The Quick Read: Usually yes. You can open a home equity line behind the loan you took out to buy the home, and that first mortgage stays untouched, as long as it is not itself an earlier Texas equity-style loan and the combined debt on the home stays at or under 80% of its value. A few conditions decide whether it works for you:
- The line sits in second position, so your first mortgage and its payment do not change.
- The state allows only one home-equity-type loan on a homestead at a time. A prior cash-out refinance or home equity loan can block a new line.
- Combined debt on the home caps at 80% of value, so you keep at least 20% equity.
- A homestead line cannot be secured by a rental or second home. Investors who want rental-property equity need a different product.
Here is the investor catch. A line that funds a down payment can leave the next rental looking fine on paper while your real cash flow gets thinner.
How large a line the equity supports in Texas.
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 80% 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.
Key Terms Defined
You will see these terms throughout, so here they are once, in plain words.
- HELOC: a revolving line of credit secured by your home. You draw what you need, up to a limit.
- Homestead: the home you live in as your primary residence. Texas gives it special protections, and with them come special borrowing rules.
- Texas home-equity loan: any cash-out refinance, fixed home equity loan, or HELOC on a homestead. Texas treats all three as one family with shared rules.
- First mortgage (first lien): the loan with first claim on the property. A purchase-money loan is the one you used to buy the home.
- CLTV (combined loan-to-value): all loans secured by the property, added together, divided by its value.
- Draw period: the stretch when you can borrow from the line and pay interest only. Repayment follows, and it amortizes, meaning you pay down principal.
- DSCR (debt service coverage ratio): a rental property’s monthly rent divided by its monthly obligation. That obligation is principal, interest, taxes, insurance, and any association dues (PITIA).
Does the Low Mortgage Really Stay Put?
Yes. A HELOC is a separate loan. It does not replace, modify, or reprice your first mortgage.
Picture a homeowner with a long-held first mortgage who needs cash. A cash-out refinance would swap the old loan for a new one on the whole balance. A line added behind it leaves the old loan alone and borrows only the extra amount.
That is why this route appeals to people who locked in a low first mortgage. You pay the cost of new borrowing only on the new money.
The home does carry more risk, though. Your house secures both loans, and the line’s pricing floats. Across the wholesale network Lendmire places these files through, pricing on a line floats through both the draw and the repayment period. It never converts to fixed.
The One Check That Can Break It
Before you apply, find out what kind of loan your first mortgage is.
Texas lets a homestead carry only one home-equity-type loan at a time. Lawyers call these Section 50(a)(6) loans. That label covers cash-out refinances, fixed home equity loans, and HELOCs. Texas A&M’s Real Estate Research Center explains that all three fall under the same constitutional rules.
So the test is simple:
- Your first mortgage is the original purchase loan. There is room for a line behind it.
- Your first mortgage came from a cash-out refinance or a home equity loan. It is already your one slot. A HELOC generally cannot go behind it.
Many owners with a low first mortgage did refinance at some point, so do not assume. Look at your closing paperwork or ask your title company. If the existing loan is an equity-style loan, the route is usually to refinance that loan, not to stack a line on it.
Across the network, Texas homestead files also carry a 12-month seasoning requirement. That is the waiting period after a prior equity-style loan, and it matters if your current mortgage is a recent refinance.
How Much Line Can You Actually Get?
Take 80% of your home’s value, then subtract what you owe on the first mortgage. That is your ceiling.
The 80% limit is a state rule, not a lender choice. Texas A&M’s research center confirms that new principal plus all other debt secured by the home cannot exceed 80% of fair market value when credit is extended.
The State Bar of Texas walks through the same math. A home with a first mortgage equal to 30% of its value leaves room to borrow up to 50% of the value. That is the 80% ceiling minus the 30% already owed.
Value is measured when the line closes. If your home appreciates later, your existing line does not grow.
Lenders then apply their own tiers inside that 80% ceiling. On a Texas homestead, the network’s primary-residence table works like this:
- 640 or better: up to 80% CLTV, with lines up to $500,000.
- 620 to 639: up to 70% CLTV, with lines up to $400,000.
- 600 to 619: up to 60% CLTV, with lines up to $400,000.
- 700 or better: up to 75% CLTV on lines as large as $750,000.
Some higher-leverage tiers exist for primary residences elsewhere. They never apply to a Texas homestead, because the state cap holds them at 80%. These are typical ranges from select wholesale lenders, subject to lender guidelines and full file review.
A line above $500,000 is for primary residences only. It needs a credit profile of 700 or better (720 on the longer-runway 5-year draw structure described below). It also caps at 75% CLTV and requires a full appraisal.
