The Quick Read: A standard cash-out refinance does not release money based on what the ADU or addition will cost. It releases what is left of your home’s current appraised value after the leverage cap, the payoff of your existing loan and any financed costs. A finished ADU or addition can raise that appraised value. One that is not built yet generally counts only through a renovation loan that appraises “as completed.”.
What Does “Released” Actually Mean?
The cash released is the new loan minus everything the new loan has to pay off. That is the whole formula. The new first mortgage replaces your old one, so the old balance comes out first, then any other lien, then financed closing costs. What remains is cash to you.
Across the wholesale programs placed through Lendmire, a conventional cash-out refinance on a one-unit principal residence is capped at 80% of value. Two- to four-unit principal residences, second homes and investment property are capped at 75%. Those caps apply to the value the appraiser reports, not to your construction budget.
So the budget never enters the equation. A homeowner who needs a large amount for a build can have a big plan and a small release, because the cap and the payoff decide the number.
How Is the Cash-Out Amount Underwritten, Step by Step?
Here is the order a file follows, from my own desk.
1. Pick the product. This decides whether future work counts at all. A standard cash-out uses today’s value. A renovation loan uses the as-completed value. A limited cash-out, FHA Streamline or VA IRRRL releases almost nothing.
2. Check seasoning and title. The first mortgage being paid off must be at least 12 months old, note date to note date, and a borrower must have been on title for 6 months. Delayed financing, inheritance and legal-award exceptions exist. Freddie Mac’s guide sets the same occupancy, six-month title and 12-month first-lien seasoning tests, and Fannie Mae’s cash-out section covers the delayed-financing exception for recent purchases.
3. Order the appraisal. The appraiser describes any ADU and decides how the property is classified. A standalone structure that misses the ADU minimums is treated as an ordinary outbuilding.
4. Run the cap. Value times the maximum LTV gives the maximum total loan. Subtract the payoff, financed costs and any other liens. What is left is the ceiling on cash.
5. Underwrite the borrower. Credit, income, debt-to-income and reserves apply. Most wholesale conventional programs start at a 620 decision score, with an automated finding governing most files and a total ratio ceiling of 50%. Fannie Mae’s guide asks for reserves on cash-out files where the automated debt-to-income ratio runs above 45%.
6. Close and disburse. On a standard cash-out, the money comes out at closing in one sum. On a renovation loan it sits in escrow and comes out in draws.
Everything here is subject to lender guidelines and full file review. Nothing is a commitment to lend.
Does the ADU Count Toward the Value?
If it exists and is finished, yes. An ADU is a separate living area with sleeping, cooking and bathroom facilities on the same parcel as the main home. It can be added to the house, built inside it or detached. Fannie Mae treats it like any other home feature, and the appraiser reflects what comparable sales say it contributes.
That last part matters. No agency page says an ADU adds a fixed amount. It depends on local comparable sales. An addition does not automatically raise value by what it cost to build, either. A $0 bump and a large bump are both possible.
Permit status is the first thing that can sink the credit. Freddie Mac requires ADU zoning to be legal, legal non-conforming, or in an area with no zoning, with a narrow exception. Freddie Mac’s ADU fact sheet spells this out. An unpermitted conversion can be reported at little or no value.
As-Is Value vs. Completed Value
This is the gap most explainers skip. A standard cash-out is sized on as-is value. An unbuilt ADU adds nothing to it. A renovation loan is sized on the value the home should have when the work is finished.
| Factor | Standard cash-out | Renovation loan |
|---|---|---|
| Value basis | Today’s appraisal | As-completed appraisal |
| Counts unbuilt ADU? | No | Yes, through the plans |
| How funds arrive | One sum at closing | Escrow, released in draws |
| Existing first mortgage | Replaced | Replaced |
| Paperwork | Standard | Plans, contractor review, contract |
Fannie Mae’s HomeStyle Renovation rules cap renovation cost on a refinance at 75% of the as-completed value, and Fannie Mae’s FAQ applies that same 75% limit to an ADU build. The loan-to-value test on a refinance uses the as-completed appraisal. Renovation soft costs such as permits, inspection and architect fees can generally be financed.
