What should you know before buying a Flower Mound home with a pool?

Flower Mound had 143 homes with a pool listed as of September 5, 2026, at a median list price of $725,000, and the entry point sits near $415,000. Budget $1,400 to $3,000 a year for routine care before repairs. The part most buyers miss: under Texas rules the pool is an optional system, so a standard home inspection does not have to include it, and even when your inspector does look at it, shell and underground leaks are explicitly outside the standard.

Here's the sentence I say most often when a buyer asks me about a pool home: the pool is not the expensive part. The unknown under the pool is.

You can price a pool. Builders publish their numbers. What you cannot price from a listing photo is whether the shell is holding water, whether the equipment pad is three years old or thirteen, and whether the fence around it meets the code the Town of Flower Mound actually enforces. Those three answers move the number by tens of thousands of dollars, and none of them come standard with the inspection you're already paying for.

What a pool home costs in Flower Mound right now

Start with inventory. On September 5, 2026, Redfin showed 143 homes with a pool for sale in Flower Mound at a median list price of $725,000. Citywide, Redfin listed the Flower Mound median at $759,000 the same day.

Read that carefully, because it is a trap. The pool subset came in about $34,000 below the citywide median, and that does not mean pools reduce value. It means the two groups are different houses. Median list price is a snapshot of what happens to be for sale, not a measure of what a pool contributes to any particular home.

The filter itself needs a caveat. Redfin's own page describes the search as returning "houses with pools, spas and community pools," so a home whose only pool is the neighborhood amenity lands in the same list as a home with gunite in the backyard. In one session the same URL also reported 143 homes in one place and 267 in another, and the Flower Mound results included Argyle, Roanoke, and Northlake addresses. Flower Mound proper is 75022 and 75028. If a result's ZIP is 76226 or 76262, that's a different town's tax bill and a different set of comps. A portal filter is a marketing convenience, not a data field.

What the actual Flower Mound listings looked like that day:

• $415,000 ... 3 bed, 1,508 sq ft, 75028
• $550,000 ... 4 bed, 2,469 sq ft, 75028
• $699,000 ... 4 bed, 3,029 sq ft, 75022
• $1,050,000 ... 5 bed, 3,296 sq ft on just over an acre, refinished pool and upgraded equipment
• $1,600,000 ... 5 bed, 5,067 sq ft on a one-acre creek lot
• $7,200,000 ... 6 bed, 10,189 sq ft, the top of the market

So a pool is available at essentially every price band in town, from the low $400s up. It is not a luxury-tier feature here the way it is in colder markets, though at the million-dollar price point a resort-style backyard is closer to an expectation than an upgrade.

Building one, for comparison

Local builders put a custom inground pool at $50,000 to $150,000, with a standard 12x24 running roughly $54,000 to $84,000. DFW pricing runs 20 to 30 percent above national averages, and the reason is under your feet: expansive clay soil requires extra engineering here. Off-season builds are commonly quoted 15 to 25 percent cheaper.

Most appraisers and market studies put what a pool adds at resale well below what it cost to build. Buying one already in the ground is usually the cheaper path, which is exactly why the condition of the one you're buying matters so much.

What it costs to run

Ongoing ownership in North Texas, in round numbers:

• Weekly professional service: $120 to $300 per month
• Chemicals: $50 to $125 per month, sometimes billed separately from service
• Routine annual total: roughly $1,400 to $3,000
• All-in annual total including utilities, the insurance difference, and the property tax difference: commonly $3,500 to $8,000

Then the capital items, which are not annual but are not optional either:

• Replaster or resurface: $6,000 to $15,000 in DFW. Marcite plaster, the most common older surface here, has a 7 to 12 year life, and a complete replaster commonly lands at $6,000 to $8,000
• Pump replacement: $300 to $1,600 installed
• Heater replacement: $5,000 to $10,000 installed for gas or a heat pump

One detail on the equipment pad: variable-speed pumps are now the federal standard for new pool pumps, and they draw 60 to 70 percent less electricity than the old single-speed units. A single-speed pump means both a replacement in your near future and a higher electric bill until then.

The inspection Texas does not require

This is the part I most want you to take away.

Texas regulates what a licensed real estate inspector must do, in the TREC Standards of Practice. Swimming pools, spas, and hot tubs live in 22 Texas Administrative Code § 535.233, "Minimum Inspection Requirements for Optional Systems." Subsection (a) is one sentence: an inspector is not required to inspect the components or systems described under this section.

