The Quick Read: A home equity line works best as the equity source behind a ground-up build, not as the loan that pays for all of it, because the line is secured by an existing property rather than the new construction, tops out at a modest size on a rental, and the permanent financing usually comes later.
- On Lendmire’s wholesale network, an investment-property line tops out at 70% combined loan-to-value (CLTV) and $500,000.
- The line is qualified on you, meaning credit, income, and debt load, not on what the new building will rent for.
- Title must sit in your name or a revocable living trust. An LLC cannot hold title on this product.
- The best program for your build depends on which property secures the line, how much equity it has, and how the build is taken out afterward.
Key Terms Defined
HELOC (home equity line of credit): a revolving line of credit secured by the equity in a property you already own.
CLTV (combined loan-to-value): your existing mortgage balance plus the new line, divided by the property’s value.
Equity: what the property is worth minus what you owe on it.
Draw period: the stretch when you can borrow from the line, followed by a repayment period when the balance is paid down.
Construction loan: financing sized to the finished project and released in stages as work is completed.
DSCR loan: a loan that qualifies primarily on property-level rental income covering the payment, subject to lender guidelines. DSCR stands for debt service coverage ratio, meaning rent divided by the full monthly housing payment.
Certificate of occupancy (CO): the local sign-off that a new building is finished and legal to occupy.
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.
Why a HELOC Funds the Equity, Not the Whole Build
The line sits on a property that already exists. It does not sit on the building you are about to put up. That single fact explains almost everything else here.
A construction loan works the opposite way. It is sized to the completed project, and the lender releases money in stages as inspections confirm finished work. A HELOC has no stages and no inspections. You get a line, you draw cash, and you spend it. Your leverage is capped at what the collateral supports today, not at what the building will be worth later.
So a HELOC rarely replaces a construction loan. It usually pays for pieces of the build: the land purchase, the down payment, or the equity a construction lender wants to see. Some investors also use it to cover a smaller project outright, but only when the whole budget fits inside the line.
Investors also use a HELOC for renovations or an addition on an existing rental. That is not a ground-up build, and the math is simpler because the line and the project sit on the same property. Lendmire’s piece Best Investment Property HELOC Program to Fund New Construction covers the broader version of this question.
What Makes the Best Investment Property HELOC Program for a Construction Build?
The best program for your build is the one whose limits cover your budget and whose title rules match how you hold the property. No single program wins for every investor. Lendmire is a mortgage broker, not the lender. It shops a wholesale network of HELOC lenders and matches the file to a program.
Here is how the investment-property line works across that network. Every figure is subject to lender guidelines and full file review.
| Feature | Investment-property line |
|---|---|
| Maximum CLTV | 70% |
| Line size | $25,000 to $500,000 |
| Minimum credit profile | 700 |
| Draw structure | 5-year draw, 25-year repayment |
| Drawn at closing | At least 75% of the line |
| Title | Individual or revocable living trust |
| Valuation | Usually automated, no traditional appraisal |
Three details matter for a build.
Credit above 700 buys eligibility, not leverage. Profiles at 700 and at 720 reach the same 70% CLTV on an investment property. Raising your score further will not stretch the line.
Most of the line is drawn at closing. At least 75% of it is funded on day one, and the pricing floats for the life of the loan. A build normally spends money in stages. A line that funds mostly up front means you carry the cost of cash you have not used. Plan for that before you sign.
The $500,000 cap is real. Many ground-up budgets are larger than that. If yours is, the line can still cover a slice of it, but not the whole job.
Lines on a primary home or second home work differently. They can reach 90% CLTV, but only at a 720-or-better credit profile. A primary-residence line above $500,000 also requires a full appraisal and a credit profile of 700 or better (720 on the longer-runway structure, which is the 5-year draw and 25-year repayment version). Primary-home lines come in two draw structures. Investment lines use only the longer-runway one.
Across the network, lenders also check your debt-to-income ratio, which tops out at 50%, and they qualify you on the interest-only payment calculated on the maximum draw. A borrower can hold up to three of these lines at once. An investor with more than 15 financed properties is not eligible.
Availability is narrower than the DSCR side of the business. These lines are offered in 16 full-service states, while Lendmire’s DSCR investor programs cover 41 markets, including Washington, D.C.
How Underwriting Treats the Line, Step by Step
Step 1: Pick the collateral. Candidates are a free-and-clear rental, a low-leverage rental, your primary home, or a second home. Equity is the only thing that matters here. A vacant lot with no equity cannot secure a line.
Step 2: Run the CLTV math. Add your existing mortgage balance to the new line you want, then divide by the property’s value. On an investment property the result cannot exceed 70%.
Step 3: Qualify the borrower. The lender looks at credit, income, and total debt. The network uses a single-bureau score keyed to the primary wage earner, with a credit report no more than 90 days old at closing. The rent from the property is not what qualifies you.
