Concrete Driveways & Sidewalks in East Renton Highlands, WA

Driveways & sidewalks in East Renton Highlands: what to know

A re-pour is not free of stormwater consequences. King County’s residential drainage review counts new and replaced impervious surface together and names driveways among the surfaces it covers. A project under 2,000 square feet of new and replaced surface and 7,000 square feet of disturbed ground can land in the no-review tier, if the other conditions hold. A new patio poured in the same job counts too.

The street end is a separate question. The county says a direct driveway connection to a maintained county road needs no right-of-way use permit, but the connection still has to meet the King County Road Standards, which include a drawing for an urban residential driveway approach.

Permits and rules in East Renton Highlands

The Department of Local Services, Permitting Division, handles right-of-way use permits, building permits, and grading permits for unincorporated King County. A driveway no more than 30 inches above grade is on the county’s list of work exempt from a building permit. Creating more than 2,000 square feet of new impervious surface, or grading in a critical area, calls for a clearing and grading permit. Before pricing a re-pour, we look up the road standard and drainage review tier that fit your lot.

Rules change and vary by parcel, so we confirm the current requirements with the city before we start.

How we approach it

Separate your driveway from county right-of-way before forming the apron
Add new and replaced concrete together to find the drainage review tier
Pitch the slab so runoff can disperse across your own lot
Probe the base for a dense layer that holds winter water

For the full process, see our Concrete Driveways & Sidewalks page.

Building in the cold months? See our guide to winter concrete pours.

Our driveways & sidewalks work, serving East Renton Highlands

Examples of our work. We build driveways & sidewalks in East Renton Highlands and the cities around it. See all of our work

Questions from East Renton Highlands homeowners

Do I need a King County permit to replace my driveway in East Renton Highlands?

A driveway no more than 30 inches above grade is exempt from a building permit under the county code, and a direct connection to a maintained county road needs no right-of-way use permit. A critical area or the 2,000 square foot thresholds can change that, so we confirm first.

Does a bigger driveway mean stormwater review here?

It can. The county counts new and replaced impervious surface together, and driveways count. Below 2,000 square feet, with the other conditions met, no review applies. From 2,000 to 5,000 a simplified review does, and above 5,000 a civil engineer generally prepares the plans.

My driveway crosses a roadside ditch. Does the culvert need a county permit?

An older county bulletin lists a culvert crossing or replacement in county right-of-way as right-of-way use permit work. A new or changed crossing may need one, and the pipe size can matter for drainage review. We confirm with Permitting before building over it.