The Quick Read: No single HELOC program is best for every build, because a home equity line is secured by a property that already exists, so the best program for your situation depends on which home you pledge, how much equity it holds, your credit profile, and how the finished building will be paid off. A line cannot usually be opened on a structure that is still a foundation. The real decision is which asset secures the line and what retires it afterward.
- The line sits on a finished property you already own, not on the project being built.
- Ceilings depend on occupancy. An investment-property line tops out at 70% CLTV, while a primary-residence line can reach 90% only with a 720 or better credit profile.
- Most lines are drawn at least 75% at closing, so staged construction draws are not how these lines behave.
- A lender can freeze an undrawn line mid-build, which is the main weakness for a fixed-budget project.
- For an investor, a DSCR refinance of the completed, rented building is the usual way out.
Why Is There No Single Best HELOC for Construction?
A construction lender lends against what the building will be worth when it is done. A home equity line lends against what your existing property is worth today. Those are different questions, so the product behaves differently.
How large a line the equity supports.
An equity line is sized by combined loan-to-value, occupancy, and credit — not by rental coverage. Switch the occupancy or the credit band and the ceiling moves with it.
Investment-property lines require a 700 minimum credit score; second-home lines start at a 640 minimum and primary-residence lines at 600, and the combined-LTV ceiling steps down as the credit band drops on primary-residence and second-home lines and holds on investment-property lines; the line cap steps down on primary-residence lines and holds at every tier on investment-property and second-home lines.
A debt-to-income ratio above 45% requires 680+ credit. Profiles under 640 are limited to single-family homes. At least 75% of the approved line is drawn at closing. Ceilings, floors, and caps update from Lendmire’s centralized guideline source.
Line estimate
Illustrative estimate only — not a quote, Loan Estimate, approval, or commitment to lend. The rate is an editable assumption; equity-line pricing is variable through both the draw and repayment periods and never converts to fixed. Occupancy and credit drive the ceiling together: an investment property tops out at 70% combined LTV (minimum credit 700, line cap $500,000); a second home tops out at 90% combined LTV (minimum credit 640, line cap $500,000), with the ceiling stepping down as the credit band drops (the cap holds at every tier); a primary residence tops out at 90% combined LTV (minimum credit 600), and its $750,000 maximum line is available only at 75% combined LTV or below with a 700-or-better credit profile (720 on the longer-runway program) and a full appraisal. Lines above $500,000 require a full appraisal. Credit, debt-to-income, property type, and full underwriting review all affect the final line.
That means a line can pay for a build only when the collateral is somewhere else. It might be your primary residence, a second home, or a seasoned rental you already own. The structure going up is not the collateral, and the lender has no claim on it until it exists.
This has a practical consequence. You are moving leverage onto a different property. If the build stalls or runs over budget, both properties carry the stress, and the line stays attached to the original home until it is repaid.
Across the wholesale network Lendmire works with, the programs that write these lines are built for finished, insurable, standard residential collateral. They do not evaluate a construction budget or a draw schedule. They evaluate the equity in the home you pledge, your credit, your debt load, and the property type.
Key Terms Defined
HELOC (home equity line of credit): a revolving credit line secured by a home, which you borrow against and repay over time.
CLTV (combined loan-to-value): all loans against a property, first mortgage plus the new line, divided by its value.
Draw period: the stretch when you can borrow from the line, usually with interest-only payments.
Repayment period: the stretch after the draw period when the balance amortizes, so payments rise.
DSCR (debt service coverage ratio): monthly rent divided by the full monthly payment on a rental, meaning principal, interest, taxes, insurance, and any HOA dues.
Seasoning: the waiting period a lender wants between buying or finishing a property and refinancing it.
How Underwriting Treats a Construction-Funding Line, Step by Step
Here is how a file moves when the goal is to fund a build with a line on another property.
1. Pick the collateral. The lender needs a finished property with equity that fits the program. For most investors, this is a primary residence or a seasoned rental.
2. Run the CLTV test. The lender adds your first mortgage balance and the proposed line, then divides by current value. The result must fit the ceiling for your credit tier and occupancy.
3. Check credit and debts. Programs in the network start at a 600 floor on primary residences, 640 on second homes, and 700 on investment properties. Debt-to-income runs up to 50%, or 45% for credit profiles from 600 to 679. A ratio above 45% requires at least a 680 score.
4. Qualify on the maximum draw. The lender calculates the interest-only payment as if you borrowed the full line. A large line can therefore strain your ratio even if you plan to draw little.
5. Value the property. Lines at or below $500,000 ordinarily run an automated valuation with no traditional appraisal. A full appraisal is required on every line above $500,000, and you can request one in any case.
6. Close and draw. At least 75% of the line is drawn at closing. After that, the minimum subsequent draw is generally $1,000.
Step six matters most for builders. A contractor draw schedule pays out over months, but these lines front-load the money. You can park the proceeds, but you will carry the interest on them while the walls go up.
