Retroactive C-PACE: which states allow look-back, and how far

You finished the building, or the retrofit, and paid for it with equity or a construction loan. Months later someone mentions that the HVAC, envelope and lighting in it might have qualified for C-PACE. Retroactive C-PACE — sometimes called look-back financing — is the answer to “is it too late?” In many places it is not, but the window is set programme by programme: Connecticut’s is under a year, Hawaii’s is five.

If C-PACE itself is new to you, start with our C-PACE overview.

What retroactive C-PACE is, and why it exists

Peachtree Group describes it plainly: “Retroactive C-PACE allows a borrower or senior lender to be reimbursed for C-PACE eligible line items,” and the money “can go towards interest operating reserves, pay downs, or return of equity.” It works “much the same as normal pre-project funding,” Peachtree says, except that “100% of the loan proceeds go directly to reimbursing the property owner for costs already spent.”

Programmes built it in because owners do not always know about C-PACE — or cannot close it — before they build. Delaware’s C-PACE Program Guide (version 4, 18 March 2024) says retroactive financing “has been established to provide capital to eligible existing building projects that previously installed eligible improvements, and to completed new construction projects that built to a higher standard of efficiency and sustainability.” Pennsylvania C-PACE’s FAQ answers the owner who “finished an energy efficiency retrofit last year and didn’t know about C-PACE at the time” with a yes.

The scope rules do not loosen because the work is finished. Delaware says retroactive projects are subject to “the same measure eligibility requirements” and programme fees as any other C-PACE project.

The look-back table

Every row below links to a dated programme document or statute. We checked each on 30 September 2026. Where a programme is run county by county, the row says whose rules they are.

State	Look-back window	Measured from / to	Source
Connecticut	Less than one calendar year	Completion to complete submission of documents for Green Bank approval	CT Green Bank Program Guidelines, 15 Mar 2024
Colorado	24 months (new construction and gut rehab)	Construction or installation to prequalification submission	CO C-PACE Program Guide v5.6, Jan 2023
Pennsylvania (Philadelphia)	730 days (new construction or substantial renovation)	Completion, shown by certificate of occupancy or similar, to complete Final Application	Philadelphia C-PACE Program Guidelines, Sep 2023
Wisconsin	30 months	Completion of installation to application	PACE Wisconsin Program Manual, 1 Feb 2022
Virginia	24 months in VPA’s 2022 guidelines; statute now reads three years	See note below	Va. Code § 15.2-958.3; VPA Guidelines, Sep 2022
Delaware	36 months	Construction or installation to project application	DE C-PACE Program Guide v4, 18 Mar 2024
New Jersey	Three years	Completion to project application	NJEDA board memo, 9 Oct 2024
Washington (King County)	Three years	Completion to project application, by final inspection, certificate of occupancy or similar	King County C-PACER Program Guidebook, Nov 2021
Hawaii	Five years (60 months)	Completion to project application	HI C-PACER Program Guide, rev. July 2026
Rhode Island	Projects installed since July 2015	Date of the state’s enabling legislation	RIIB C-PACE Program Guide, 26 May 2021

Notes on the rows that need them:

• Colorado. The guide limits retroactive financing to a recently completed new construction or gut rehabilitation project, capped at 15% of total eligible construction costs for a project that complies with IECC 2018, or 20% if it was designed and completed to beat IECC 2018 by five percent or more. The version we could retrieve is dated January 2023; ask the programme whether a later guide has changed it.
• Virginia. The Virginia PACE Authority’s September 2022 guidelines say that “per the C-PACE Act,” retroactive C-PACE “must occur within 24 months” of completion. The Code of Virginia as published today says a locality’s ordinance shall include provisions that the loan programme may approve an application “submitted within three years of the locality’s issuance of a certificate of occupancy.” The two do not match; confirm which your locality applies.
• Wisconsin. The manual adds “unless otherwise approved by the Program Administrator.”
• New Jersey. The date is the NJEDA board memo that set out the programme; it describes retroactive financing “so long as the project application is submitted no more than three years following the date of completion.”