Fannie Mae has also announced that lenders may release part of the renovation money at closing for certain eligible uses. Whether a given lender does so is an overlay question.
Where Does the General Rule Break?
Several cases bend the standard answer.
- An unbuilt ADU. A standard cash-out does not count it. Use a renovation product or a construction loan.
- A limited cash-out refinance. Not a construction tool. Fannie Mae caps the cash back at the greater of 1% of the new balance or $2,000, and only a purchase-money second lien can be paid off.
- FHA Streamline. HUD limits cash in hand to $500 and does not allow closing costs to be rolled into the new loan.
- VA IRRRL. Proceeds pay the old VA loan and closing costs. The borrower generally cannot take cash. There is a narrow exception for recent energy improvements.
- VA cash-out. The Type II cash-out is the VA equity path. VA’s own circular allows up to 100% LTV, though many lenders set lower overlays.
- Short-term construction debt. Freddie Mac’s CHOICERenovation offers a no-cash-out refinance to pay off short-term financing used for ADU work completed by the note date.
- Energy-only debt. Paying off a PACE loan does not trigger cash-out treatment.
- A recent cash purchase. Delayed financing lets you refinance inside six months, capped at your documented investment plus financed costs.
- Two- to four-unit homes. The cap drops to 75%, so an addition that turns a one-unit home into a multi-unit one lowers the leverage.
- Texas. The state constitution caps a cash-out on the homestead, and the wholesale no-mortgage-insurance lane is not written there.
Unit counts for ADUs are not consistent across agency documents. Older Fannie Mae text allows one ADU, while newer appraisal reporting policy allows up to three on a one-unit principal residence. Ask the lender which version applies.
Can ADU Rent Help Me Qualify?
Sometimes, in narrow cases. Fannie Mae allows ADU rental income for a one-unit principal residence on purchase and limited cash-out files, and income counts from only one ADU even if several exist. Freddie Mac has a cap on ADU income as a share of stable monthly qualifying income. Don’t plan around it for a standard cash-out. It is a file-by-file question.
Is There a Wholesale Lane With No Mortgage Insurance?
Yes, in limited form. One wholesale lane reaches 89.99% LTV with no mortgage insurance on a thirty-year fixed, principal residence, conforming balance, at a 680 score and a 50% ratio. It carries its own six months of seasoning. It is the exception to the 80% cap, not the rule, and it is not written in Texas. Final terms depend on the lender’s guidelines, the property type, and the borrower’s complete credit picture.
Reverse-Sizing: Start With Your Budget
Most people work forward from equity. Work backward instead.
1. Write down the full project budget, plus a contingency. Overruns are common on additions.
2. Ask the lender for the as-is value the appraisal supports, or the as-completed value if the product allows it.
3. Apply the cap for your occupancy and unit count.
4. Subtract your payoff and any other lien.
5. Subtract financed closing costs.
6. Compare what is left with the budget.
If the answer falls short, the options are a smaller scope, a renovation product sized on completed value, paying part from savings, or a home equity line behind your current first mortgage. A cash-out replaces your whole first loan, and with it your existing rate and term. That is the real cost to weigh. A line of credit leaves the first loan alone. The CFPB’s HELOC booklet explains how that borrow-and-repay structure works.
Cash on one date creates its own problem. Lump-sum proceeds arrive before the contractor’s final price is known. You manage the draws yourself, against milestones. Renovation escrow shifts that job to the lender, and adds inspections and paperwork in exchange.
The risk is real. The CFPB warns that turning other debts into mortgage debt can raise foreclosure risk, because the loan is secured by your home. Tax treatment can depend on your situation; borrowers should speak with a qualified tax professional before relying on any deduction or credit.
Key Terms Defined
As-is value: What the appraiser says the home is worth today, before any planned work.
