Cool Roof Requirements: Gresham vs Portland
How do cool roof requirements rules compare between Gresham, OR and Portland, OR?
Gresham, OR
Multnomah County
No data available yet for Gresham.
Portland, OR
Multnomah County
Portland encourages cool-roof and ecoroof installations through Title 33 zoning incentives and BES stormwater credits, addressing urban heat island effects and combined-sewer overflow reduction simultaneously.
View full Portland rules →Key Facts Comparison
| Fact | Gresham | Portland |
|---|---|---|
| Manual | - | BES Stormwater Manual |
| Incentive | - | Density and stormwater credits |
| Standard | - | Oregon Reach Code aligned |
| Retrofit funding | - | PCEF available |
Highlighted rows indicate differences between cities.
Gresham FAQ
No FAQs available.
Portland FAQ
Are cool roofs required on new homes?
No mandatory cool-roof rule exists for single-family construction, though state Reach Code and city incentives encourage reflective or vegetated roofs voluntarily.
Do ecoroofs reduce my stormwater bill?
Yes. BES grants a stormwater discount when ecoroofs meet performance criteria in the Stormwater Management Manual, and verified installation is required for the credit.
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