Ed Neuhaus 
About 1 in 5 homes listed in the Hill Country west of Austin has at least one non-standard utility, whether that’s solar panels on the roof, a private well in the yard, or a septic system handling wastewater. According to the Texas Commission on Environmental Quality, the state has over 2 million on-site sewage facilities and the number grows every year as development pushes further from city infrastructure. Solar installations in Texas grew 22% year-over-year through 2025, so that rooftop array you keep seeing on listings isn’t going away.
So here’s the thing. None of these are deal-breakers. But each one changes how you evaluate the property, what your lender will require, and where your negotiation leverage sits. I’ve walked buyers through all three over the last 19 years, and the ones who do their homework during the option period are the ones who close confidently. The ones who don’t? They either overpay for problems they didn’t know about or panic and walk away from perfectly good houses.
Lets break it all down.
Solar Panels: The Billion-Dollar Question Is Who Owns Them
This is the single most important thing I tell buyers looking at a property with solar panels in Texas. Before you even think about energy savings or roof condition or buyback rates, you need to answer one question: are the panels owned or leased?
The answer changes everything.
Owned Solar Panels (the Good Scenario)
If the seller owns the panels outright (paid cash or paid off a solar loan), you’re inheriting an asset. A Zillow study found that homes with owned solar panels sell for about 4.1% more than comparable homes without them. On a $350,000 Texas home, that’s roughly $14,350 in added value. The National Renewable Energy Laboratory put the Texas premium even higher at 6.7%.
And here’s a detail that makes Texas particularly friendly for buying a home with solar panels. Under TX Tax Code Section 11.27, you get a 100% property tax exemption on the added home value from the solar installation. So the panels make your home worth more, but your tax bill doesn’t go up. Not bad right.
With owned panels, the transfer is straightforward. The system conveys with the property like any other fixture. Your lender treats it like a new roof or upgraded HVAC. The title company just needs to confirm there’s no outstanding UCC-1 filing (more on that in a second) and you’re clear to close.
Leased Solar Panels (the Complicated Scenario)
Now here’s where it gets tricky. If the seller is leasing the panels through a solar company or has a Power Purchase Agreement, those panels don’t belong to the seller. They belong to the leasing company. And when you buy the house, you’re being asked to assume that lease.
Solar leases typically run 20-25 years at $100-$250 per month. The leasing company files a UCC-1 fixture filing, which is essentially a lien that shows up on the title search. Your title company will flag it. Your lender will want to review it. And some buyers, understandably, don’t want to inherit a 20-year payment obligation on equipment they didn’t choose.
I had a deal in Dripping Springs last year where the solar lease almost killed the transaction. The buyer’s lender wouldn’t approve the loan until the leasing company confirmed the lease was assumable and provided updated payoff terms. That process took three weeks. We had to extend the option period twice. (Not the end of the world, but also not how you want to spend your option period right.)
The TREC form you’ll need is the Addendum Regarding Fixture Leases (TXR 1954 or TREC 52-0). This lets buyer and seller negotiate whether the lease transfers, whether the panels stay, or whether the seller pays to have them removed. And yes, removal is an option, but it’s not cheap and the roof underneath will need attention.
One more wrinkle for 2026: Texas passed the Residential Solar Retailer Regulatory Act (SB 1036) which added new disclosure requirements for solar sales. Parts took effect September 2025, with more phasing in through 2026. If the seller signed their lease before these protections existed, the contract terms might be less buyer-friendly than you’d expect.
Solar and Your Lender
Lender requirements depend entirely on ownership:
Owned panels: No issues. Lender treats them like any other home improvement. Make sure the seller provides warranty documentation and inverter specs so you know what you’re inheriting.
Leased panels: Lender will review the lease agreement. They’re looking for two things. First, that the lease payment doesn’t push your debt-to-income ratio past their threshold. Second, that the UCC-1 filing doesn’t create a subordination problem with their mortgage lien. Some lenders won’t touch it. FHA and VA loans can be particularly strict about solar lease transfers in Texas.
Solar Buyback and Net Metering in Texas
Texas does not have a statewide net metering law. That’s important to understand because it means the value of excess solar energy you send back to the grid depends entirely on your Retail Electricity Provider.
About 85% of Texas is in the deregulated market, which means you can shop for a solar buyback plan. Rates range from 3 cents to 12 cents per kWh depending on the provider. Green Mountain offers full retail credit up to your usage. Chariot pays a fixed 8-10 cents per kWh with no cap. Wholesale plans from TXU and others typically land around 5-7 cents per kWh.