What the Network’s Home Equity Line Programs Allow
Lendmire is a mortgage broker, not a lender. It places standalone lines in first or second lien position through two wholesale programs: a higher-leverage program and a longer-runway program. Where the two differ, each figure below applies only within its own terms, and every figure is subject to lender guidelines and full file review.
The ceilings depend on how the property is occupied. The investment row is the one many builders miss.
| Occupancy | Top CLTV ceiling | Minimum credit | Maximum line |
|---|---|---|---|
| Primary residence | 90% (720+ only) | 600 | $500,000 at 90% CLTV; $750,000 at 75% CLTV, 700+ (720 on the longer-runway program) |
| Second home | 90% (720+ only) | 640 | $500,000 |
| Investment property | 70% | 700 | $500,000 |
Lower credit tiers step down from those ceilings. On a primary residence, for example, a 700 score typically reaches 85% CLTV up to $500,000 or 75% up to $750,000.
A line above $500,000 is primary-residence only. It needs a credit profile of 700 or better (720 on the longer-runway program), caps at 75% CLTV, and requires a full appraisal.
Two draw structures exist on primary residences and second homes. One is a 3-year interest-only draw followed by a 17-year amortizing repayment. The other is a 5-year interest-only draw followed by a 25-year repayment. Investment lines use the 5-year draw and 25-year repayment structure only. Some states shorten these terms.
Pricing on both programs floats through the draw and the repayment period and never converts to fixed. For a multi-month build, that means your carrying cost can move while you are mid-project.
These lines are available in 16 full-service states, which is narrower than Lendmire’s DSCR footprint of 41 markets, including Washington, D.C.
Structures and Variations That Exist
Line on your primary residence. This is the highest-leverage option. It is also the one that puts your home behind a business project, so size it with a cushion.
Line on a second home. The ceiling can match a primary residence at a 720 credit profile. The line cap is lower, at $500,000.
Line on a seasoned rental. An investment line runs at 70% CLTV at most, with a 700 minimum credit profile. A line like this can fund the next project without touching your home.
Closed-end home equity loan. This pays out as a lump sum and has no freeze risk once funded, since the money is already in your hands. It suits a fixed budget better than a line does. It suits uncertain costs worse, because you pay interest on all of it from day one.
Buying land with the line. Some investors use a line to buy land free and clear, then use the land as equity toward a construction loan. A BiggerPockets forum discussion describes this plan and questions whether the cash could simply serve as the down payment. The point of the structure is cross-collateralization, since the pledged property backs the project.
A construction loan. A real construction loan is sized to the as-completed value and pays out in inspected stages. That is the tool built for the job. A line is a funding source you assemble around it, or in place of it when you have deep equity elsewhere.
Where the Rule Breaks
The general rule is that a line on one property funds a build on another. These edge cases change the answer.
Your property is held in an LLC. LLCs, corporations, partnerships, and irrevocable, blind, or land trusts cannot hold title on these lines. Only an individual borrower or a revocable living trust can. A rental already deeded to an LLC needs a vesting change first, or a DSCR cash-out refinance instead.
The collateral is an ineligible property type. Manufactured homes, co-ops, condotels, log homes, commercial, mixed-use, and agricultural-zoned properties are not eligible. Modular factory-built homes are eligible on the longer-runway program only.
The property is on the market. In several states, a property listed for sale, or listed within the past 60 days, is ineligible.
The line is large. Above $500,000, you need a primary residence, higher credit, a full appraisal, and a 75% CLTV cap. A borrower is limited to three lines, with combined exposure capped at $2,000,000 on the higher-leverage program and $750,000 on the longer-runway program. A borrower owning more than 15 financed properties is not eligible.
The line freezes mid-build. This is the structural weakness for a fixed-budget project. The CFPB’s HELOC explainer states that a lender may stop additional draws if the home’s value drops significantly or if your finances change. Think of an undrawn line as permission to borrow, not committed money. The same federal guidance is written for consumer-purpose lines, so how much of it reaches a business-purpose line varies by lender and file.
The draw period ends. The CFPB’s HELOC brochure explains that a variable-rate line can change your payment even if you borrow nothing more. It also notes that some plans make the whole balance due at once at the end of the draw. Plan the exit before the build starts, not after.
The budget runs over. A BiggerPockets Money podcast episode features an investor who funded a construction project on a HELOC and hit cost overruns. The host argued a HELOC still beats hard money as a funding source other than cash. Both points can be true. The line is cheap flexibility until the build outruns the line.
Here is a pattern that shows up often across files like these. Borrowers size the line to the contractor’s bid and forget the contingency. The investors with the smoothest builds pledge equity for the bid plus a real cushion, and they confirm the exit financing before they pull a dollar.
The DSCR Takeout: What Retires the Line
A line on one property does not pay itself off when the building on another is done. Something has to.
For an investor, that something is usually a refinance of the finished, rented building, or a sale. DSCR financing is generally the permanent takeout after construction, not the build-phase funding. DSCR loans qualify primarily on property-level rental income covering the payment, subject to lender guidelines, which is why they fit a completed rental. The complete DSCR loans guide covers how the ratio works from the ground up.
