Second Mortgages and Home Equity Lines
A fixed second lien or a revolving line of credit, without touching the first mortgage you already have. How the two differ, and the Texas homestead rules that change the answer entirely.
Most people asking about a second mortgage in the last few years are asking for one reason: they have a first mortgage at a rate they are not willing to give up, and they need money out of the house anyway.
A cash-out refinance replaces that first mortgage. A second mortgage leaves it exactly where it is and adds a separate loan behind it. When the rate on the first is well below what is available today, that difference is the whole decision.
The two shapes this takes
A closed-end second mortgage. A lump sum, a fixed rate, a fixed term, and a payment that does not move. You borrow once. It behaves like a normal mortgage that happens to sit in second position.
A home equity line of credit. A revolving line you draw against as needed during a draw period, repay, and draw again. The rate is variable in most programs, which means the payment can rise. You pay interest on what you have actually drawn rather than on the full line.
Which one fits comes down to a question about the money, not about the loan: do you need a known amount once, or an unknown amount over time?
A kitchen renovation with a signed contract is a lump sum — take the fixed second and know the payment. Tuition across four years, a business with uneven cash needs, or a renovation you expect to run over is a line of credit. Taking a fixed second and then needing more money six months later is an expensive way to discover this.
The trade is that the fixed second gives you certainty and the line gives you flexibility, and in most markets you pay for whichever one you take.
Second mortgage or cash-out refinance
Worth running both, because the answer flips on one number.
A second usually wins when your first mortgage rate is meaningfully below current rates. Refinancing to pull out equity means repricing your entire balance at today's rate — sometimes hundreds of thousands of dollars repriced to get at a much smaller amount of cash. The second leaves the cheap money alone.
A cash-out refinance usually wins when your first mortgage rate is at or above current rates, when you want one payment instead of two, or when you are pulling enough that second-lien pricing stops being attractive.
We price both and show them side by side. If the refinance wins, we will say so — see refinancing for how that side works.
What lenders look at
Second liens are underwritten more conservatively than firsts, because in a foreclosure the first mortgage gets paid before the second sees anything.
- Combined loan-to-value is the number that matters — your first mortgage balance plus the new second, against the home's value. Not the second alone.
- Credit requirements generally run tighter than for a first mortgage.
- Income and debt-to-income count the new payment, and for a line of credit, lenders typically qualify you on a fully drawn balance rather than what you intend to use.
- The property type matters more than it does on a first. Investment property and second homes are harder, and some lenders will not do them at all in second position.
These vary a great deal between lenders, which is the reason to run a file past more than one.
Texas is genuinely different, and it is not a small difference
If your home is in Texas, home equity lending is governed by the Texas Constitution, not by ordinary lending rules. Texas wrote borrower protections into its founding document and they are strict:
- You cannot borrow past 80% of the home's value, counting every lien against it. Not 80% on the new loan — 80% on everything combined. In most other states you can go higher.
- The loan cannot close before the twelfth day after you apply or receive the required notice, whichever is later. There is no rushing this, and any lender promising you a Texas home equity closing in a few days is describing something that cannot legally happen.
- One per homestead per year. You cannot take another within twelve months of the last one.
- It has to close at a lender's office, an attorney's office, or a title company. Not at your kitchen table.
- It is non-recourse absent actual fraud, and foreclosure requires a court order.
- Lines of credit are allowed, with their own rules — a floor on the size of any single draw, and no accessing the line by credit card, debit card, or unsolicited checks.
If a lender gets any of this wrong, the penalty falls on the lender, not you — an uncured violation costs them all principal and interest. That is why Texas home equity files are handled carefully by people who do them regularly, and why it is worth asking whether the lender you are talking to actually does.
What we will tell you honestly
Sometimes the answer is not to borrow against the house at all. A second mortgage puts your home behind a debt that may be for something that would be better financed another way, or not financed at all.
We will tell you when we think that is the case, and we would rather have that conversation than write the loan.
FAQ
What is the difference between a second mortgage and a HELOC? A closed-end second mortgage is a one-time lump sum at a fixed rate with a fixed payment. A home equity line of credit is revolving — you draw, repay and draw again during a draw period, usually at a variable rate, paying interest only on what you have drawn.
Should I take a second mortgage or do a cash-out refinance? It usually turns on your existing first mortgage rate. If it is well below today's rates, a second leaves that cheap money alone instead of repricing your whole balance. If your first is at or above current rates, a cash-out refinance often wins. Run both before choosing.
How much can I borrow with a second mortgage? It depends on your combined loan-to-value — first mortgage balance plus the new loan against the home's value — along with credit, income and property type. In Texas, the constitution caps the combined total at 80% of the home's value.
Can I get a home equity loan in Texas? Yes, under Article XVI, Section 50 of the Texas Constitution, with real restrictions: 80% combined loan-to-value across all liens, no closing before the twelfth day after application or required notice, one per homestead in any twelve months, and closing only at a lender's office, an attorney's office, or a title company.
Why does Texas take longer? Because the waiting period is constitutional, not a lender's processing time. A Texas home equity loan cannot close before the twelfth day after you apply or receive the required notice. Nobody can shorten it.
Does a second mortgage require an appraisal? Usually, though some programs accept alternative valuations depending on loan size and combined loan-to-value. It varies by lender.
Can I get a second mortgage on a rental property? Sometimes. Second liens on investment property are harder than on a primary residence, and many lenders will not do them at all. It is worth asking rather than assuming either way.
Sources
- Texas Constitution art. XVI §50 — Homestead, home equity lending retrieved 2026-09-25
This page is educational and is not a commitment to lend, a rate quote, an approval, or a qualification decision. All loans are subject to a complete application, verified information, property eligibility and underwriting review.
A second mortgage and a home equity line of credit are secured by your home. If you do not repay as agreed, you can lose it.
A home equity line of credit carries a variable rate in most programs, which means the payment can rise. Terms, draw periods and repayment periods are set by individual lenders and vary.
Texas home equity rules described here are those in Article XVI, Section 50 of the Texas Constitution, retrieved September 25, 2026. Texas homestead lending is governed by constitutional provisions that change by amendment — verify current requirements before relying on them.