Optional. Not included. The general home inspection you're scheduling can lawfully skip your pool entirely, and many do unless you ask and pay for it.

If your inspector does agree, § 535.233(d)(1) sets a real floor. They must report the construction type, and report as deficient a single blockable main drain, missing bonding, missing or deficient safety barriers, above-ground leaks, missing or failing GFCI protection, and deficiencies in surfaces, tile and coping and decks, steps and handrails and diving boards, drains and skimmers and valves, filters and pumps and motors, lighting, and the heater.

That's a solid list. Here is what § 535.233(d)(2) says they are still not required to do:

• Determine the presence of pool shell or sub-surface leaks
• Determine the effectiveness of entrapment covers
• Operate valves
• Disassemble filters, or open any components or lines
• Uncover or excavate any lines or concealed components
• Fill the pool with water
• Inspect any system that has been winterized, shut down, or otherwise secured
• Determine the presence of sub-surface water tables
• Inspect ancillary equipment like automation controls, covers, or chemical dispensers

Look at what's on that list. A shell leak and a buried plumbing leak are the two most expensive things a pool can have wrong with it, and they are the two things the standard specifically does not ask anyone to find. A resurface runs five figures. A buried return line under a deck can run more once the concrete comes up.

Notice the last one too. If a seller has the pool winterized or the equipment shut off during your option period, a standards-compliant inspection of that pool is no inspection at all, and the report can say so without anyone having done anything wrong.

So order a separate pool inspection, from a pool inspector, in addition to your general inspection. Ask explicitly whether it includes pressure testing the plumbing lines and a leak-detection pass. That is the scope that answers the expensive question, and it is not what you get by default.

The seller's side matters too. The Texas Seller's Disclosure Notice asks about known problems with the pool, spa, hot tub, pool equipment, and pool heater, and specifically about a single blockable main drain, which is a suction entrapment hazard. But a disclosure is a statement of what the seller knows on the day they sign it. A seller who has never had a leak test done does not know whether the shell leaks, and can say so honestly.

Barriers, insurance, and the tax bill

Three things change the moment the pool is yours.

The barrier. Generic Texas pool content loves to quote the state's 48-inch fence rule, the self-closing and self-latching gate, and the 4-inch sphere gap. Those rules are real, but check where they live: 25 Texas Administrative Code § 265.192 sits in the chapter on public swimming pools and spas, governing Class A, B, and C pools plus pools at multiunit rental complexes and pools maintained by a property owners association under Health and Safety Code Chapter 757. A private pool in a single-family backyard is not what that rule regulates.

Your backyard is governed by the building code the Town of Flower Mound has adopted, derived from the International Residential Code and the International Swimming Pool and Spa Code, with its own barrier height, gap, gate, and latch requirements. The town requires a permit for any in-ground or above-ground pool more than 24 inches deep, and for hot tubs and spas, and it has separate fence requirements when your perimeter fence serves as the pool barrier. Call Flower Mound Building Inspections at 972.874.6355 and ask which code edition is currently adopted rather than assuming the state's public-pool numbers are your answer.

The practical version: if the pool went in without a permit, or the fence was replaced without one, you inherit the correction. That's an option-period question, not a post-closing surprise.

The insurance. Expect your carrier to want a fence and a self-latching gate, and expect a conversation about liability limits. The doctrine at work is attractive nuisance, which is why pool owners commonly carry $300,000 or $500,000 in liability or add an umbrella policy. A diving board or slide can raise your premium meaningfully, and with some carriers can make the home harder to insure at all. Get a real quote on the specific address during your option period. In a North Texas insurance market already handing out non-renewals and large increases, this is not a formality.

The tax bill. Denton CAD appraises what exists on January 1, and a permanent inground pool is a taxable improvement. Permits are public record, and appraisal districts pull permit data, including the scope and estimated cost, and use it to revalue. So a pool built this year shows up in next year's appraisal. General guidance puts the typical appraised addition in the $15,000 to $40,000 range, though yours will be specific to your property. If the number looks high relative to what pool homes on your street actually sell for, that is a protest worth filing. The same permit-to-appraisal mechanic drives how property taxes work your first year in a new build, and the Town's proposed FY 2026-2027 rate of $0.387277 per $100 is only its slice of a bill that also includes the county, the school district, and any special district.