Several markets are not in the table because we could not tie them to a dated programme document this time — among them California, Florida, Kentucky, Michigan, Minnesota, Missouri, Montana, New York, Ohio and Tennessee. Peachtree lists all of those except Montana and Tennessee as allowing retroactive C-PACE. We will add a state when we can link a dated source for its window. Our state-by-state C-PACE tracker shows which states have a programme at all.

Where the answer is no

We did not find a programme document that bans retroactive financing outright. In practice, the “no” comes from four places:

1. No programme where the building is. No state or local C-PACE programme means nothing to look back into.
2. Outside the window. A Connecticut project finished fourteen months ago has missed that programme’s calendar year.
3. The wrong kind of project. Colorado’s guide limits retroactive financing to new construction and gut rehabilitation.
4. The county joined too late. New Jersey’s Supplemental Guidelines require the project to be in a participating municipality at the time of application and approval; Colorado requires the district to be authorised in the county at the time of the retroactive financing.

What the programme wants for completed work

The burden shifts to proving what was built and when. Virginia’s guidelines ask for the completion date; the baseline code used for design and permit approval; the make and model of equipment replaced, if applicable; photos with descriptions that show the installation; and certifications from the registered contractor and the qualified professional. PACE Wisconsin asks for the completion date, the make and model of the equipment replaced and of the new measures, Wisconsin Energy Conservation Code compliance documentation, and photos with descriptions.

How completion is dated matters because the clock runs from it. Wisconsin uses the certificate of occupancy for new construction and, for existing buildings, invoices or the date a building inspector approved the installation; Virginia’s guidelines say the same for existing buildings. Philadelphia’s guidelines date completion by the certificate of occupancy “or other acceptable construction completion documentation.”

Two other things do not go away. Colorado says retroactive projects still need a Project Eligibility Report, “mortgage holder consent, where applicable,” and programme fees — its administration fee is 2.25% of the project amount, with a $5,000 minimum and a $50,000 maximum. New Jersey’s Garden State C-PACE Supplemental Guidelines apply the state’s prevailing wage requirements to the work in a retroactive project. If you have a senior lender, our borrower’s guide to lender consent applies here too.

The liquidity case

The point of retroactive C-PACE is to turn eligible work you already paid for back into cash. In Peachtree’s words, the money can go to “interest operating reserves, pay downs, or return of equity.”

Two published examples:

• Howell, Michigan. PACE Loan Group announced on 17 September 2024 a $2.6 million C-PACE loan for Howell Health Hub, an 86,300-square-foot medical office conversion of a 1956-built office property. The renovation was completed in July 2024, and the proceeds retroactively cover roof and wall insulation, ENERGY STAR windows, HVAC, plumbing and LED lighting.
• Nashville, Tennessee. Amalgamated Bank announced on 5 August 2025 a nearly $1.7 million retroactive C-PACE financing under the Davidson County C-PACER Program that “recapitalized the recently completed project,” a gut rehab of an 80-plus-year-old retail structure.

The cost is term. Many of the programmes we read shorten the repayment period by the life already used. PACE Wisconsin’s example: financing funded one year after installation has its eligible term “reduced by one year.” Peachtree gives a similar example, counted from when you apply: improvements with a 30-year useful life, if you apply for financing one year later, would “likely be 29 years or less.” Delaware caps new-construction terms at 25 years “less the number of years since project construction completion.” The longer you wait, the shorter the term.

When it is the wrong answer

If the eligible share of what you built is small, the fixed costs of a C-PACE closing may not be worth it. If your senior lender will not consent, the look-back window does not matter. And if you need the cash to rescue a project that cannot carry more debt service, a longer-dated assessment is still debt. We set this out in when C-PACE is the wrong answer.

If you have a recently completed project and want to know whether it is inside your programme’s window, send us the completion date, the county and the scope. We can match you to capital providers who do retroactive deals — or tell you plainly it has expired. That conversation costs nothing.

C-PACE Desk is an advisory and placement service. We are not a bank, a fund, or a programme administrator, and nothing here is legal, tax or accounting advice.