Energy Trust of Oregon Crawlspace Rebates: 2026 Amounts and Eligibility

Amounts last checked September 28, 2026 against Energy Trust's current incentive sheet: Form PI 320I, version PI 0320I v2026.5 (rev. 260909), effective January 1, 2026. Energy Trust states plainly that incentives are subject to funding availability and may change, so confirm the current amount with your contractor or at energytrust.org before you budget around it.

What actually qualifies

This is where most homeowners get the wrong idea, so it is worth being blunt: Energy Trust does not rebate "crawl space encapsulation." It rebates specific energy-efficiency measures, and it pays per square foot of that measure. A crawlspace project typically touches two of them:

• Floor insulation — insulation installed in the floor joists above the crawlspace. This is the main one, and it is what most Portland crawlspace jobs claim.
• Rim joist insulation — the band of framing at the top of the foundation wall. Energy Trust folds this into its wall insulation measure rather than treating it separately.

What does not earn a rebate on its own: the vapor barrier, the dehumidifier, sealing the foundation vents, drainage work, sump pumps, and mold remediation. Those are moisture-control measures, not energy measures, and they are frequently the majority of an encapsulation bid.

The practical consequence is that a rebate offsets one line of your project, not a percentage of the total. On a $10,100 encapsulation, the floor insulation measure on an owner-occupied Oregon home earns back roughly $900 to $1,125 across the 1,200 to 1,500 square foot reference crawlspace, and only if the job includes new floor insulation at all. That is worth claiming, and it is not a reason to choose encapsulation.

2026 Oregon incentive amounts

Amounts differ by property type, which catches people off guard. Rentals and attached homes are paid more than owner-occupied single-family homes for the same work:

Savings Within Reach is Energy Trust's income-qualified tier, which pays the higher rate to owner-occupants who meet the income guidelines. If money is tight, ask about it specifically. It is not applied automatically, and the incentive is paid to the trade ally rather than to you.

Your home also has to be served by a participating utility: Portland General Electric, Pacific Power, NW Natural, Cascade Natural Gas, or Avista. Homes outside those utilities do not qualify no matter how good the work is.

Washington side of the metro

If you are in Vancouver, Camas, Washougal, or Battle Ground, Energy Trust still applies, but only through NW Natural, and the amounts are different, generally better for owner-occupants:

Note the asymmetry: an owner-occupied Vancouver home heated by NW Natural gets $1.25 per square foot for the same floor insulation that earns $0.75 per square foot across the river in Portland. If your home qualifies on the Washington side, the rebate is a materially larger share of the job. Rim joist work runs the other way: $1.25 per square foot in Washington against $1.50 per square foot in Oregon. Washington projects also require an active Washington contractor license rather than an Oregon CCB license.

The R-value rules that decide eligibility

Two numbers determine whether your crawlspace qualifies at all:

• Existing insulation must be R-11 or less. If your crawlspace was already upgraded to modern levels, you are not eligible. Most Portland homes built before the 1990s carry original R-11 or R-19 batt, and anything wet, fallen, or rodent-damaged is functionally worse than its label.
• New insulation must reach R-30 or greater, or fill the cavity, for a single-family or attached residence. Manufactured homes need R-22 or greater. For rim joists, the target is R-15 or greater, and existing rim joist insulation must be R-4 or less to qualify. The wall and rim joist measure is for single-family and attached homes only; the sheet excludes manufactured homes from it in both states.

Do not assume a code-compliant install is automatically a rebate-eligible one. Oregon's Chapter 11 carries two component tables. New construction is held to R-30 for underfloors. A retrofit on an existing home falls under Table N1101.2, which requires R-30 only where nominal joist depth exceeds 10 inches — and R-25 where it is 10 inches or less, which covers typical 2x8 and 2x10 joists in much of the Portland housing stock. So a contractor can install R-25, comply with the table that governs your job, and leave you below the R-30 the incentive requires. If you intend to claim the rebate, specify R-30 or greater in writing before the work starts. Why your floors are cold over a crawl space sets both tables out side by side.

