
The Quick Read: A home equity line of credit can help pay for a new build, but it borrows against a property you already own, not the house you are about to build, so the right provider depends on your equity, credit, and which property secures the line. Lendmire is a mortgage broker that works with select wholesale HELOC lenders. It does not rank lenders, because the best program for your situation depends on the file.
- A HELOC is secured by existing equity, not by the future home.
- On an investment property, the network’s ceiling is 70% combined loan-to-value (CLTV), with a 700 minimum credit profile.
- On a primary residence, the ceiling reaches 90% CLTV, but only at 720 or better.
- At least 75% of the line is drawn at closing, so it does not work like staged construction draws.
- After the build is done, a DSCR loan on the finished rental is the usual long-term exit.
Key Terms Defined
HELOC: a home equity line of credit, which lets you borrow against your equity up to a set limit.
Equity: what your property is worth minus what you owe on it.
CLTV (combined loan-to-value): all loans on the property, added together, divided by its value.
Draw period: the stretch of the loan when you can borrow from the line.
DSCR: debt service coverage ratio, which compares a rental’s monthly rent to its full monthly payment of principal, interest, taxes, insurance, and any association dues (PITIA).
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.
Can a HELOC Actually Fund a New Build?
Yes, as a funding source for part or all of a build, with one catch: the line is secured by a different property. Credit Karma’s HELOC explainer notes that a HELOC uses your home as collateral, which puts it at risk if you can’t repay.
Nobody can lend against a house that does not exist. A construction loan looks at the future completed value. A HELOC looks at current equity in something you already own.
That difference drives everything else here. The lender cares about the collateral property’s value, your credit, and your debt load. It does not care about your floor plan.
Once the line is open, most HELOC lenders place no rules on how you spend the money. Always confirm that a given lender allows ground-up construction as a use of funds.
How Underwriting Treats a HELOC Step by Step
A HELOC file moves through six checks. Each one can shrink or stop the line.
1. Collateral. The lien goes on an existing property you own. That can be a primary residence, a second home, or an investment property.
2. Title. The borrower must hold title personally or in a revocable living trust. LLCs, corporations, partnerships, and irrevocable or land trusts cannot hold title on these lines. A property already deeded to an LLC needs a vesting change first, or a DSCR cash-out refinance instead (subject to program terms).
3. Value. Lines at or below $500,000 ordinarily use an automated valuation with no traditional appraisal. A higher CLTV may call for a second valuation. Every line above $500,000 requires a full appraisal.
4. Limit. The lender applies a CLTV cap to that value and subtracts your existing first mortgage. The CFPB booklet on HELOCs explains this math: the limit is a percentage of value minus what you owe.
5. Credit and debt. The network uses a single-bureau score tied to the primary wage earner. Debt-to-income tops out at 50%, and drops to 45% for scores from 600 to 679. The lender reviews your file on the interest-only payment calculated on the maximum draw.
6. Eligibility. Single-family homes, 2-4 units, PUDs, townhomes, and condos (including non-warrantable) are eligible. Manufactured homes, co-ops, condotels, log homes, commercial, mixed-use, and agricultural-zoned properties are not.
Lines move through select wholesale lenders. A broker shops the file across them and matches the scenario to the program.
What the Limits Look Like by Property Type
The ceiling depends on how the collateral property is used. Never read one occupancy’s ceiling as another’s.
| Collateral | Max CLTV | Credit needed | Max line |
|---|---|---|---|
| Investment property | 70% | 700+ | $500,000 |
| Second home | 90% | 720+ | $500,000 |
| Second home | 75% | 640+ | $500,000 |
| Primary residence | 90% | 720+ | $500,000 |
| Primary residence | 75% | 700+ (720 on the longer-runway program) | $750,000 |
Primary residences step down by credit tier. At a 620 credit profile the cap is 70% CLTV, and the program floor is 600. Second homes floor at 640. Investment lines floor at 700. Every figure here is subject to lender guidelines and full file review.