Step 4: Value the property. An investment line is capped at $500,000, and full appraisals begin above that size. So these lines usually run on an automated valuation model, a computer-generated value estimate, with no traditional appraisal. A higher CLTV can require a second valuation, and you may request a full appraisal if you prefer one.
Step 5: Close and draw. After closing, you can draw up to your limit during the draw period. Later draws carry a minimum amount, typically around $1,000 on the longer-runway structure.
Step 6: Move the cash into the build. Nobody inspects the work before the cash comes out. You decide what the money pays for, so your own budget discipline replaces the lender’s draw schedule.
Step 7: Plan the exit. If the building is a long-term hold, the permanent loan is typically a DSCR takeout after the CO. More on that below.
The CFPB’s plain-English HELOC guide describes the same draw-then-repayment pattern and warns that you can lose the property that secures the line if you cannot repay. That warning matters most when the collateral is your own home.
Which Property Should Secure the Line?
Collateral is the first decision, and it changes your risk and your limits.
| Collateral | Max CLTV | Main tradeoff |
|---|---|---|
| Existing rental | 70% | Lower cap; title cannot be an LLC |
| Primary home | Up to 90% (720+ only) | Your home is at risk |
| Second home | Up to 90% (720+ only) | Fewer investors own one with equity |
| Vacant land, no equity | Not available | Nothing to secure the line |
A line on a rental puts the rental at risk. A line on your primary home puts your home at risk if the build runs over or stalls. Many investors prefer the rental as collateral for that reason, even with the lower ceiling. Others take the home line because the higher CLTV buys more cash. Neither is wrong, but you should choose with the downside in view.
A second lien also affects what comes later. A HELOC added to a property with an existing mortgage becomes a second mortgage, paid in addition to the first, as the CFPB’s home equity guidance explains. The new payment counts toward your debt load when a construction lender reviews you and again when a DSCR lender reviews you for the takeout.
Getting this kind of line on a rental is harder than on a home. Experian notes that not every lender offers one. Many large retail lenders screen out non-owner-occupied collateral before underwriting starts. A broker that places files across several wholesale lenders can reach programs a single bank branch will not show you.
Structures That Actually Fund a Build
Most builds that use a HELOC follow one of three patterns.
1. HELOC as equity, construction loan as the main money. The line covers the land or the down payment. The construction lender funds the rest in stages. The new payment still counts in your debt load.
2. HELOC for the whole budget. This works only when the total cost fits under the line and the CLTV ceiling. It is the simplest structure and the rarest fit.
3. Interim financing, then a DSCR takeout. You build with an interim construction loan, or with cash from a line, and then refinance into permanent DSCR financing after the CO.
Here is how the products compare.
| Product | What it answers | Sized on |
|---|---|---|
| Investment HELOC | How much equity can I tap? | Equity, credit, CLTV |
| Construction loan | What will it cost to build? | Project budget, milestones |
| DSCR takeout | Does the finished rental carry itself? | Rent versus payment |
On the DSCR side, Lendmire’s complete DSCR loans guide covers the full program. The short version for a build is this: a DSCR loan is permanent financing on a finished, rentable property. It is not construction money. Most DSCR lenders do not fund construction draws. A few specialty lenders offer construction-to-permanent products, but those are construction-loan programs with a DSCR exit attached.
For a one-unit new build, the rent figure typically comes from the appraiser’s Form 1007 rent schedule, a standard rent estimate for a single-family property. DSCR coverage compares rent to the full housing payment. Select programs start at 1.00 coverage, and a separate select-lender path accepts coverage below 1.00 with leverage and terms adjusted. A ratio above 1.00 does not mean the property produces positive cash flow, because repairs, vacancy, management, and utilities sit outside the calculation.
If you already own the property and want to pull cash out instead of building new, standard cash-out refinances top out around 75% LTV across most of the network, with about six months of seasoning as the common expectation. That is a different tool for a different problem. Terms vary by lender guidelines, property type, leverage, credit profile, and full file review.
A Worked Example
Say you own a rental worth well over the line cap, with a first mortgage at about 50% of its value. The ceiling is 70% CLTV, so roughly 20 points of value are available. That is the CLTV limit.
Now compare it to the same rental owned free and clear. The CLTV limit would be 70 points of value. But the $500,000 line cap applies either way. If 70 points of value comes to more than $500,000, the line cap is what binds. If it comes to less, the CLTV is the limit.
Next, test the line against your build budget. If the budget is larger than the line, you have an equity piece, not a funding source. Plan for the construction loan or other cash to cover the gap. If the budget fits, remember that at least 75% of the line is drawn at closing, so you start paying on cash before the project needs it.
This example is a modeled illustration, not a quote. Actual limits depend on the property, the borrower, and lender guidelines.
Where the Rule Breaks
LLC-held rentals. The network does not allow LLCs, corporations, partnerships, or irrevocable, blind, or land trusts to hold title on an equity line. If your rental sits in an LLC, you need a vesting change or a DSCR cash-out refinance instead. A DSCR cash-out can often be arranged for LLC-titled properties, subject to program terms, and it is sized on rent, not on your personal debt load.