If the property is in a regulated area (parts of the Hill Country served by cooperatives like Pedernales Electric), you’re locked into whatever buyback rate your local utility offers. Ask the seller for 12 months of electric bills so you can see the actual economics, not the projections from the solar company’s sales pitch.
Insurance Implications
Don’t forget to call your insurance agent before closing. Solar panels need to be listed on your homeowners insurance policy. Most insurers add a modest premium increase of 1-2% to cover the replacement cost. If the panels are leased, the leasing company may require you to carry specific coverage amounts. Get this sorted during your option period, not the week before closing.
Well Water: What Your Lender Wants and What You Should Actually Test For
I wrote a deep-dive guide on Hill Country wells and septic systems that covers the infrastructure side in detail. But lets talk specifically about what matters during your buying decision.
If you’re looking at property in Wimberley, rural Dripping Springs, Spicewood, or most of the unincorporated Hill Country, you’re almost certainly looking at a private well. This is normal. Plenty of families have lived on well water out here for decades without a single issue. But your lender has requirements, and you should have your own standards on top of those.
The Flow Test (Non-Negotiable)
A four-hour sustained flow test measures output in gallons per minute. Your lender’s minimum is typically 1 GPM. But I’d tell you that 1 GPM is survival mode, not comfortable living. A family of four running laundry, dishwasher, showers, and maybe some landscaping needs 3-5 GPM to avoid rationing.
I’ve had the flow test kill deals before. A buyer fell in love with a place outside Wimberley. Five acres, spring-fed creek, the whole Hill Country dream. Flow test came back at 0.4 GPM. That’s a hard no from any lender and an even harder reality for daily life. We walked away. It was the right call, even though nobody was happy about it.
Cost: $300-$600. Worth every dollar.
Water Quality Testing
The flow test tells you how much water you have. A lab test tells you what’s in it.
The Hill Country sits on karst limestone aquifers (Edwards and Trinity), which means water moves through fractures in rock, not through filtering soil layers. That’s why testing matters more here than in most places. The Texas Water Development Board recommends testing annually, and you should absolutely test before buying.
Your comprehensive panel should include: total coliform and E. coli bacteria, nitrates and nitrites from agricultural runoff and nearby septic systems, arsenic (the Hill Country has known elevated levels in some areas), total dissolved solids, pH, hardness, iron, manganese, and lead. An accredited lab test runs $100-$300 depending on the panel.
Most problems are fixable with treatment systems like water softeners, UV sterilization, or reverse osmosis. But you want to know the cost of those fixes before you close, not after.
Groundwater Conservation Districts
Every well in the Hill Country falls under a Groundwater Conservation District. In our area that’s typically the Hill Country Underground Water Conservation District or the Hays Trinity GCD. These districts regulate well drilling permits, spacing requirements, and sometimes pumping rates. The rules differ by district and they change. Before you buy, check which GCD covers the property and whether there are any restrictions that would affect your usage or your ability to drill a new well if needed.
Benjamin Graham’s whole concept of margin of safety applies perfectly here. You’re not just buying the house. You’re buying the water underneath it. Test it, measure it, and know what you have before you commit.
Well Water and Your Lender
Most lenders require a satisfactory well inspection as a condition of financing. That means flow rate meeting their minimum (usually 1 GPM), water quality within safe drinking limits particularly for bacteria and nitrates, and a physical inspection of the wellhead and pressure system. If any of these fail, you’re negotiating repairs with the seller or walking away. This is exactly the kind of issue where having an agent who’s handled well water home inspections in Texas before makes a real difference. I’ve negotiated well rehabilitation, water treatment system installations, and price reductions all based on well test results.
Septic Systems: Conventional, Aerobic, and the Costs Nobody Mentions
Like wells, septic systems are standard outside city utility service areas. I covered the technical differences between conventional and aerobic systems here, but lets focus on what you need to know as a buyer making a purchasing decision.
Two Types, Very Different Ownership Costs
Conventional septic uses gravity to move wastewater through a tank and into a drain field where soil filters it naturally. Simpler, fewer moving parts, lower maintenance. Pumping runs $300-$500 every 3-5 years. That’s basically it.
Aerobic treatment units inject air into the treatment process and spray the treated effluent across the yard through spray heads. You’ve probably seen those little nozzles scattered around the lawn if you’ve been touring homes in rural Dripping Springs or Bee Cave. They’re required in many Hays County areas because the rocky Hill Country terrain won’t support conventional drain fields.