A line above $500,000 is for primary residences only. It requires 700 or better (720 on the longer-runway draw structure described below) and caps at 75% CLTV.
Here is a modeled example, not a market fact. Say your rental’s first mortgage uses about 55% of its value. On an investment property, the 70% CLTV ceiling leaves roughly 15% of value for a line. Now say a primary residence has a first mortgage at about 60% of value, and you have a 720 credit profile. The 90% ceiling leaves up to about 30% of value, still capped at $500,000.
The Structures That Exist
The network offers standalone lines in first or second lien position. Two draw structures exist on primary residences and second homes:
- A 3-year interest-only draw followed by a 17-year repayment period.
- A 5-year interest-only draw followed by a 25-year repayment period.
Investment-property lines use the 5-year draw and 25-year repayment structure only. The longer-runway structure is the 5-year/25-year one. Tennessee shortens both structures.
Market-wide, repayment periods often run ten or 20 years, according to the CFPB. In the network, investment lines repay over 25 years.
Three features matter for a builder:
- Draw at closing. At least 75% of the line is drawn at closing. You cannot hold the whole line in reserve and pull funds only as the builder invoices you.
- Floating pricing. Pricing floats across both the draw and repayment periods and never converts to fixed.
- Later draws. After closing, the minimum subsequent draw is $1,000 on the longer-runway structure (Texas is $4,000).
Line sizes run from $25,000 to $750,000. Michigan’s floor is $10,000.
Because most of the line is funded upfront, you pay interest on money your builder may not touch for months. Fund the build in stages and you may carry unused cash. A construction loan releases money against milestones, which is the better fit for a long build.
Where the General Rule Breaks
A few edge cases change the answer.
The lender can shrink the line. HELOC lenders may reduce your credit line if the collateral home’s value drops, per the CFPB’s HELOC explainer. That is a real risk mid-build, when you have already committed funds to a contractor.
Selling the collateral. If you sell the property that secures the line, you generally have to pay the line off in full.
Rental-use restrictions. Some line agreements limit renting out the collateral home. If the collateral is your rental, confirm the lender treats it as an investment property.
Construction discipline. Because the money is available immediately, no inspector stands between your funds and your contractor. A construction loan builds that checkpoint in.
The recourse picture. A HELOC lien sits on your existing property. If the build stalls or costs overrun, the payments and the lien stay with the collateral property while the new house sits unfinished.
Ownership limits. You can hold only three lines at once. Combined exposure caps at $2,000,000 on the higher-leverage program and $750,000 on the longer-runway program. Someone with more than 15 financed properties is not eligible.
Listed properties. A property listed for sale, or listed within the past 60 days, is ineligible in NC, PA, TN, TX, and WA.
Credit history. A bankruptcy needs 4 years of seasoning from discharge or dismissal. Foreclosure history splits by program: one seasons it for 7 years, with 4 years for a deed-in-lieu or short sale, and the other declines it entirely.
HELOC availability through Lendmire is limited to its 16 full-service states: AL, CA, CO, FL, GA, IN, MI, MT, NM, NC, OH, PA, TN, TX, VA, and WA. That is narrower than the 41-market DSCR footprint.
How to Choose a Provider for a Build
Lendmire does not name or rank lenders, and a single ranking could not tell you which one fits. The lenders that write your line depend on the collateral, your credit, and your leverage need. Use this checklist when you compare programs:
- Use of funds. Does the program allow construction costs, land purchase, or a down payment?
- Collateral type. Is your property a primary home, second home, or investment property? The ceiling differs for each.
- Title. Can you hold title personally or in a revocable trust?
- Valuation. Does the line need a full appraisal, or can an automated valuation cover it?
- Draw structure. Does the 3-year or 5-year runway match your build schedule?
- Draw at closing. Can you afford the interest on 75% of the line from day one?
