The Quick Read: You can finance a newly built second home with a jumbo mortgage when the loan amount is above your county’s conforming limit and the home fits second-home rules. The path matters more than the loan label. A finished builder home is a standard purchase loan. A home built to order from the ground up may need a separate construction structure. Your credit, reserves, and the appraisal against the contract price decide how it goes, subject to lender guidelines and full file review.
Key Takeaways
- A jumbo loan starts one dollar above your county’s conforming limit. It can fund a second home.
- Across the wholesale lanes Lendmire places files with, the headline lane starts at a 660 decision score and reaches 90% leverage. The largest lanes go to $5,000,000.
- Builder incentives can lower the value the lender uses, so they are not free money.
- Both housing payments count against your ratios, and reserves rise with the loan amount.
- Know which new-build path you are on before you sign a contract. The exact numbers vary by lender and program and follow a full review of property, leverage, and credit.
Can a Jumbo Loan Really Fund a New Build?
Yes, with conditions. Jumbo lenders write purchase loans for second homes every week, and a brand-new house is just a house that has never had an owner. The lender cares about three things: who will use it, what it is worth, and whether your file can carry two homes.
Jumbo payment estimate
The starting figures are an example price in the jumbo range with ten percent down on a thirty-year fixed. Replace them with yours.
Editable benchmark: 7.40% as of October 15, 2026 · Freddie Mac 30-year average via FRED®. A conventional market reference, not a jumbo loan quote.
Illustrative starting assumptions: a $1,000,000 price in the jumbo range, ten percent down on the top-leverage lane, a thirty-year fixed structure at the current Freddie Mac conforming benchmark, and property taxes and insurance estimated at typical national rates. Every field is editable.
Illustrative estimate only — not a Loan Estimate, approval, quote, or commitment to lend. The rate field carries the weekly Freddie Mac thirty-year conforming benchmark, a market reference and not a jumbo loan quote; jumbo rates are set by the lender and the lane at lock and differ from the conforming benchmark. An adjustable-rate scenario is shown at the benchmark for the whole term; the rate after the initial period is unknown. Reserve months and appraisal counts follow the lane sheet for the amount band; the automated finding may require more. Taxes, insurance and dues are editable estimates; closing costs are not included. On most lanes the conforming limit for the county decides whether a loan is jumbo at all; two lanes start at a stated dollar floor instead. Licensed in sixteen states for consumer mortgages.
Lendmire is a mortgage broker. It arranges these loans through wholesale lenders and does not lend itself. If you want a look at the product family first, start with Lendmire’s jumbo loan programs. They come in fixed, adjustable, and interest-only structures. Each lane sets its own limits on leverage, ratios, and reserves.
Here is the catch with new builds. The loan can be easy while the timing is hard. A builder’s schedule moves, and a lender’s appraisal and approval windows do not move with it. Most of the real work is lining those two clocks up.
Which New-Build Path Are You On?
There are three common paths, and each one changes how the lender sees the file. Pick yours first. Everything else follows from it.
| Path | Loan structure | When you apply | Main risk |
|---|---|---|---|
| Finished or nearly finished builder home | Standard purchase loan | Before the contract deadline | Appraisal below price |
| To-be-built home in a builder community | Purchase loan, timed to completion | At contract, then lock to the schedule | Completion date slips |
| Custom build on your own lot | Construction-to-permanent or separate loans | Before breaking ground | Draws, overruns, conversion |
A builder community is where most vacation buyers land. You pick a lot and a plan, and the builder finishes the house. Your lender usually funds a purchase loan at completion. That is a normal jumbo purchase with extra homework on the schedule.
The custom build is a different animal. Construction-to-permanent loans fund in stages and then convert to a long-term mortgage. Whether a given jumbo lane offers that structure varies by lender, so confirm it before you sign a build contract. Some construction loans convert on their own, and some make you reapply. Read the loan terms to see which one yours is.
How Does a Lender See a Vacation Home?
A lender treats a vacation home as a second home. That label drives the leverage, the reserves, and the pricing, so it is worth getting right.
The reference definition comes from Fannie Mae’s occupancy rules. A second home is a one-unit dwelling you occupy for part of the year. It is suitable for year-round use and under your exclusive control. It is not a timeshare or a rental property. Jumbo lenders set their own rules, but many mirror these basics and then add overlays.
