The Quick Read: The most you can borrow equals the lender’s leverage cap times the home’s appraised value, minus what you owe and the costs of the loan. What is left is your renovation money. Then the loan has to clear several other tests, and the tightest one sets the real limit. Ask early which value the lender counts: the home as it is today or the home after the work.
Key Takeaways
- The core formula: allowed leverage × appraised value − payoff − closing costs = cash for the project.
- Value is the biggest variable. A standard cash-out uses today’s value. Work you have not done yet usually earns no credit.
- Leverage is one test among several. Credit score, debt-to-income ratio, reserves, and any cash cap can each be the one that binds.
- Take what the project needs plus a cushion, not the maximum. Every extra dollar borrowed is a dollar you repay.
- Program terms vary by lender, property, and file review. Nothing here is a commitment to lend.
What Does “Sizing” Mean on a Jumbo Cash-Out?
Sizing means working out how much you can borrow and how much you should. A jumbo loan is any mortgage above the conforming limit for your county. A cash-out refinance replaces your current mortgage with a bigger one and hands you the difference.
Borrowing for renovation is common. CFPB research lists home repairs or new construction as the second most common reason people give for taking cash out.
Lendmire arranges these loans through wholesale lenders. Across the programs on its jumbo cash-out refinance program page, the headline lane starts from a 660 decision score. It reaches up to 90% leverage on some purchase files and goes up to $5,000,000 in loan size. Cash-out sits lower on that leverage ladder. Every figure is subject to lender guidelines and full file review.
Sizing is a sequence. You set the budget. Then you establish the value. Next, apply the leverage cap and run the other tests. Last, subtract everything that comes off the top.
Step 1: Turn the Project Into a Required Number
Start with the work, not the loan. Collect contractor bids and plans. Lenders on larger loans want the scope and budget documented, and you will want the same for your own protection.
Build the budget in three layers:
- Hard costs: labor and materials the contractor bills.
- Soft costs: design fees, permits, and inspections.
- Contingency: a cushion for surprises. Older homes and structural work tend to need a bigger one.
That total is the cash you need the loan to deliver. Closing costs and reserves are handled in later steps, so leave them out of this number.
Plenty of people skip the contingency line. Don’t. A project that ends up over budget on a maxed-out loan leaves you funding the gap from savings or a second loan.
Step 2: Which Value Does the Lender Use?
This is the single biggest sizing variable. A standard cash-out refinance lends against the home’s current “as-is” value. The work you plan to do counts for nothing yet. A renovation-style product lends against an “as-completed” value, an estimate of worth after the work.
Fannie Mae’s HomeStyle renovation product shows the second approach. The appraiser estimates the finished value, and that figure sets the maximum loan. Funds are held back and released in draws as work is completed.
HomeStyle is a conforming product, though. A jumbo loan generally can’t use it. Ask your jumbo lender two questions: which value drives the loan, and whether proceeds arrive as a lump sum or through a holdback.
Plan on as-is value unless the lender tells you otherwise. Then you will not be surprised.
Step 3: Apply the Leverage Cap
Leverage is the share of the home’s value that the new loan may reach. For jumbo, each wholesale lane sets its own cap. Here is how the verified parameters play out in practice:
- The headline lane starts at a 660 decision score and reaches up to 90% leverage. Several lanes reach 89.99% combined leverage, which counts any second loan alongside the first.
- The remaining lanes stop at 80%.
- Cash-out is capped lower than purchase on the same lane.
- The largest lanes also carry a cash cap, a limit on how much cash you can take regardless of equity.
- Loans reach $5,000,000 on the largest lanes. Each figure is subject to lender guidelines and a complete review of property type, leverage, and credit.
Occupancy matters too. Primary residence, second home, and investment property each get their own leverage on a lane. This article is about the home you live in, which is treated most favorably. Other occupancies are treated more conservatively.
Notice what is missing: a single “jumbo cash-out maximum.” It depends on the lane, your score, and your loan size. Anyone quoting one number for the whole market is guessing.
Step 4: Run the Other Tests (The Tightest One Wins)
Leverage gets all the attention, but it is one gate among several. Your real maximum is the lowest result across all of them. Here is the checklist.
| Test | What it limits | What to ask |
|---|---|---|
| Leverage cap | Loan as a share of value | Which lane, and what cash-out cap? |
| Debt-to-income | Total monthly debt vs. income | What ceiling applies on this lane? |
| Credit score | Which lanes you can enter | Does a higher tier raise the cap? |
| Reserves | Savings left after closing | How many months of full payment? |
| Cash cap | Dollars you can take out | Does this lane have one? |
On the fixed lanes the ratio ceiling is 50%. It drops to 45% on the adjustable lanes and 43% on the interest-only lanes. Reserves are counted in months of the full payment and rise with the loan amount. Above a lane’s threshold amount, two appraisals are required.
Here is why the lowest result wins. Your equity might support the full leverage cap. Your income might support a smaller loan under the ratio ceiling. Then the ratio sets the size, not the equity. A borrower with lots of equity and a heavy debt load often finds this out late.