- Combined debt. How will your existing mortgage, the new line, and any later mortgage count in your debt-to-income ratio?
A broker that shops multiple wholesale lenders can run your scenario against several programs. A single lender can only show you its own.
HELOC, Construction Loan, or Cash-Out: A Quick Comparison
| Factor | HELOC | Construction loan | Cash-out refinance |
|---|---|---|---|
| Collateral | Existing property | The new build | Existing property |
| Funds release | Mostly at closing | Against milestones | Lump sum |
| Pricing | Floats, never fixed | Varies by lender | Varies by program |
| Existing first mortgage | Stays in place | Stays in place | Replaced |
| Best fit | Gap or down payment | Full ground-up build | Large equity pull |
None of these wins on every file. A stalled project is the main thing to plan around, since each option leaves a lien on a property you own.
Where DSCR Financing Enters
A lender’s review of property rent applies to the finished rental, not the build. A HELOC runs on personal credit and documented debt-to-income. A DSCR loan is reviewed primarily on property-level rental income covering the payment, subject to lender guidelines. DSCR loans are business-purpose loans designed for non-owner-occupied investment properties.
The common investor path looks like this: fund the build with a construction loan or a HELOC on other equity, lease up the finished property, then refinance into DSCR financing. Across the wholesale network, a cash-out refinance on a standard rental tops out around 75% LTV. About 6 months of seasoning is the common expectation. Coverage of 1.00 is where many select programs start. A separate select-lender path takes coverage below 1.00, with leverage and terms adjusted. Purchase leverage mostly runs 75%-80%, and a typical credit floor sits around 660. Every figure here varies by lender and program — guidelines, property type, leverage, and credit profile all apply.
Clearing 1.00 is not the same as positive cash flow. Repairs, vacancy, management, utilities, and capital expenses all sit outside the calculation. Read the complete DSCR loans guide for how the ratio works across loan types.
Lendmire’s piece Top HELOC Providers to Buy Another House covers the purchase side of the same equity. Its guide to refinancing a balance into a new investment property HELOC covers moving an existing balance.
Tax treatment can depend on how the funds are used and how the property is held. Borrowers should keep clear records and speak with a qualified tax professional before relying on any deduction.
Frequently Asked Questions
Can I use a HELOC to pay for the whole build?
Sometimes, if the line is large enough. Investment-property lines cap at $500,000, and primary-residence lines reach $750,000 at the right credit tier and CLTV. Many builds cost more than the equity supports, so investors often pair a line with a construction loan or use it for land and the down payment.
Does the line use the new house as collateral?
No. The lien goes on a property you already own, and the new build only becomes part of your portfolio once it exists. When it is done, you can refinance it, subject to lender guidelines.
Do I need an appraisal?
Lines at or below $500,000 ordinarily use an automated valuation instead of a traditional appraisal. A higher CLTV may require a secondary valuation, and a full appraisal is required on every line above $500,000. You can also request a full appraisal at any size.
What credit score do I need?
It depends on the collateral. The program floor is 600 on primary residences. Second homes floor at 640, and investment-property lines floor at 700. Scores of 720 or better unlock the highest ceilings, and every figure is subject to lender guidelines.
Can an LLC borrow against its rental to fund a build?
No. The borrower must hold title individually or in a revocable living trust. A property already in an LLC would need a vesting change or a DSCR cash-out refinance, depending on program terms.
What to Do Next
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 or call 828-256-2183 to talk through your build plan. Every figure above is subject to lender guidelines. This is not a commitment to lend.
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. Credit Karma’s HELOC explainer
2. CFPB booklet – What you should know about home equity lines of credit
3. CFPB: What Is a Home Equity Line of Credit 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: Top DSCR HELOC Providers for a Down Payment on Your Next Home · Top DSCR HELOC Providers on a Rental Held in an LLC · Top Investment Property HELOC Providers Without Your Spouse on the Loan
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.