As-completed value: The appraiser’s estimate of worth after planned work is finished, used by renovation loans.
LTV (loan-to-value): The new loan divided by the appraised value.
Seasoning: The minimum time you must have held the home or the loan being paid off.
Delayed financing: An exception that lets a recent cash buyer refinance inside the normal seasoning period.
ADU: A self-contained living unit on the same lot as a one-unit primary home.
What the Decision Looks Like in Practice
Take a homeowner with a one-unit principal residence and a garage they want to convert. They need the as-is value first. If equity under the 80% cap covers the budget with room for overruns and the current first loan is worth replacing, a standard cash-out works. If the numbers only work on the finished value, a renovation product fits better. If they like their current first loan, a line of credit behind it is worth pricing.
Lendmire’s cash-out refinance programs cover the standard conventional lane.
Frequently Asked Questions
Will a cash-out refinance release more money if I add an ADU?
Only if the ADU is finished and the appraiser credits it with value. A finished, permitted ADU can lift the appraisal, and the cap then applies to the higher number. An ADU you plan to build adds nothing to a standard cash-out.
Can I use a limited cash-out refinance to fund construction?
No. It pays off the existing first mortgage and any purchase-money second lien, with only incidental cash back. Fannie Mae’s cap is the greater of 1% of the new balance or $2,000.
Does an addition always raise the appraisal by its cost?
No. The appraiser reflects what comparable sales support. Fannie Mae’s renovation program does not require the improvements to add value. A large addition in a neighborhood of modest homes can appraise for much less than it cost.
Can an FHA Streamline or VA IRRRL pay for an addition?
No. The Streamline limits cash to $500, and the IRRRL generally pays only the old loan and closing costs. For equity, borrowers look at FHA or VA cash-out options, or a renovation product.
Does the cap change if the property has two to four units?
Yes. A conventional cash-out on a one-unit principal residence is capped at 80%, while two- to four-unit principal residences are capped at 75%. Appraisal classification of the ADU decides which category applies.
For your own numbers, request a scenario review with Lendmire.
For current guidelines and terms, see Lendmire’s refinance programs page.
About Lendmire
Lendmire (NMLS# 2371349) is a mortgage broker licensed for consumer lending in 16 states. Lendmire arranges FHA, VA, conventional and jumbo purchase and refinance loans through wholesale lenders; every file is underwritten by the lender under the applicable program guidelines. Scotsman Guide named Lendmire a Top Mortgage Workplace in both 2025 and 2026.
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References
1. Freddie Mac Guide Section 4301.5
2. Fannie Mae Selling Guide B2-1.3-03, Cash-Out Refinance Transactions
4. Freddie Mac’s ADU fact sheet
5. Fannie Mae’s HomeStyle Renovation rules
6. Fannie Mae Selling Guide Announcement SEL-2025-08
7. HUD FHA Streamline Refinance
9. CFPB: CFPB Report Finds Cash Out Mortgage Refinance Borrowers Improve Credit Scores
This article is part of Lendmire’s Refinance series — every loan program’s qualification details, guidelines, and scenarios live on the loan options page.
Related reading: Cash Out Refinance Duplex · How Much a Cash-Out Refinance Releases for a Note-Only Partner · How Much a Cash-Out Refinance Raises the Payment and Your DTI
Brandon Miller
Founder & CEO, Mortgage Loan Originator, Lendmire LLC
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Disclosure information. Lendmire is a state-licensed mortgage brokerage under NMLS# 2371349. Lendmire is not a depository institution, direct lender, or financial advisor — all loans referenced are placed through wholesale lender partners and are subject to each lender's underwriting standards. This article is provided for general informational purposes and is not a commitment to lend, nor does it constitute financial, legal, or tax advice. Loan programs, terms, rates, and qualification standards change without notice and depend on borrower profile, property type, and the state in which the subject property is located. Equal Housing Opportunity provider. NMLS Consumer Access: nmlsconsumeraccess.org.