Reserves can bind as well. After closing you must still hold a set number of months of payments in cash or liquid assets. Reserves are not part of your renovation money. Don’t spend them on the project.
Step 5: Subtract What Comes Off the Top
Gross proceeds are not your proceeds. Work down the waterfall:
1. Maximum new loan: the leverage cap times the appraised value.
2. Minus the payoff of your existing mortgage and any other liens.
3. Minus financed closing costs: appraisal (sometimes two), title, and lender fees shown on your Loan Estimate.
4. Equals cash to you. Your reserves stay separate and untouched.
Costs on large balances add up, so they matter more than on a typical loan. Costs are often rolled into the new balance. That is convenient, but it means you pay interest on them for the life of the loan.
Check the result against Step 1. If the cash is short of the required number, one of the inputs has to move.
Three Worked Scenarios (In Percentages, Not Dollars)
These are hypothetical, not program figures. They use percentages of the home’s current appraised value so the math stays visible.
Forward scenario. Say your current mortgage balance equals 55% of value. The project, with contingency, runs 15% of value. Closing costs are about 2% of value. You need the new loan to reach roughly 72% of value. Any lane whose cash-out cap sits below that cannot fund this project on as-is value. A lane with a cap above it can, if the other tests pass.
Reverse scenario. Start from the cash you want. Add your payoff and costs. That gives the loan you need. Divide by the lane’s leverage cap, and you get the value the home must appraise at. If your home is unlikely to appraise that high, shrink the project or phase it. Competitors’ calculators rarely run it backward. It is often the more useful direction.
Stress scenario. Now run the same file with the appraisal coming in a few percent low. Every leverage-based limit shrinks with it. The loan you need stays the same. Cash that looked comfortable can turn tight or negative. Run the numbers at a lower appraisal before you sign contractor agreements, not after.
Where the General Rule Breaks
Rules of thumb work until the file hits an edge. Here are the ones that matter for renovation borrowers.
Jumbo is county-specific. The federal limit is set by FHFA each year. It is higher in high-cost counties. A loan that is jumbo in one county can be conforming in the next. If your payoff plus new cash lands near the line, check your county, because the product and its cash-out terms change on either side of it.
Renovation loans are structured differently. A renovation product holds funds in escrow and releases them in draws, with an inspection at the end. A standard cash-out pays you directly. Neither is better by default. Draws protect you from paying for work not yet done. A lump sum gives you flexibility but also total responsibility for the budget.
Seasoning can block a recent buyer. Seasoning is the waiting period between buying and refinancing. Conforming guides set waiting periods for cash-out on a recently purchased home, with narrow exceptions such as paying all cash. Jumbo lanes set their own, so ask.
Energy-improvement liens can complicate things. Some conforming guides have blocked a cash-out when a special energy-improvement assessment sits on the property, unless it is paid off. If your renovation involves solar or similar financing, flag it up front.
Condos can change the lane. Non-warrantable condominiums, meaning buildings that fall outside standard project guidelines, are accepted only on two of the lanes. That narrows your options quickly if you live in one.
Over-improving hurts. An appraisal has to support the cost of the work. A top-of-market kitchen in a neighborhood of modest homes may not add what it costs. On an as-is cash-out this does not hurt your loan amount. It does hurt your return.
The Rules in Brief
One short stretch of rules is worth knowing, because it affects how you are underwritten.
Lenders must make a good-faith determination that you can repay. Under the CFPB’s General QM rule, that means considering and verifying your income or assets, your debts, and either your debt-to-income ratio or residual income. The old flat ceiling on debt-to-income was replaced with price-based thresholds. Jumbo loans can be qualified mortgages or non-qualified mortgages, depending on the lane. Lenders also set their own ratio limits, which is why the ceilings above matter more than the federal rule.
The CFPB also flags jumbo first-lien loans priced well above a benchmark average as “higher-priced.” Those carry added consumer protections. You will see this on your disclosures, not in a decision you make.
Should You Take the Maximum? (Right-Sizing)
Usually not. Take the amount the project needs plus the cushion. Here is why.
The payment goes up. A bigger loan means a bigger payment on the entire balance. Because you get no monthly savings in return, the usual break-even test for a refinance does not work here. The question is whether the project is worth the added carrying cost to you.
The whole balance reprices. In a cash-out, your old mortgage disappears and the new loan covers everything. A second lien such as a home equity line keeps your first mortgage in place and adds a separate payment. If your existing loan is a good one, a second lien may fit better. If you want one payment and a longer fixed structure, cash-out may fit better.
Your home is the collateral. CFPB research cautions that turning other debt into mortgage debt puts the home at risk if payments become unsustainable. Cash-out also draws down your equity.
Here is a quick way to choose:
| Option | Best fit | Watch for |
|---|---|---|
| Jumbo cash-out | One loan, large project | Whole balance reprices |
| Second lien or line | Keep a good first loan | Two payments |
| Renovation-style loan | Value after work counts | Often conforming-only |
| Paying from savings | Small project | Thin liquidity |
Tax treatment can depend on your situation; borrowers should speak with a qualified tax professional before relying on any deduction or credit.