What the Network Looks For on a Homestead Line
Most Texas homestead files are reviewed on a handful of points. Here is how they usually shake out across the programs Lendmire works with.
Credit. The floor is 600, and the model uses a single-bureau score keyed to the primary wage earner. Reports must be no more than 90 days old at closing.
Debt-to-income. The maximum is 50%, and 45% for scores from 600 to 679. A ratio above 45% needs a 680 minimum. The lender reviews your file on the interest-only payment calculated on the maximum draw, not on what you plan to borrow.
Structure. Two draw structures exist on primary residences. One is a 3-year interest-only draw followed by a 17-year repayment. The other is a 5-year draw followed by a 25-year repayment, which is the longer-runway option. At least 75% of the line is drawn at closing, so most of your borrowing starts costing interest on day one.
Draws after closing. Texas sets the minimum subsequent draw at $4,000, per the Texas Office of Consumer Credit Commissioner.
Valuation. Lines at or below $500,000 ordinarily run an automated valuation instead of a traditional appraisal. A higher CLTV may require a second valuation. You can also request a full appraisal.
Property. Single-family homes, 2-4 units, PUDs, townhomes, and condominiums (including non-warrantable) are eligible. Texas homesteads are limited to 10 acres. Manufactured homes, co-ops, condotels, log homes, and agricultural zoning are not eligible. A home listed for sale, or listed within the past 60 days, is also ineligible in Texas.
Title. The line must go on a home titled in your own name or in a revocable living trust. An LLC cannot hold title on these lines, subject to lender program eligibility.
The Waiting Periods and Signatures
Plan around three Texas rules that no lender can waive.
First, the loan cannot close before the 12th day after you receive the required notice of your rights. The State Bar of Texas describes this as a fixed waiting period. If a purchase contract has a hard deadline, build the line in well ahead of it.
Second, both spouses sign. Either spouse can cancel after closing under a right-of-rescission period, per the State Bar of Texas. Plan on the closing happening at an authorized location like a title company or attorney’s office.
Third, Texas caps lender fees on these loans at 2% and bars prepayment penalties, according to Texas A&M’s research center. Texas voters authorized HELOCs by constitutional amendment, and the Texas Legislative Council summarizes how that change shaped the line’s built-in limits. One of those limits stops further advances when the balance climbs too high relative to the home’s value when the line opened.
One more fact matters to risk. These loans are non-recourse, which means the lender generally looks to the home, not to your other assets, if you default.
Line, Fixed Loan, or Refinance? A Side-by-Side
Not every owner who wants equity should use a line. Here is how the three Texas options differ.
| Factor | Keep Mortgage + HELOC | Cash-Out Refinance | Fixed Equity Loan |
|---|---|---|---|
| Your first mortgage | Stays as is | Replaced | Stays as is |
| Payment behavior | Floats, interest-only draw | New loan on full balance | Fixed, amortizing |
| Uses your one slot? | Yes | Yes | Yes |
| Can pair with a HELOC? | n/a | No | No |
| Best fit | Low first mortgage, flexible need | Old mortgage is not worth keeping | One lump sum, steady payment |
The HELOC and the fixed equity loan cannot coexist on the same homestead. Opening one uses the single slot.
When Keeping the Low Mortgage Wins (and When It Doesn’t)
Keeping the first mortgage wins when its cost is clearly below what a new loan on the whole balance would carry. It also wins when you need only a slice of your equity. The bigger your first balance relative to the new money, the more you save by leaving it alone.
It loses in three situations. If your first mortgage is already a Texas equity-style loan, you cannot add the line at all. If you need most of the allowed equity, the line’s floating cost dominates and the savings shrink. And if your old mortgage is not meaningfully cheaper than a new one, you gain little by stacking a second loan.
Here is the break-even method. Take your first mortgage’s cost on its balance, add the line’s cost on the amount you draw, and compare the total against a single new loan on the combined balance. Then stress-test the line. Ask what happens to your budget if the line’s pricing climbs materially.
The call is a close one for many owners. The low first mortgage has real value, but a floating second loan can erode that value if you borrow heavily and the market turns. A modest draw behind a cheap first mortgage tends to be the cleaner structure.
The Investor Angle: Funding the Next Rental From Homestead Equity
Investors use this move to build a down payment without touching a cheap first mortgage. It can work, with a few things to understand.
Down payment funds. On a DSCR purchase, most files land at 75% to 80% LTV, which means 20% to 25% down. Select high-leverage programs reach 85% LTV with roughly a 700+ score. Whether a lender accepts borrowed down-payment funds is that lender’s rule, so confirm before you draw.
