Banks That Offer a HELOC to Build a New House

The Quick Read: A HELOC does not fund a build the way a construction loan does: it is a revolving line secured by a finished property you already own, underwritten on that property’s equity plus your credit and income, and the new house is simply where you spend the money. No single list of banks does this for new construction. What matters is which lenders will write the line on your collateral, at your leverage, in your ownership structure.

• On an investment property, the network ceiling is 70% combined loan-to-value (CLTV), with a 700 minimum credit score and lines up to $500,000.
• On a primary residence or second home, the ceiling reaches 90% CLTV, and only at a 720-or-better credit profile.
• LLCs and corporations cannot hold title on these lines, which is the sharpest difference from a DSCR loan.
• At least 75% of the line is drawn at closing, so a build budget has to account for early interest.
• A HELOC never converts into a permanent mortgage on the new house. You need a planned takeout.

Which Banks Offer a HELOC for Building?

Many banks offer equity lines, but the line is tied to the collateral, not to the project. A lender that approves a line on your current home generally does not care whether the money goes to a kitchen, a down payment, or a foundation.

That is why a bank list is the wrong tool. Lendmire is a mortgage broker, not a lender. It works with a network of wholesale HELOC lenders and matches your property, equity, credit, and structure to the program that fits. The right program for you depends on occupancy, credit profile, how much leverage you need, and who holds title.

Here is what these lenders look for, and where the line stops working for a build.

How Does Underwriting Treat a HELOC Used to Build?

The underwriter treats it as a loan on the existing property. Four steps explain most outcomes.

1. Collateral is the existing property. The line is a second lien, or sometimes a first lien, on a completed home or rental you own. A vacant lot or unfinished structure is not the collateral. Land you own free and clear can help a construction loan application, but it does not carry a HELOC by itself.

2. Leverage is capped by CLTV. CLTV adds your existing mortgage balance and the new line, then divides by the property’s value. The cap depends on occupancy and credit score.

3. Valuation is light on small lines. Lines at or below $500,000 ordinarily use an automated valuation instead of a traditional appraisal, though higher leverage may require a second valuation. A full appraisal is required on every line above $500,000, which only primary residences can reach, and you can request one on any line. Nobody appraises the house you plan to build.

4. Personal income and credit drive approval. Debt-to-income (DTI) is capped at 50%, or 45% for credit profiles from 600 to 679. A ratio above 45% requires a 680 minimum. The lender reviews your file on the interest-only payment calculated on the maximum draw, not on what you plan to draw.

A DSCR-style rental coverage test is not how these lines are underwritten. Rent on the collateral does not rescue a weak personal profile.

What Are the Leverage and Credit Limits?

Limits split by occupancy, and the ceiling for your occupancy is the only one that matters. Each figure below is subject to lender guidelines and full file review. The table shows the standard maximum line of $500,000 at the top tier; a larger primary-residence line is covered in the paragraph after it.

Lower credit tiers step the primary-residence ceiling down in stages. At 640 it is 80%, at 620 it is 70%, and at 600 it is 60%. Lines can start at $25,000. Only primary residences can go higher than $500,000, and those lines need a full appraisal, at least a 700 credit profile, and a cap of 75% CLTV.

Property type also matters. Single-family, 2-4 unit, PUD, townhome, and condominium (including non-warrantable) are eligible. Manufactured homes, co-ops, condotels, log homes, and commercial or mixed-use properties are not. The lines also do not take agricultural zoning.

Picture an owner with a 720 score and a primary residence carrying a modest first mortgage. That owner may reach the 90% tier. Now picture an investor pulling from a rental with a 700 score. That investor tops out at 70% CLTV no matter how strong the file is. Same equity story, very different draw capacity.

How Do Draws and Repayment Work During a Build?

Draws are not gated by milestones. A construction loan releases money in stages as inspections pass. A HELOC does not inspect your build, so you control timing and carry the discipline.

Two structures exist on primary residences and second homes. The three-year structure has a three-year interest-only draw, then 17 years of full amortization. Investment lines run only the five-year structure.

For a build, runway matters. A ground-up project that stretches past a three-year draw leaves you repaying principal before the house can produce rent or sell.

Two network rules catch builders off guard:

• At least 75% of the line is drawn at closing. You do not hold a large undrawn balance and pull it down gradually. Interest starts on most of the line immediately, and a rental under construction has no income.
• Pricing floats and never converts to fixed. It floats through both the draw and repayment periods. The CFPB’s HELOC overview notes that HELOCs usually carry variable pricing and that some plans offer fixed conversion. That option does not exist on these wholesale lines, so plan for payments that can move.

After closing, the minimum subsequent draw is $1,000 under the five-year structure. The three-year structure does not state one.

The CFPB’s HELOC booklet also notes that a lender may reduce a credit line under certain conditions, such as a drop in home value. Across a multi-month build, a frozen or reduced line is a real funding risk. A construction loan can carry its own risks, but it is built for the project.