Three practical points follow:
- Use has to make sense. A lender looks at where the home is, how far it sits from your main residence, and how you plan to use it. A beach house in a seasonal area reads naturally. A second home ten minutes from your front door raises questions.
- No mileage rule exists in the Fannie Mae text. The “100 miles away” idea is a rule of thumb some underwriters use. It is not in the published occupancy language.
- Expected rent will not help you qualify. Fannie Mae’s guide says a second home cannot be qualified on rental income, and a management firm that controls occupancy conflicts with second-home status. Occupancy sets the leverage, and a second home usually gets a lower ceiling than a primary home.
Some resort developments require you to join a rental pool. That can knock the home out of second-home treatment. Read the community documents before you fall in love with a floor plan.
Where Does the Jumbo Line Sit?
A loan is jumbo when it exceeds the conforming limit for the property’s county. The county of the home you are buying sets that limit, not the county where you live now.
The Federal Housing Finance Agency sets a national baseline each year. High-cost counties can run up to 50 percent above it, per the FHFA conforming loan limit addendum. That is why there is no single national jumbo number. Look up the limit for the county where the house sits, since it changes yearly. A modest vacation town may have a low limit, while a coastal resort county may have a high one.
Jumbo is not a government program. It is simply a loan above the line. A jumbo loan may cost more than a conforming one, and a second home usually adds to that.
What Does the Jumbo Envelope Look Like?
The wholesale jumbo lanes have a shared shape, and the numbers below are the ones that matter most for a vacation purchase. Every figure is subject to lender guidelines and full file review. None of it is a commitment to lend.
| Feature | What the lanes allow |
|---|---|
| Headline lane credit | 660 decision score |
| Leverage | Up to 90%; several lanes reach 89.99% CLTV, the rest stop at 80% |
| Loan size | Up to $5,000,000 on the largest lanes |
| Ratio ceiling | 50% fixed; 45% adjustable. Pricing and available terms vary by lender, borrower profile, property type, and full underwriting review. |
| Structures | Fixed, adjustable, interest-only |
A few more facts, stated in words because they vary by lane. Reserves are counted in months of the full housing payment, and they rise with the loan amount. Above a lane’s threshold amount, the lender orders two appraisals. Two lanes accept non-warrantable condominiums. Second-home leverage is set lane by lane, and cash-out sits at lower leverage than a purchase, with a cash cap on the largest lanes.
Read the leverage row carefully. A 90% ceiling does not mean your second home gets 90%. The headline reach applies to the best-fitting file, and occupancy and loan size pull it down. Ask which lane your specific purchase lands in.
How Is the Loan Underwritten, Step by Step?
Here is the process from contract to keys.
1. Choose the structure. Decide between a purchase of a finished home, a to-be-built home in a community, or a custom build. See the table above.
2. Review the builder contract. Check the completion date, deposit terms, and any incentive. Ask whether the builder pushes a preferred lender and whether using one is required. It usually is not.
3. Apply and receive the Loan Estimate. After you apply, the lender must deliver a Loan Estimate, per the CFPB’s guide to the Loan Estimate and Closing Disclosure. Collect estimates from more than one lender and compare them line by line.
4. Declare occupancy. You certify that it is a second home. The lender checks that the story holds together.
5. Qualify the whole file. The vacation home’s full payment counts as a recurring debt, along with your current housing. Your ratios are tested against the ceilings in the table above.
6. Appraisal. The appraiser sees your sales contract, including any incentives. For an unfinished house the appraisal is made “subject to” completion, and the lender confirms completion before funding.
7. Review the Closing Disclosure. It must reach you ahead of the scheduled closing, per the CFPB’s Closing Disclosure explainer, and the exact timing varies by file and lender. Compare it to your Loan Estimate and ask about every change.
8. Final walkthrough, completion, funding. The certificate of occupancy and final inspection come first. Funding follows.
Construction-to-permanent loans may show construction and permanent phases as one disclosure set or two. Ask which approach your lender uses.
How Do Builder Incentives Affect the Appraisal?
They can shrink the number the lender lends against. Builders love to advertise credits, upgrades, and closing help. The appraiser sees all of that in the contract.
Under Fannie Mae’s guidance on concessions, sales concessions come off the sales price. Leverage is then measured against the lower of the reduced price or the appraised value. Jumbo investors set their own concession limits, but the logic is common. A big incentive is not free money. It can shrink the value the loan is built on.
