Retaining Wall project

Retaining Wall Permit Plans

The site plan, wall section and engineer’s stamp a retaining wall permit asks for: where the wall goes, how tall it is, and how it holds the soil.

Permit needed?
Usually for walls over about 4 feet, or walls holding up a driveway or building.
Who reviews it
Building department, sometimes engineering or public works
Stone retaining wall in a sloped garden
Usually needs
  • Site Plan
  • Engineer’s Stamp

Drawings you’ll need

What a Retaining wall Permit Asks For

Counties don’t all ask for the same drawings. This is what they usually want for a retaining wall; we confirm your county’s list in the quote.

Plan review

What the County Checks on a Retaining wall Permit

The items reviewers look for first. Every sheet we draw shows them.

  1. 01

    Wall height

    Height at the tallest point and at each end.

  2. 02

    Location

    Distances to lot lines, buildings and slopes.

  3. 03

    Footing and reinforcement

    Sized by the engineer for the soil it holds.

  4. 04

    Drainage

    Drain pipe and gravel behind the wall.

  5. 05

    Loads above

    Driveways, fences or buildings near the top.

Permit sent back with comments? We revise drawings to answer each one, including plans drawn by someone else.

Permit Corrections

What to send us

What to Send Us

  • Required
    Property addressSo we can check the rules
  • Required
    Wall length and heightRough numbers are fine
  • Helpful
    Photos of the slopeFrom both ends
  • Helpful
    Soil reportIf you have one

Missing something? Send what you have. We start from county parcel records and aerial imagery, and ask if anything else is needed.

How it works

  1. 1

    Send the basics

    Use the quote form or WhatsApp. Two minutes.

  2. 2

    Approve your price

    We check your county’s requirements and reply with the price and turnaround. Nothing starts until you approve.

  3. 3

    Get your drawings

    Drawn to scale, ready to upload to your permit portal.

Retaining wall permit FAQ

Retaining wall Permit Questions

Short answers to what people ask before ordering. Ask anything else in your quote request.

Get Price Quote

Reviewed by the MakeSitePlan drafting team
Updated October 2026

Do I need a permit for a retaining wall?

Usually for walls over about 4 feet tall, measured from the bottom of the footing, or any wall holding up a driveway, building or slope. Check your county’s limit.

Does a retaining wall need an engineer?

Walls above the county’s height limit usually need an engineer’s sealed design. Our licensed PE partner can provide it where licensed.

Do I need drainage behind the wall?

Almost always. Water building up behind a wall is a common cause of failure; the design shows the drain.

Can I build two shorter walls instead?

Sometimes, if they’re far enough apart. Terraced walls close together may be treated as one tall wall.