Where the General Rule Breaks

Most of these exceptions are structural, not matters of credit.

Rentals held in an LLC. Title must sit with the individual borrower or a revocable living trust. LLCs, corporations, partnerships, and irrevocable, blind, or land trusts cannot hold title. A rental already deeded to an LLC needs a vesting change before it can back a line. A DSCR cash-out refinance is the other path for LLC-titled property, subject to lender program eligibility.

Little equity. Run the CLTV math before you apply. If your existing loan already sits near the cap for your tier, the line may be too small to matter. Equity plus credit has to clear together.

Land only. If the plan is to borrow against the lot you just bought, a HELOC is the wrong product. A construction loan lends against future completed value. A HELOC cannot.

Rental collateral. Lines on investment property exist on this network, but they are the tightest tier: 70% CLTV, 700 minimum credit, $500,000 maximum. Some large retail banks limit equity lines to owner-occupied homes. Others offer a similar product under a different name.

Many properties. 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 with more than 15 financed properties is not eligible. Those two programs correspond to the two draw structures above.

Derogatory history. A bankruptcy needs four years of seasoning. Foreclosure-family history splits by program on primary residences and second homes. One program seasons a foreclosure at seven years and a deed-in-lieu, pre-foreclosure, or short sale at four. The other declines the history entirely, regardless of age.

A property listed for sale. A property listed for sale, or listed within the past 60 days, is ineligible in some states. That matters if the plan is to sell the old house as part of the build.

State availability. HELOC placements run through 16 full-service states. That is narrower than Lendmire’s DSCR footprint of 41 markets, including Washington, D.C.

What Happens When the House Is Finished?

The HELOC is short-term fuel, not the final loan. When the house is done, one of three things usually happens. You sell and repay the line, refinance the house into long-term financing, or pay the line down from other cash.

For a build meant as a rental, the finished property can move into DSCR financing. A DSCR loan is reviewed primarily on property-level rental income covering the payment, subject to lender guidelines. The complete DSCR loans guide walks through the full mechanics. The ranges below are typical across the network, not guarantees:

• Purchase leverage mostly lands at 75% to 80% LTV.
• Cash-out refinance tops out around 75% LTV, with about six months of seasoning as the common expectation.
• Coverage of 1.00 is where select programs start. A separate select-lender path goes below 1.00, with leverage and terms adjusted.
• Credit of around 660 suits most programs, with 700 and up opening the strongest tiers.
• Reserves commonly run about six months of PITIA, depending on loan size, leverage, and transaction type.

Clearing 1.00 does not mean positive cash flow. Repairs, vacancy, management, utilities, and capital expenses sit outside the DSCR calculation. Whether a brand-new property qualifies at a given leverage depends on lender guidelines and file review. Barndominiums, log homes, and manufactured homes are not offered in these DSCR programs, so a build in one of those styles needs a different exit.

Think of it as sequencing. Short-term money builds the asset, and long-term financing holds it once the property is stabilized. Lendmire’s article Banks That Offer an Investment Property HELOC for Refinancing a Balance Into a New HELOC covers the rollover case.

What Should You Ask Before You Apply?

Use this checklist before you spend time on a line.

• Is the collateral an existing, completed property I own personally or in a revocable trust?
• What is my CLTV today, and what ceiling applies to my occupancy and credit tier?
• Does the draw structure give me enough runway to finish the build?
• Can I carry interest on most of the line before the house produces rent?
• What is my exit: sale, refinance, or paydown?
• Does the finished property fit a takeout program, and at what leverage?

If any answer is a no, a construction loan or a construction-to-permanent loan may fit better. The sign to stop is simple: the line cannot cover the full project cost, or the takeout is vague.

Key Terms Defined

HELOC: A revolving line of credit secured by a property you already own, with a draw period followed by a repayment period.

CLTV: Combined loan-to-value, which adds your existing mortgage and the new line, then divides by the property’s value.

Draw period: The stretch when you can borrow from the line, usually paying interest only.

Takeout: The loan or sale that pays off short-term financing when a project is finished.

DSCR: Debt service coverage ratio, which compares a property’s rent to its monthly principal, interest, taxes, insurance, and any HOA dues.

Seasoning: The waiting period a lender wants between events, such as owning a property before a cash-out refinance.

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. Lendmire is a mortgage broker that places files with select wholesale lenders, so it matches your scenario to the program rather than steering you to one bank. Plan the exit before you plan the line, because a HELOC never converts into a permanent mortgage on the new house.

About Lendmire

As a mortgage broker (NMLS# 2371349), Lendmire helps homeowners and real estate investors in its 16 full-service states open home equity lines of credit arranged through wholesale lenders. Lendmire is never the lender; line amounts, ceilings and terms are set by the lender under its guidelines. Scotsman Guide named Lendmire a Top Mortgage Workplace in both 2025 and 2026.

References

1. CFPB’s HELOC overview

2. CFPB – What You Should Know About Home Equity Lines of Credit