What DSCR measures. DSCR compares the new rental’s rent to its own PITIA. Your homestead line’s payment does not enter that ratio. The ratio can look healthy while your real cash flow gets thinner. Clearing 1.00 is also not the same as positive cash flow. Repairs, vacancy, management, utilities, and capital expenses sit outside the calculation.
Coverage floors. 1.00 is where many select programs start. A separate select-lender path takes coverage below 1.00, with leverage and terms adjusted. Stronger ratios open better pricing and higher leverage. You can see how the pieces fit in Lendmire’s complete DSCR loans guide.
Your own debts. The line’s payment counts in your personal debts if you later apply for a loan that reviews them. Programs that qualify primarily on property-level rental income covering the payment, subject to lender guidelines, ask less about this.
Can the line sit on the rental instead? Not under the homestead rules. Texas A&M’s research center says these loans cannot be secured by a rental or second home. A rental line is a different product with different limits. On the network, an investment-property HELOC requires a 700 score and caps at 70% CLTV, with a maximum line of $500,000. It runs the 5-year draw, 25-year repayment structure only. Texas treats rentals as non-homestead, so the homestead waiting period and one-lien rule do not apply there.
If your rental sits in an LLC, the line cannot go on it. The property needs a vesting change, or a DSCR cash-out refinance is the better route. Cash-out refinances on standard rentals top out around 75% LTV across most of the network, and about 6 months of seasoning is a common expectation. Each figure is subject to lender guidelines and a complete review of property type, leverage, and credit.
Lendmire’s article Can You Keep a Low First Mortgage and Add a Rental HELOC on Your Old Home? covers the non-homestead version of this move.
Tax treatment can depend on how the funds are used and how the property is held. Keep clear records and speak with a qualified tax professional before relying on any deduction.
Who Should Skip It
Skip the line if your current first mortgage is a cash-out refinance or equity loan. Skip it if you would use close to the full 80% ceiling. Skip it if a rate move would strain your budget, because the pricing floats. Skip it if the money funds a rental whose margin is already thin.
It also fits poorly for anyone who wants most of the money later. With at least 75% drawn at closing, an unused line is not the low-cost standby it sounds like.
Frequently Asked Questions
Can I have a HELOC and a home equity loan on my Texas homestead at the same time?
No. Both are Texas home-equity loans, and the state allows only one on a homestead at a time. Picking a line uses the slot, so a fixed equity loan later means paying the line off first and waiting out the seasoning period.
Does adding a HELOC change my first mortgage?
No. The line is a separate loan in second position, and your first mortgage keeps its balance and terms. The only change is that your home now secures both loans, and combined debt must stay within the 80% ceiling.
Can I use the HELOC to buy a rental?
Often yes, subject to the purchase lender’s rules on borrowed down-payment funds. The line is secured by your home, so the home carries the risk if the rental struggles. The rental is then reviewed on its own rent against its own PITIA.
Is the minimum draw different in Texas?
Yes. After closing, Texas sets the minimum subsequent draw at $4,000. Many other states set lower minimums.
What if my property is in an LLC?
An LLC cannot hold title on a home-equity line. The property would need to be re-titled to you or a revocable living trust. Otherwise, a DSCR cash-out refinance is the more natural route, subject to lender program eligibility.
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 arranges these loans through select lenders in its wholesale network. Every figure here is subject to lender guidelines and full file review, and nothing here is a commitment to lend.
About Lendmire
Lendmire — NMLS# 2371349 — is a mortgage broker that arranges home equity lines of credit in its 16 full-service states through wholesale lenders, on primary residences, second homes and investment properties. Every line 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. Texas A&M Real Estate Research Center: What to Know About Home Equity Loans in Texas
2. State Bar of Texas: Home Equity Loan Client Page
3. Texas Office of Consumer Credit Commissioner: Home Equity Guidance
4. Texas Legislative Council: Home Equity Facts at a Glance
This article is part of Lendmire’s home equity line of credit program — full qualification details, guidelines, and scenarios live on the program page.
Related reading: How a Growing Rental Portfolio Gets a Same-Bank Second Lien · How Much a Super Jumbo DSCR Cash-Out Releases for a Founder Post-Sale · Does Line Size Determine Whether a HELOC or Home Equity Agreement Wins?
Brandon Miller
Founder & CEO, Mortgage Loan Originator, Lendmire LLC
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Important disclosures. Lendmire (NMLS# 2371349) is a licensed mortgage brokerage. Lendmire is not a direct lender, depository institution, or financial advisor. All loan inquiries are subject to lender underwriting; this article does not constitute a commitment to lend. Rates, terms, and program guidelines are subject to change without notice and vary by borrower profile, property type, and state. Information in this article is general in nature and is not financial, legal, or tax advice. Equal Housing Opportunity. NMLS Consumer Access: nmlsconsumeraccess.org.