Private community · Scottsdale
Desert Mountain: where the leaks are
Established in 1986 and still building today, Desert Mountain contains every generation of pipe laid in the Valley over the past four decades, on custom homes where no two lots are quite alike.
Desert Mountain is a private master-planned community in far north Scottsdale, established in 1986 and still building, which means the whole range of supply materials from mid-1980s copper to current PEX exists inside one community.
Desert Mountain was established in 1986, its first golf course opened the following year, and residential construction has continued ever since, with new villages being built into the 2020s. That is close to four decades of continuous building inside a single community.
It is the exact opposite of a tight-window community, and it deserves to be read that way. Where Terravita gives one dependable answer about what is under a slab, Desert Mountain gives none at all. Mid-1980s copper and current PEX both exist here, on custom homes built by many different hands, on lots that each had to solve their own terrain.

What plumbing does a Desert Mountain home have?
There is no single answer, because the community was established in 1986 and is still building: a house from early on is on mid-1980s copper, one built recently is on PEX, and everything in between exists as well.
That makes the property history the most valuable thing anyone can hand us. The year narrows the material. A known repipe or remodel narrows it further and flags a transition. And on custom homes, the original builder’s practice matters, because custom work varies far more than tract work does — routing, depth and fitting choices are decisions rather than defaults.
Related: slab leak detection and PEX and copper repiping.
| What we go on | In Desert Mountain |
|---|---|
| Build window | 1986 onward, still building |
| City or jurisdiction | Scottsdale, Arizona |
| Likely supply material | mid-1980s copper through to current PEX, depending entirely on the individual home |
| What tends to fail first | whatever that particular house and that particular decade are prone to |
| What we check first | the year and the history of the specific property, before any assumption is made |
How does Desert Mountain sit against Scottsdale’s housing?
It contains Scottsdale’s whole range inside itself, which is something almost no other community can say.
The city figure describes the middle of this community rather than the community itself. The American Community Survey puts Scottsdale’s median year of construction at 1990, four years after Desert Mountain was established and decades before its most recent homes.
| Housing across Scottsdale city, Arizona | Share |
|---|---|
| Median year built | 1990 |
| Built before 1980 | 29 percent |
| Built since 2000 | 26 percent |
Source: U.S. Census Bureau, American Community Survey 5-year estimates (2023). Geography: Census place.
Does a custom home change how you look for a leak?
It changes what we can assume, which in practice means it changes how much of the first visit is spent tracing rather than testing. Tract housing lets you predict where a line runs; a custom house does not.
In a tract neighbourhood, floor plans repeat, so the route of a supply line under one slab is a good guide to the next. On custom homes every route was decided individually, often around terrain that had to be worked with rather than levelled. Lines take the path the site allowed, at depths that vary, with bends that exist for reasons nobody wrote down.
So the sequence adjusts. Tracing the route comes earlier and matters more, listening equipment gets used to follow a line rather than to confirm a guess, and nothing gets opened until the route is established. It is a slower start and a much shorter finish.
Related: underground leak detection and acoustic leak detection.
Asked and answered
What do people in Desert Mountain ask us?
What kind of pipe is in a Desert Mountain home?
It depends entirely on the individual house. The community was established in 1986 and is still building, so mid-1980s copper and current PEX both exist inside it, along with everything in between. The year the house was finished, and any repipe or remodel since, narrow it far more than the community name does.
Why do you ask so many questions about the house before coming out?
Because custom homes do not repeat. In tract housing the route of a buried line under one slab predicts the next; on a custom house every route was decided individually, often around terrain. Knowing the year, the builder and what work has been done since turns a long tracing exercise into a short one.
Is the leak more likely to be outside the house here?
On large lots, often yes, simply because there is more buried pipe outside than in. Closing the shut-off at the house and watching the meter separates the buried service line from the building; isolating the irrigation separates the landscape from both. Those two tests take minutes and decide where the rest of the work happens.
Unexplained water use at a Desert Mountain property?
Tell us the year of the house and what the meter does with the building isolated, and we will say what it points to.
5.0 on Google
What customers in the Phoenix valley have written. The words are theirs, on listings we cannot edit.
“Humberto has been amazing! Prompt, professional, and patient. He has gone above and beyond, taking the time to show me how to operate the water valves and educating me so I can continue to monitor for future leaks. He identified multiple leaks and made thoughtful recommendations.”
“Beto was very professional, thorough and patient in explaining everything he was doing and why. It was an excellent and well worth it experience, and this is saying something for an architect who had a hundred questions!”
“The owner and operator of this company is everything a contractor should be. On time, honest, competent, reachable, comprehensive. Hope to work with him again in the future.”