This handout describes the information needed when applying for a permit to increase the floor area (“envelope”) of an existing one or two-family dwelling in the City of Portland.

This handout explains permit requirements to convert an attic, basement or garage of a one or two-family dwelling to livable space in the City of Portland. read about requirements before you remodel an attic, update a basement or do a garage conversion.

You may have specific design details that are not finalized. You can still apply for a building permit. A deferred submittal allows you to submit those details for review later. This guide outlines requirements, review procedures, and submission steps.

Find the online form, materials, and instructions to prepare a public works permitting final plans submittal.

Use this form during the concept development or design development steps of the public works permitting process when additional information is requested to complete the review.

Applying for a building permit for your commercial projects? You'll need to submit specific documents and plans. Find submittal requirements for commercial projects for new construction, additions, alterations, and change of use or occupancy.

Construction contractors seeking to grow their businesses through public contracting must meet general contractor requirements and added construction criteria. Learn about those requirements, opportunities to increase workforce diversity, and how do find and compete for construction contracts.

Get information about structural and engineering requirements for one and two-family residential projects in the City of Portland.

You've corrected your plans in response to the checksheets. Now, learn how to organize your updated plans with the old plans, complete the checksheet response form, and schedule a drop-off appointment. Find the checksheet response form here. Note: This is for corrections to Paper Plans only!

Get information about structural engineering and design requirements for new and existing commercial buildings and projects in the City of Portland. Find information about phased seismic agreements, updated seismic cost triggers for URM buildings and seismic evaluations.

Find the online form, materials, and instructions to prepare a public works permitting concept submittal.

Get application requirements for a one or two-family home addition that builds up or builds out. Find documents and plans you'll need to apply for a permit.

Find the online form, materials, and instructions to prepare a public works permitting design development submittal.

When developing a property, permittees may be required to construct green stormwater infrastructure in the right of way as part of their Public Works Permit. Learn more about those requirements, options, and fees on this page.

This page details the sanitary sewer service options that are available to builders and developers who are considering Middle Housing Land Division (MHLD) projects in Portland.