TL;DR (generated, confidence: high)

This page guides users on filling out three categories of forms required for ADU conversions: building permit application, trades applications, and project-specific forms, with detailed field completion instructions.

Key points:

Three form categories required: building permit application, trades applications (electrical/plumbing/mechanical permits), and other forms based on project needs (ADU conversions > Prepare > Fill out forms ↗)
Building permit application submitted as PDF on DevHub; select 'Addition' for new entryway/porch or 'Alteration' for removing/adding structural elements (ADU conversions > Prepare > Fill out forms ↗)
Contractor section requires CCB license number; if contractor not yet hired, write 'TBD' in business name field and update later (ADU conversions > Prepare > Fill out forms ↗)
Owner-performed work requires completion and submission of 'Owner Doing Work form' to acknowledge construction responsibilities (ADU conversions > Prepare > Fill out forms ↗)
For residential projects (1–2 family dwellings), owner must be listed as person's name, not LLC or corporation (ADU conversions > Prepare > Fill out forms ↗)
Valuation = total contractor labor + materials cost; if owner doing work, multiply material cost by 3 for labor estimate (ADU conversions > Prepare > Fill out forms ↗)

Entities: form: Building permit application · Owner Doing Work form | form_category: Trades applications | identifier: CCB license | system: DevHub | project_type: ADU conversions

Changing a commercial space > Prepare > Fill out forms

← Changing a commercial space > Prepare

Breadcrumb: Home > Permitting & Development > Commercial Permits and Inspections > Changing a commercial space > Prepare > Fill out forms

Source: Changing a commercial space > Prepare > Fill out forms ↗ Last modified: Sun, 19 Apr 2026 20:06:42 GMT

Fill out forms

This page provides guidance on how to fill out forms you might need for commercial alterations.

If you have questions about how to fill out any of these forms, schedule a 15-minute appointment with PP&D ↗.

For all projects

Building permit application

The building permit application is fairly simple. Your commercial alteration project will need a few details about the owner, contractor, and location, and valuation.

Later, you’ll submit this application to our online system, DevHub ↗.

Commercial systems development charge (SDC) form

This helps us assess what fees to charge to help offset the impact your project will have on City services. To fill it out, you’ll need information about your project site’s square footage and, if your project involves plumbing, the number of fixtures served by the meter. NOTE: This might require you to ask other tenants in the building to count their fixtures.

You’ll submit this form on DevHub as well.

For commercial alterations

Electrical permit application

Licensed electricians can submit this application on DevHub. If the electrical work needs to have plans, the licensed electrician should submit a permit application request for Trade Permits with Plan Review.

You can find more information on electrical permits here ↗.

Mechanical permit application

Licensed contractors (and in some cases, the property owner or their representative) can submit this application on DevHub. If the mechanical work needs to have plans, the licensed contractor should submit a permit application request for Trade Permits with Plan Review.

You can find more information on mechanical permits here ↗.

Plumbing permit application

Licensed plumbers can submit their applications on DevHub under Trade Permits. If the plumbing work needs to have plans, the licensed plumber should submit a permit application request for Trade Permits with Plan Review.

You can find more information on plumbing permits here ↗.

Life Safety Completeness Checklist for Commercial Permits

To fill this out, check the applicable rows and cite the page number of the plan set for each document.

Building Code Summary worksheet

Project designers should use this form to analyze a building design and demonstrate that it complies with the Building Code. This form isn’t required for an application. It’s meant to be a helpful tool.

Fire Sprinkler System Permit application

The company who will install or alter the fire sprinkler system should fill out this application. They should submit this application to Portland Fire & Rescue only after Portland Permitting & Development issues your building permit.

Fire alarm permit application

The company who will install or alter the fire alarm system should fill out this application. They should submit this application to Portland Fire & Rescue only after Portland Permitting & Development issues your building permit.

Shell permit acknowledgement statement

If your project is leaving some of the space unfinished, we'll need this form. This acknowledgement must be signed by the property owner or their authorized agent.