One important sequencing detail: existing R-value has to be documented to prove eligibility. Once the old batt is in a dumpster, the evidence is gone. This is why the paperwork conversation belongs in the inspection, not after the install.

What a rebate is actually worth

Run the numbers on a typical Portland crawlspace rather than a percentage. For an owner-occupied single-family home in Oregon at $0.75 per square foot:

• A 1,200 sq ft crawlspace returns about $900.
• A 1,500 sq ft crawlspace returns about $1,125.

The comparison almost nobody publishes is the one that matters at the point of decision: what the job costs after the money comes back. Floor insulation replacement — batt removal, new R-30 batt and rim joist sealing — is modelled at $2,375 to $5,525 for the reference crawlspace of 1,200 to 1,500 square feet. Across that project, installed cost works out at roughly $1.58 to $4.60 per square foot, which is the figure the per-square-foot incentive should be read against.

Net cost after the incentive

Four things this table is not. The incentive is paid on floor area, while the project range also covers removal, disposal and rim joist sealing, so the subtraction is exact only for the insulation measure itself — rim joist work earns separately, per square foot of rim area rather than floor area: $1.50 per square foot in Oregon, $1.25 per square foot on the Washington side, for an owner-occupied single-family home. The cost side is a modelled estimate rather than a collected quote, and the methodology page says so in those words. And the money arrives after the work is paid for, not off the invoice: you finance the gross figure and receive the incentive on a claim, so the net column is what the job costs you, not what you need available on the day. And the cost side does not scale with floor area: $2,375 to $5,525 is one modelled band for the whole reference project, spanning access, condition and scope rather than square footage. Only the incentive column varies by area, which is why the larger rows show a lower number at the bottom of the band. Read each row as this project, less what an area of this size earns back — not as a prediction that a bigger crawlspace is a cheaper job.

Read the Washington rows against the Oregon ones. The same crawlspace, the same batt, an owner-occupied home on either side of the Columbia — and the incentive covers a materially larger share of the job on the north bank, because the rate is $1.25 rather than $0.75.

That is a meaningful discount on a job you were doing anyway. It is not, on its own, a reason to insulate a crawlspace that does not need it, and it does not change the economics of a full encapsulation very much, because the barrier, the dehumidifier and the vent sealing are not rebated measures. See the 2026 cost guide for what each service costs before incentives, and what a floor insulation replacement scope involves for the work these figures price.

Four ways homeowners lose the rebate

Every one of these is avoidable, and all four are common:

1. Missing the 60-day window. The application and supporting documents must be submitted within 60 days of initial installation. Work finished in November and remembered in February is past the deadline.
2. Invoices not marked "paid in full." Unless the project runs through Savings Within Reach or an instant incentive, itemized contractor invoices must carry that marking and be submitted with the application. A quote or an unpaid invoice does not count.
3. No documentation of the pre-existing R-value. Eligibility depends on the old insulation being R-11 or less. If nobody photographed it before demolition, proving it afterward is difficult.
4. Assuming the contractor is handling it. Sometimes they are, particularly enrolled trade allies who file instant incentives directly. Sometimes the homeowner is expected to file. Nobody discovers the misunderstanding until the window has closed. Ask, in writing, who submits the paperwork.

How to claim it

The sequence that works:

1. Confirm your utility is one of the participating five (or NW Natural in Washington) before anything else.
2. Raise the rebate during the inspection, not after. Ask the contractor to document existing insulation R-value with photos while it is still in place.
3. Ask whether they are an enrolled trade ally, and whether you qualify for Savings Within Reach. If you are a landlord or income-qualified, this decides real money.
4. Get the scope in writing with the target R-value stated. R-30 or greater for a single-family floor; R-15 or greater for rim joists.
5. Agree in writing who files the application, and calendar the 60-day deadline from the install date.
6. Keep the itemized invoice marked paid in full.

If your crawlspace insulation is wet, sagging, or missing, you are likely both below the R-11 eligibility ceiling and overdue for the work. A free in-home inspection from a licensed local contractor will confirm the existing R-value, the square footage, and whether your utility participates, before you commit to anything.