www.sanjoseca.gov/DocumentCenter/View/4790
3. Permit approved, begin work