What to do while your option period is running

Here is the list I give buyers, in order:

1. Order a dedicated pool inspection on top of the general one, and confirm in writing that it includes plumbing pressure testing and leak detection.
2. Ask when the pool was last resurfaced. If nobody knows and the plaster looks rough, price a $6,000 to $15,000 replaster into your offer.
3. Photograph the equipment pad and check manufacture dates on the pump, filter, and heater.
4. Verify the permit history with the town for both the pool and the fence.
5. Measure the barrier and check that the gate closes and latches on its own from a full open swing.
6. Ask about the main drain. A single blockable main drain is a disclosed hazard and a real remediation cost.
7. Get an actual insurance quote on the address, with the pool and any diving board or slide named.
8. Run the annual carrying cost into your monthly number.

Selling a Flower Mound home with a tired pool? The same list runs in reverse. A pool that inspects clean is an asset. A pool with an unknown history invites every buyer to price the worst case into their offer, which is almost always more than the repair would have cost you. Either fix it before you list, or price it honestly and sell as-is on purpose rather than by accident, and put it in your net proceeds math before you set a price.

Frequently Asked Questions

Does a home inspection in Texas include the swimming pool?

Not automatically. Pools sit in 22 Texas Administrative Code § 535.233, the Standards of Practice section for optional systems, and subsection (a) states that an inspector is not required to inspect them. Ask your inspector directly whether the pool is in scope, and plan on a separate pool inspection either way.

How much does a pool add to a home's value in Flower Mound?

There is no single percentage that answers this honestly. Contributory value is a paired-sales question that depends on your specific street, the pool's condition, and how common pools are nearby, and it is usually well below what the pool cost to build. Comparing the median list price of pool homes to the citywide median tells you nothing about it, since those are two different sets of houses.

What does it cost to maintain a pool in the Dallas-Fort Worth area?

Weekly professional service runs about $120 to $300 per month and chemicals add roughly $50 to $125 per month, putting routine annual maintenance around $1,400 to $3,000. Including higher electricity, insurance, and property taxes, all-in annual ownership commonly lands between $3,500 and $8,000, before any capital repairs.

Do Texas pool fence laws apply to my backyard pool?

The state rules people usually quote, 25 Texas Administrative Code § 265.192, govern public pools and spas, including those at multiunit rental complexes and those maintained by a property owners association. A private single-family backyard pool is governed instead by the building code the Town of Flower Mound has adopted, so verify the current requirements with Flower Mound Building Inspections rather than assuming the state's public-pool numbers apply.

Will a pool raise my property taxes in Denton County?

Yes. A permanent inground pool is a taxable improvement, and Denton CAD appraises what exists as of January 1 each year. Permit records are public and appraisal districts use them to identify and value new improvements, so a pool built this year typically appears in next year's appraisal. If the added value looks high compared to what pool homes near you actually sell for, that is grounds for a protest.

How much does it cost to build a pool in Flower Mound instead of buying one?

Custom inground pools in the Dallas-Fort Worth area generally run $50,000 to $150,000, with a standard 12x24 pool around $54,000 to $84,000. DFW pricing runs 20 to 30 percent above national averages largely because expansive clay soil requires additional engineering, and off-season construction is often quoted 15 to 25 percent below peak-summer pricing.

Buying the pool, not the picture

A pool in Flower Mound is available at almost any price point, and owning one is a real but knowable cost. What is not knowable from a listing is the condition of the shell and the plumbing, and Texas rules do not require anyone to find out for you. Order the separate inspection, verify the permits, get the insurance quote, and put the carrying cost into your monthly number before you write the offer. Do that and a pool home is straightforward. Skip it and you're buying a photograph.

If you're weighing a pool home as part of a bigger move, schedule a free Move-Up Strategy Call ... thirty minutes, no pitch, just a clear-headed look at where you are and what your best next move looks like.

This article is general information, not legal, tax, insurance, or lending advice. Code requirements, appraisal practice, and insurance underwriting change and vary by property. Verify your specific numbers with your agent, your inspector, your insurance agent, the Town of Flower Mound, and where appropriate a licensed Texas attorney.

About Brian White

Brian White helps families in Northwest DFW make their move-up cleanly, selling and buying in one synchronized step. He built BlueFuse Group on a simple standard: other-first service, proactive at every turn, faith and excellence in equal measure. Brian has been married to Tisha for 27 years and is dad to three adult sons. When he's not protecting a family's equity or untangling a tight closing timeline, you'll find him chasing a round of golf or at Valley Creek Church.

Schedule a Move-Up Strategy Call ... no pitch, just a clear-headed look at your next move.