Picture a buyer with a 20% down payment on a community new-build. The builder offers a credit to cover closing costs. The lender subtracts the credit from the price when it figures leverage. The buyer’s real leverage is now higher than 80%, and the file may land in a different lane. The reverse also happens. A modest incentive often stays within limits and causes no trouble.
Appraisals get harder in resort markets because new homes have few matching sales nearby. If the appraisal comes in under the contract price, someone covers the gap. It is usually you, unless the contract lets you renegotiate or walk. Ask the builder before signing how an appraisal shortfall is handled.
What Can Go Wrong Between Contract and Keys?
Most new-build problems are timing problems. Here are the ones that matter most, with a plan for each.
| Risk | What happens | What to do |
|---|---|---|
| Completion slips | Lock or appraisal window runs out | Match lock length to the build schedule |
| Low appraisal | Value below contract price | Know the contract’s shortfall terms |
| Finances change | Credit or income moves mid-build | Hold steady: no new debt, no large moves |
| Cost overruns | Draws exceed the plan (custom builds) | Keep a cash cushion beyond reserves |
| Rental-pool rule | Second-home status in doubt | Read community documents before signing |
Lenders set their own rules for how long an appraisal stays valid and how long a locked loan can wait. Some lenders re-check a file at completion, and a changed picture can force a requalification. Lendmire’s advice here is simple: open a conversation with a broker before you choose a lot, not after the deposit is down. That way the schedule you sign matches a loan that can actually follow it.
Also pay attention to money you move. A big transfer for the deposit needs a paper trail. Lenders want to see where your down payment came from, and on second homes it generally has to be your own funds.
How Much Cash Does a Second Jumbo Take?
More than most buyers expect, and the surprise usually comes from reserves. Reserves are money left in the bank after closing, counted in months of the full housing payment. Across the lanes Lendmire works with, reserves rise as the loan amount rises. A larger loan can require a larger cushion.
Because you will own two homes, the lender looks at reserves for the new property and often at your other financed properties too. A buyer who is comfortable on income can still come up short on cash. Count the whole picture: down payment, closing costs, reserves, furnishing, and a buffer.
Your ratios also carry both homes. The fixed lanes allow up to a 50% ceiling, with lower ceilings on the adjustable and interest-only lanes. Pay down other debts before you apply if the ratio is tight. Interest-only structures hold the early payment down, but they carry the tightest ratio ceiling of the three.
If you plan to tap your main home’s equity for the down payment, that is its own file with its own limits. Lendmire covers it in a piece Can a W-2 Earner Use a Jumbo Cash-Out to Buy a Vacation Home?. If you already own a vacation home and want to fund the next one from it, there is a related piece How to Pull Jumbo Cash-Out From a Vacation Home to Buy Another.
What Does a New Second Home Cost to Carry?
Budget for more than the mortgage. The payment counts in your ratios, but several other costs do not show up there.
- Insurance. Coverage during construction can differ from coverage on a finished home. Ask your insurance agent early, since coastal and mountain areas can be harder to insure.
- Community fees. Resort and builder communities often charge dues. Lenders include those in your qualifying payment.
- Property taxes on a new value. A newly built home may be assessed higher than the lot was. Ask the county how it assesses new construction.
- Furnishing and upkeep. These are real, and nobody finances them for you.
- Well, septic, or utilities on rural lots.
Tax treatment can depend on your situation; borrowers should speak with a qualified tax professional before relying on any deduction or credit.
Where the General Rule Breaks
Several edge cases change the answer.
Condos in resort towns. A condo is not treated like a house in every lane. The project itself has to be eligible. Two of the lanes accept non-warrantable condominiums, which are condo projects that fall outside standard agency project rules, but leverage and reserves are set lane by lane. Ask about project approval before you pay a deposit.
Rental pools and management agreements. If the community requires you to hand the home to a rental manager for part of the year, second-home status can be lost. A lender may then treat the loan under a different occupancy type, with different leverage. Occupancy decides the leverage. A second home, a primary home, and an investment property are each priced and capped differently.
Government loans. FHA, VA, and USDA loans are built for primary residences. A vacation home is a different category, so a jumbo or conforming loan is the usual route.
Several financed properties. If you already own multiple financed homes, expect added reserve requirements. Mention them up front. Final terms depend on the lender’s guidelines, the property type, and the borrower’s complete credit picture.