The critical difference for buyers: Texas state law requires an annual maintenance contract on aerobic systems. It’s not optional. TCEQ regulates these as On-Site Sewage Facilities, and maintenance reporting goes to the permitting authority. Budget $200-$500 per year for that contract, plus repair costs when components inevitably need attention.
The Septic Inspection (Separate from Your Home Inspection)
Your general home inspector is not going to give you what you need on the septic system. You need a licensed septic inspector who will pump the tank, check baffles, evaluate the drain field or spray system, test the control panel and air pump on aerobic systems, and verify the system’s capacity rating.
That last point matters more than most buyers realize. Septic system capacity is tied to the number of bedrooms in the home, not square footage. A 3-bedroom rated system serving a 4-bedroom house is out of compliance. And if you’re thinking about adding a bedroom or building an ADU later, the existing septic capacity is the first constraint you’ll hit. A system upgrade or expansion can run $15,000-$40,000 depending on terrain and system type. That’s a number you want in your head before you make an offer, not six months after you close when you’re talking to a contractor about that guest suite.
Inspection cost: $300-$600, which includes pumping the tank as part of the process.
Septic System and Your Lender
A failed septic system is a hard stop for most lenders. They will not close until the system is repaired or replaced. This is actually good negotiation leverage for you as a buyer. If the inspection reveals problems (and in the Hill Country, aging aerobic systems frequently have issues), you’re in a strong position to negotiate seller concessions or a price reduction.
I had a deal last year where the aerobic system needed a new air pump and two spray heads. Total repair cost was about $2,800. But because the lender flagged it as a closing condition, we had full leverage to make it a seller expense. The seller agreed within a day because they knew the alternative was us walking and the next buyer finding the same problem.
Negotiation Leverage: Using What You Find
So lets talk strategy for a second. Every issue uncovered during your inspections, whether it’s a leased solar panel with unfavorable terms, a well with marginal flow, or a septic system that needs work, is information. And information is leverage.
In this market? Buyers in Austin and the Hill Country have more negotiating power than they’ve had in years. When I find issues during the option period, I’m not looking to kill the deal. I’m looking to get you the right price for the reality of what you’re buying.
Here’s what I typically see work:
Solar lease issues: Ask the seller to buy out the lease before closing if the remaining balance is manageable. Or negotiate a price reduction equal to the net present value of the remaining lease payments. Some sellers will agree to the buyout if it’s the difference between closing and losing the deal.
Well problems: If flow is marginal but above lender minimums, negotiate a water treatment system or well rehabilitation as part of the deal. If flow is below minimums, you’re probably walking unless the seller agrees to drill a new well. Rare, but I’ve seen it happen on properties that had been sitting.
Septic repairs: These are the easiest to negotiate because they’re lender-required. Failed components are the seller’s problem. Period. Don’t let anyone tell you otherwise.
Charlie Munger had this line I think about a lot. “All I want to know is where I’m going to die, so I’ll never go there.” Same idea with buying a home that has non-standard utilities. Know where the problems are, and you can avoid them or price them in. Either way you’re making an informed decision.
The 2026 Solar Tax Credit Reality Check
I need to mention this because it’s going to come up on every solar conversation this year. Under the current legislation, the federal 30% Investment Tax Credit for residential solar effectively ends after 2025. If you’re buying a home with owned panels in 2026, the seller already captured that credit. You don’t get to claim it again.
But here’s the weird part. Third-party owned systems (leases and PPAs) may still qualify for the commercial Section 48E credit. So the solar companies can still offer “no money down” lease deals because they’re capturing the tax benefit on their end. This creates a situation where leasing becomes relatively more attractive in 2026, even though I’d still argue ownership is better long-term for most homeowners.
If the seller installed solar in 2025 or earlier and captured the 30% credit, those panels paid for themselves faster than any system installed in 2026 will. That’s actually a selling point for existing solar homes right now.
Frequently Asked Questions
The Bottom Line
Buying a home with solar panels, a well, or a septic system in Texas is not unusual. It’s not scary. But it does require more homework than buying a house on city utilities in a suburban subdivision. The buyers who do that homework during the option period close with confidence. The ones who skip it end up surprised.
And in a market where buyers have real leverage, everything you find during inspections is a data point you can use. That’s not a problem. That’s an advantage.
Considering a property with solar, well, or septic? Lets talk. I’ve walked dozens of buyers through these exact scenarios in the Hill Country, and I’ll make sure you know exactly what you’re getting into before you sign anything. No surprises.
