ADU conversions > Get permit and start work — Intro
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ADU conversions > Get permit and start work
Source: ADU conversions > Get permit and start work ↗
Converting an existing part of your home to an accessory dwelling unit (ADU) increases housing and boosts your home’s value. These pages explain the permits you'll need for an ADU conversion and how you can apply for them. Use the navigation menu to learn more about each step.
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Get permit and start work
Once we issue permits to you, you’re almost ready to get to work. Before you start, there are a few important things to keep in mind.
You should schedule a free consultation with us ↗ before you start construction. You can learn about the inspections you'll need before, during, and after the work.
For projects that need to protect trees on the property:
If your approved project plans require tree protection, you'll need to install tree protection fencing before you start any ground disturbance or work on the site. You'll also need to get these protection measures inspected and approved.
The inspection of the trees and protection fencing before you start is called "507 - Tree Preservation."
Inspection #507 must be approved before you can request any other inspections.
For projects that need to take erosion control measures:
Your project will need your erosion control measures inspected before, during, and after your project is done.
These are the basics of erosion control:
- Install fencing, netting, or blankets to prevent loose soil from leaving the project site.
- Remove any soil that enters the public right of way ↗.
- Protect stormwater drains from extra sediment with debris filters.
The inspection of these measures before you start is called a "200 - Pre-construction erosion control." See the next section for details on getting an inspection.
Because erosion control inspections happen before, during, and after building, we have a slightly different guidelines for requesting this kind of inspection:
- Call the IVR ↗ line at 503-823-7000.
- Give your permit number or IVR number when prompted.
- Call before 6 A.M. on the day you'd like an inspection.
- Calls after 6 A.M. will get on the list for the next day.
- If you have any problems, call 503-823-7300.
Here's a checklist for what to do before your 200 inspection. It's not meant to be all-inclusive or limiting.
- Install a stabilized exit using >1.5" clean rock or an approved alternative. (Not applicable if access is paved.)
- Place inlet protection at the nearest downstream water inlets and any water inlets onsite.
- Install perimeter controls such as sediment fence, wattles, or approved alternatives—even on flat sites.
- Post the Erosion Concerns Hotline sign ↗ and fill it out completely.
- Protect all sensitive areas, including environmental zones and tree protection areas.
- Keep approved erosion control plans onsite and ready for review. (Not applicable if you have a simple site ↗.)
A checklist for erosion control during your project is in the next section.
A checklist for erosion control after your project is done is in the section on inspections.