Single-close builds. Some programs allow exceptions on aged credit or appraisal documents for a single-closing construction loan. These vary by lender, so ask rather than assume.
Is This the Right Move for You?
This works best for a buyer with strong credit, plenty of cash after the down payment, and steady income that carries both housing payments. It also fits a buyer who picks a builder with a realistic schedule.
It works less well when the plan depends on rent to cover the mortgage. Rent will not count toward qualifying, and a rental program can undercut second-home status. If the home has to earn income to make sense, say so to your broker early. It changes which products apply.
It is also a poor fit for a buyer who is close to the edge on ratios or reserves. The lanes allow up to a 50% ratio, but a file at the ceiling has no room for a surprise.
This one is a judgment call. A finished builder home gives you certainty on price and completion, while a to-be-built plan gives you more choice and more risk. Many buyers pick the finished home for the first vacation purchase and save the custom build for later.
Key Terms Defined
Jumbo loan: A mortgage larger than the conforming limit set for the property’s county.
Second home: A one-unit home you live in part of the year, not a rental or timeshare.
Reserves: Cash left after closing, counted in months of the full housing payment.
Appraisal “subject to completion”: A value opinion on an unfinished house, valid once the work is done and verified.
Sales concession: A builder or seller credit that lowers the price the lender recognizes.
Construction-to-permanent loan: One loan that funds a build in stages and then converts to a long-term mortgage.
CLTV: Combined loan-to-value, the total of all loans against the home divided by its value.
Frequently Asked Questions
Can I use a jumbo loan on a home that is not finished yet?
Sometimes. A to-be-built home in a builder community usually closes as a standard purchase when the house is complete. The appraisal is made “subject to” completion, and the lender confirms the work is done before funding. A true custom build needs a construction structure, and not every jumbo lane offers one, so confirm first.
Does my vacation home have to be a certain distance from my main home?
No published mileage rule exists in Fannie Mae’s occupancy language. The “100-mile” idea is a rule of thumb some underwriters apply. What matters is that the story makes sense: a seasonal location, part-year use, and a home suited to year-round living.
Can I count expected rental income to qualify?
Generally no. A second home cannot be qualified on expected rent. A rental arrangement that hands occupancy to a manager can also affect second-home status. If renting the home is central to your plan, tell your broker at the start.
How much can I borrow against a new second home?
The wholesale jumbo lanes reach 90% leverage on the headline lane, with several others at 89.99% CLTV and the rest at 80%. Second-home leverage is set lane by lane, so your actual ceiling can be lower. Loans run up to $5,000,000 on the largest lanes, subject to lender guidelines and full file review.
What happens if the builder finishes late?
It depends on the lender’s lock and appraisal windows. A delay can force an extension or a new appraisal, and a changed financial picture can mean requalifying. Match your timeline to the build schedule before you sign.
Next Step
If you are buying a home and want to see whether a jumbo loan fits your file, Lendmire can help you compare the options and what each one asks of the file. Bring the builder contract, the community documents, and a clear picture of how you will use the home. Those three items answer most of a lender’s early questions.
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
1. Fannie Mae Selling Guide: occupancy types
2. FHFA conforming loan limit addendum
3. CFPB guide to the Loan Estimate and Closing Disclosure forms
4. CFPB Closing Disclosure explainer
5. Fannie Mae Selling Guide: interested party contributions
This article is part of Lendmire’s jumbo loan program — full qualification details, guidelines, and scenarios live on the program page.
Related reading: How Many Months of Reserves Does a Jumbo Loan Require? · Can You Get a Jumbo Cash-Out on a Rural Home With Acreage? · Jumbo Cash-Out Seasoning Rules for a Second Home
Brandon Miller
Founder & CEO, Mortgage Loan Originator, Lendmire LLC
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Required disclosures. Lendmire (NMLS# 2371349) operates as a licensed mortgage broker, not a direct lender or depository. The discussion in this article is general in nature and should not be relied upon as financial, legal, or tax advice — every investment scenario is unique and should be reviewed by a qualified professional. Any loan inquiry is subject to lender underwriting, and this article is not a commitment to lend or a guarantee of approval. Mortgage rates, loan terms, and program guidelines vary by borrower, property, and state, and may change without notice. Equal Housing Opportunity. Verify licensure at NMLS Consumer Access.