Vacant land. With no equity, there is nothing to secure a line. A construction loan is the tool.
Line too small. A $500,000 ceiling will not cover many ground-up budgets by itself. The line can still anchor a larger plan.
Primary home turned rental. Check the line’s terms before you convert a home you live in into a rental. Occupancy changes can violate the agreement.
Sale of the collateral. A HELOC is generally payable in full when the property is sold.
Ineligible property types. Manufactured homes, co-ops, condotels, log homes, commercial, mixed-use, and agriculturally zoned properties are not eligible. Barndominiums also fall outside the network’s DSCR programs. A property listed for sale, or listed within the past 60 days, is ineligible in several of the 16 states.
What Can Go Wrong Mid-Build
The risk most investors underestimate is the line itself shrinking. If the collateral’s value drops, a lender can cut the unused portion. With a build in progress, that can leave you short of cash at the worst moment. Drawing the funds you need early protects you from that, though it also means paying on money you have not spent.
Costs also run over. A HELOC has no contingency built in. Hold a cash reserve for the overrun, or size your line well above the base budget.
The payment floats. Pricing on these lines moves across both the draw and repayment periods and never converts to fixed. A larger balance with a changing payment can strain your debt-to-income ratio right when you apply for the next loan.
Finally, the takeout is not automatic. A DSCR lender will review the finished property, the rent, your credit, and your total debt. A second lien on another property can reduce your reserves and weigh on the review, so plan the sequence before you start.
Who Fits, and What to Prepare
An investment-property line tends to fit you if you hold a rental in your own name or a revocable trust, have at least a 700 credit profile, have meaningful equity, and need a piece of capital, not the whole budget.
It tends not to fit you if your rental sits in an LLC, your equity is thin, your budget is large, or you need money released against build milestones. A construction loan or a DSCR cash-out refinance fits better.
Before you apply, gather the following:
- A current mortgage statement on the collateral property.
- A realistic total budget for the build, with a contingency.
- Your credit profile and a list of your debts.
- Documentation of how the property is titled.
- A plan for the permanent loan after the CO.
The right program depends on your property, your credit profile, your leverage needs, and your exit.
Next Steps
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. The illustrative calculator on this page gives a rough estimate, not a quote or commitment to lend.
Frequently Asked Questions
Can a HELOC on a rental pay for building a new house on a different lot?
Yes, if the rental has enough equity and the line is large enough for the budget. The line stays secured by the rental, not by the new lot or building. Cash from the line works like any other cash, so you can use it for land, a down payment, or construction costs.
Can an LLC borrow an investment-property HELOC?
No. Title must be held by you as an individual or by a revocable living trust. If your rental is in an LLC, you would need a vesting change or a DSCR cash-out refinance instead. The DSCR route is subject to lender program eligibility.
Does a higher credit score raise the amount I can borrow on a rental?
Not on this product. Profiles at 700 and at 720 reach the same 70% CLTV and the same $500,000 ceiling on an investment property. A stronger score helps you qualify, but it does not stretch the line.
Will a DSCR loan fund the construction itself?
Generally not. A DSCR loan is permanent financing on a finished, rentable property. Most DSCR lenders do not fund construction draws, so investors typically use interim financing during the build and refinance into DSCR after the certificate of occupancy.
Is a primary-home line or a rental line better for a build?
It depends on your tradeoff. A primary-home line can reach up to 90% CLTV at a 720-or-better profile, but it puts your home at risk. A rental line caps at 70% CLTV and puts the rental at risk. The right choice depends on your equity, your risk tolerance, and your exit plan.
About Lendmire
Lendmire (NMLS# 2371349) is a mortgage brokerage serving homeowners and real estate investors in its 16 full-service states. Home equity lines of credit are arranged through wholesale lending channels; Lendmire brokers the line and the lender underwrites each application under its occupancy-based guidelines. Scotsman Guide named Lendmire a Top Mortgage Workplace in both 2025 and 2026.
Get Started
Ready to find the right loan for you?
See your offer in seconds. No credit pull, no obligation.
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. CFPB’s plain-English HELOC guide
2. CFPB’s home equity guidance
3. Experian
This article is part of Lendmire’s investment property HELOC program — full qualification details, guidelines, and scenarios live on the program page.
Related reading: Can You Get an Investment Property HELOC on Business Deposits? · Can You Get an Investment Property HELOC During a Divorce? · How to Qualify for an Investment Property HELOC Subordinated for a Refinance
Brandon Miller
Founder & CEO, Mortgage Loan Originator, Lendmire LLC
- Mortgage Loan Originator · NMLS# 1129696 · Verify on NMLS Consumer Access
- North Carolina Real Estate Broker · License# 343312 · Verify on NCREC
- North Carolina Insurance Producer · License# 19053198 · Property, Casualty, Life, Health · Verify on NAIC SBS
- Lendmire LLC · Firm NMLS# 2371349 · Verify firm licensure
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.