These are the program ranges worth knowing when you plan the exit. They are typical ranges, not promises.
- Cash-out refinance: tops out around 75% LTV on standard rentals across most of the network, and about 6 months of seasoning is the common expectation. Short-term-rental collateral cash-out is capped at 70%.
- Purchase: most files land at 75% to 80% LTV on a long-term rental. Select programs reach 85% LTV with roughly a 700+ score.
- Coverage: 1.00 is where select programs start, and stronger ratios open better pricing and leverage. A separate select-lender path goes below 1.00, with leverage and terms adjusted.
- Credit: a 620 floor exists in parts of the network, most programs want around 660, and 700+ unlocks the strongest leverage tiers.
- Loan size: up to $3,000,000 on standard programs (smaller balances available through select lenders), with 30-year fixed structures the spine and extended terms, interest-only periods, and ARMs available through select lenders.
- Reserves: commonly around 6 months of PITIA, which means principal, interest, taxes, insurance, and association dues. They vary by lender, leverage, and loan size.
Clearing 1.00 does not mean the property produces positive cash flow. DSCR compares rent only to PITIA, so repairs, vacancy, management, utilities, and capital reserves sit outside the calculation.
A DSCR construction product that converts automatically to a permanent loan exists at some lenders in the wider market, and naming varies. Do not assume it applies here. Ask for the current options on your specific file.
What the Decision Looks Like in Practice
Picture an investor with a paid-off primary residence, a 720 credit profile, and land elsewhere where she plans to build a duplex. She sizes a primary-residence line well inside the 90% ceiling, because she wants the equity cushion in case of a freeze. She keeps the line far below the point where her debt-to-income ratio, tested on the full draw, comes under pressure.
She builds. The line is drawn mostly at closing, so she holds the funds in cash and pays the contractor on the schedule. When the duplex is finished and leased, she checks whether the rent clears roughly 1.2x coverage. Then she plans a cash-out refinance at no more than 75% LTV on a standard rental, after the common seasoning period. The proceeds repay the line and release the pressure on her home. Exact terms depend on the lender’s guidelines, property type, leverage, and a full review of the borrower’s file.
Now change one input. The same investor owns a rental instead of a paid-off home, and the rental is titled in an LLC. The line is off the table until she changes vesting. If she uses a personal-name seasoned rental, the ceiling falls to 70% CLTV at a 700 minimum credit profile, and the line tops out at $500,000.
The strongest files clear two tests: enough equity on the collateral and enough rental coverage on the finished property.
Frequently Asked Questions
Can I open a HELOC on the property I am building?
Generally not. The collateral does not exist yet, and these programs are built around finished, insurable properties. Investors fund the build with a line on a different property, then place permanent financing on the building once it is complete.
Is a HELOC better than a construction loan?
It depends on the project. A construction loan pays out in inspected stages against the as-completed value, which fits a fixed budget. A line fits an investor with deep equity elsewhere who wants flexibility and accepts the freeze risk and floating pricing.
What CLTV can I get on an investment property line?
On an investment property, the ceiling is 70% CLTV, with a 700 minimum credit profile and a $500,000 maximum line. The 90% ceiling applies only to primary residences and second homes at 720 or better, and every figure is subject to lender guidelines.
Can an LLC borrow against a rental for a construction project?
No. Title must be held by the individual borrower or a revocable living trust. A rental already in an LLC needs a vesting change first, or a DSCR cash-out refinance is the better route.
How does DSCR fit into a construction project?
DSCR is usually the exit. After the building is finished and rented, a refinance qualifies primarily on property-level rental income covering the payment, subject to lender guidelines, and the proceeds repay the line.
Next Step
If you are considering a home equity line and want to see how the numbers work, Lendmire can help you compare HELOC options based on the property, the equity available, credit profile, combined leverage, and your goals. Request a quote through Lendmire, and an illustrative calculator estimate can give you a starting picture before you decide.
Build seasons end and contractor bids expire, but the exit plan is what decides whether a construction line works for you, so settle the takeout before the first draw.
About Lendmire
Lendmire, NMLS# 2371349, is a mortgage brokerage that arranges home equity lines of credit through wholesale lending partners in its 16 full-service states. Lines on primary residences, second homes and investment properties are each reviewed individually by the lender under the program’s occupancy, credit and combined-loan-to-value guidelines. Scotsman Guide named Lendmire a Top Mortgage Workplace in both 2025 and 2026.
Investors who want the broader program framework can review how DSCR loans work.
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Informational only. Not a Loan Estimate, approval, or commitment to lend. Program availability and eligibility are subject to lender guidelines, credit approval, property review, and underwriting.
References
1. BiggerPockets: using a HELOC to buy land for ground-up construction
4. BiggerPockets Money podcast on a construction HELOC
This article is part of Lendmire’s HELOC & home equity loan program — full qualification details, guidelines, and scenarios live on the program page.
Related reading: Best Investment Property HELOC Program to Fund Business Equipment · Best Investment Property HELOC Program to Fund a Flip or BRRRR Project · Best Investment Property HELOC Program to Fund a Remodel in Stages
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.