Common Sizing Mistakes
- Counting value you haven’t built. Plan around the as-is appraisal unless the lender says otherwise.
- Forgetting reserves. They are required after closing and are not project money.
- Looking only at leverage. A ratio ceiling or cash cap may bind first.
- Skipping contingency. Overruns land on you.
- Ignoring the county line. A jumbo in one county is conforming next door.
- Taking the maximum “because it’s there.” You repay all of it.
Your Pre-Application Checklist
Gather these before you talk to a lender:
1. Contractor bids, plans, and a contingency figure.
2. Your current mortgage statement with the payoff balance.
3. Your best estimate of today’s value, from comparable sales.
4. A list of monthly debts and your income documents.
5. Statements showing the savings you will hold in reserve.
6. A note on whether you have recently purchased, or carry any special liens.
7. Your goal: a lump sum, or staged payments to the contractor.
With that list in hand, a broker can match your file to the lanes that fit and tell you which test binds. Lendmire is a mortgage broker licensed for consumer lending in 16 states, and it arranges jumbo loans through wholesale lenders. If you are weighing a cash-out refinance against keeping the loan you have, Lendmire can help you compare the programs and the equity each one reaches. For very large files, its pieces on a cash-out for a private bank client and on how to cash-out refinance a super jumbo home on bank statement cover the next tier up.
Key Terms Defined
Jumbo loan: a mortgage above the conforming limit for the county where the home sits.
Cash-out refinance: a new mortgage that replaces your old one and pays you the difference in cash.
As-is value: what the home is worth today, before any planned work.
As-completed value: an estimate of what the home will be worth after the work is finished.
Leverage (or LTV): the loan balance as a percentage of the home’s value.
Combined leverage (CLTV): all loans on the home added together, as a percentage of value.
Reserves: savings you must still hold after closing, measured in months of the full payment.
Seasoning: the waiting period a lender requires between two events, such as buying a home and refinancing it.
Debt-to-income ratio: your monthly debts as a percentage of your monthly income.
Frequently Asked Questions
Can I use a jumbo cash-out to pay for a renovation?
Yes, subject to lender guidelines. Renovation is a common reason for cash-out, and jumbo lanes generally do not require you to prove how you spend the money. They do want to see that the loan and the project make sense for the home and your finances.
Will the lender count the value of my planned renovation?
Usually not. A standard cash-out uses the as-is value. Renovation-style products can count the finished value, but the best-known one, Fannie Mae’s HomeStyle, is conforming-only. Ask which value your jumbo lane uses before you plan the budget.
What limits how much I can take out besides leverage?
Your debt-to-income ratio, credit score, reserves, and any cash cap on the lane. The tightest one sets your maximum. On the fixed lanes the ratio ceiling is 50%, and it is lower on the adjustable and interest-only lanes.
Is a second lien a better way to fund the work?
It depends on your existing loan. A second lien leaves your first mortgage untouched and reprices only the new money, but it adds a second payment. A cash-out gives you one payment and reprices the whole balance. Compare both on your actual numbers.
What happens if the appraisal comes in low?
Every leverage-based limit shrinks, while the loan you need stays the same. That can cut your cash or end the deal. Run a low-appraisal scenario in advance, and consider phasing the project if it leaves you short.
For your own numbers, request a scenario review with Lendmire.
About Lendmire
Lendmire — NMLS# 2371349 — is a mortgage broker that arranges FHA, VA, conventional and jumbo home purchase and refinance financing in 16 states through wholesale lenders. Every option is subject to the lender’s guidelines and full underwriting. Scotsman Guide named Lendmire a Top Mortgage Workplace in both 2025 and 2026.
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References
2. Fannie Mae – HomeStyle Renovation
3. FHFA – 2026 conforming loan limit news release
4. CFPB – General QM final rule
5. CFPB – What is a higher-priced mortgage loan?
6. CFPB – Cash-out refinances and paydown behavior of non-mortgage debt balances
This article is part of Lendmire’s Jumbo Loans series — every loan program’s qualification details, guidelines, and scenarios live on the loan options page.
Related reading: How Much Down Payment a Jumbo Cash-Out Refinance Funds on a Vacation Home · Jumbo Cash-Out Refinance Fixed Terms and ARM Options by Lane · Jumbo Cash-Out for High-Balance Homeowners: Terms That Decide It
Brandon Miller
Founder & CEO, Mortgage Loan Originator, Lendmire LLC
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Important disclosures. Lendmire (NMLS# 2371349) is a licensed mortgage brokerage. Lendmire is not a direct lender, depository institution, or financial advisor. All loan inquiries are subject to lender underwriting; this article does not constitute a commitment to lend. Rates, terms, and program guidelines are subject to change without notice and vary by borrower profile, property type, and state. Information in this article is general in nature and is not financial, legal, or tax advice. Equal Housing Opportunity. NMLS Consumer Access: nmlsconsumeraccess.org.