Property Taxes: Garbage In, Garbage Out at Dallas Central Appraisal District

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Why Property Taxes are so BAD
Why Property Taxes are so BAD

Several weeks ago I wrote a pair of columns (here and here) about how the core math of Texas property taxes is fundamentally broken (and always has been).  While, A+B=C, if “A” is patently wrong, how can “B” and “C” be accurate?

In this case, “A” is assessed property value, “B” is property tax rate and “C” is the revenue required to run the city and state.  In Texas, without real estate transaction disclosure, “A” is always a bit of a crapshoot as DCAD pulls assessed values out of thin air.  Now I’m sure there’s some enormous algorithm they use to calculate values (a bottle of Jack, a blindfold and a dart board?) but in the end, not having access to the actual selling prices of real estate in Texas hamstrings a meaningful conversation about taxation rates.

As it is, property tax assessment districts in Texas have higher rates (“B”) than are actually needed because they have no visibility into “A” valuations.  Texas rates are high because the underlying assessed values are inaccurate.

Yesterday, the Dallas Morning News outlined how this year’s rate increases hit middle-income homes harder than higher income homes.  Color me shocked!  And yet, the middle class are just as vocal about keeping Texas’ system of non-disclosure in place.

For me, this is the most salient paragraph …

“Local officials say they are hamstrung by state law in trying to accurately assess commercial and high-end residential properties. Texas, unlike most other states, doesn’t require real estate sales prices to be publicly disclosed. Property owners who can afford pricey Realtors often demand nondisclosure agreements. State law also permits property owners who successfully challenge their appraisals to collect attorneys’ fees from the county.”

If non-disclosure died, here’s what would happen…

First, the state would take 3 to 5 years to change the system.  During that time, the state taxation districts would rebuild their databases of assessed values based on transactions occurring during that window.  From there, the state would reverse engineer the taxation rate.  If the state needs $X and property is worth $X, what rate gets us to that level?  Hint … it’s a rate a HELL of lot lower than it is today.

For example …

A $200,000 home taxed at today’s homestead rate of ~2.3 percent equated to $4,600 per year in property taxes.  But let’s say that home is really worth $310,000 … then the tax rate would only need to be 1.5 percent to reach the same $4,600 in annual property taxes.

I hear you saying … “If, after this exercise homeowners still pay about the same, what’s the point?”

First and foremost, accuracy.  Just as Realtors base selling prices on comparable sales, so would taxing districts like DCAD.  Rather than painting the Mona Lisa with a paint roller, assessed values and any annual increase/decrease would be accurately portrayed in their calculations.  In being able to “see the math,” homeowners and DCAD would be working from the same data … and be more accurate.

Being more accurate means FUTURE increases and decreases are felt more quickly in the system.  For example, in my cursory look through DCAD, it appears it took them a couple of years to begin reducing taxes during the recession.  Had they been given real data, those reductions may have happened quicker, saving homeowners money, and likely with a lot fewer tax protests. (Of course, like gas, prices go up more quickly than they go down. Funny that.)

Second, the wealthy, who are paying for property tax agents to tamp down their taxes, would have A LOT harder time succeeding.  The folks the Morning News said are “demanding nondisclosure agreements” on their multi-million dollar transactions would no longer be able to keep their traps shut.

Personally this is what galls me the most: The wealthy are the most able to pay taxes but are also the least likely to pay them.  Also, the infrastructure of the USA, from education to roadways to business opportunities, has enabled their wealth, and yet they are hell bent on not paying their fair share back into the system to pass those opportunities on to the next generation.  As I noted in my original columns, this was not the case in the past.  In eras when personal taxation was excruciatingly high, over 80 percent thought that was fair.  But that was a time before greed became god.

You’re afraid

I get that you’re thinking that if your property was assessed at 100 percent of its true value, then your taxes would go through the roof.  But I think that’s a false assumption. Even with our broken system, everyone from the mayor to the governor are seeking a way to lower taxes.

Unfortunately, like most political fixes, it’s weak tea.  They are all exploring lowering the taxation rate while none have spoken out to eliminate non-disclosure and install a level playing field.

The reason is simple.  The wealthy, who donate and have political influence, don’t want it.  They want to buy their $5 million house that’s only assessed at $1.8 million. What they fail to understand is that like everyone else, if DCAD had accurate information, their rate would decrease and their actual taxes paid might not change much.

Proof?  Here are the 10 most expensive houses currently for sale in Dallas with their asking price and DCAD valuations.  Will these homes sell for these prices?  Unlikely, but they’ll sell a lot closer to asking than assessed value.  But it does demonstrate what the owner and their Realtor believe they’re worth (armed with accurate MLS sales data) versus what they’ve paid their tax consultant to convince DCAD (who doesn’t have access to the same data).

Address Assessed Value Asking Price
10711 Strait Lane $18,200.000 $32,347,000
5950 Deloache Ave $18,340,290 $28,500,000
10210 Strait Lane $12,903,810 $27,500,000
10620 Strait Lane $8,298,160 $17,900,000
4009 W. Lawther Dr. $13,264,530 $17,500,000
10777 Strait Lane $8,616,100 $15,000,000
4800 Park Lane $9,893,530 $14,500,000
4926 Deloache Ave. $5,582,640 $13,645,000
5020 Elm Hollow Dr. $7,928,830 $11,950,000
4842 Brookview Dr. $4,623,020 $11,595,000

In the end, if a homestead is $100,000 off in assessed value, it’s theoretically $2,300 off in its taxes, but for every $1 million off, it’s $23,000 in tax avoided.  Just these top 10 homes represent over $82 million in discrepancy and are in theory avoiding some $1,904,080.07 in taxes a year. Oh, and nine of the 10 list tax agents on their DCAD records whose job it is to reduce property tax bills.

The more costly the property, the more incentive to finagle the assessed value. (And isn’t there something a little fishy when a homeowner on one hand lists a home for sale at a price vastly more than they’re paying a tax consultant to plead with DCAD that its “worth” with the other? Jus’ sayin’.)

But as I say, with all cards on the table, the math is more accurate and ultimately has less negative impact on ALL homeowners.  As it is, when you have garbage data going into a calculation, your end result is also garbage.

Me?  Over the past three years, my assessed value has gone up 35 percent and my taxes have been capped for the past two … meaning they wanted to raise me more but were limited by the 10 percent cap on homesteads.  So, like many of you, this more than just an academic exercise for me.


Remember:  Do you have an HOA story to tell?  A little high-rise history? Realtors, want to feature a listing in need of renovation or one that’s complete with flying colors?  How about hosting a Candy’s Dirt Staff Meeting?  Shoot Jon an email.  Marriage proposals accepted (they’re legal)!



Jon Anderson

Jon Anderson is's condo/HOA and developer columnist, but also covers second home trends on An award-winning columnist, Jon has earned silver and bronze awards for his columns from the National Association of Real Estate Editors in both 2016, 2017 and 2018. When he isn't in Hawaii, Jon enjoys life in the sky in Dallas.

Reader Interactions


  1. Larchwooder says

    While your premise is correct, I worry about one major potential flaw. Your theory is built on the fact that the city of Dallas would LOWER the tax rate because the city doesn’t “need” that much tax revenue. I would imagine it’s rare, if ever, that the city of Dallas hasn’t been able to find places to spend excess revenue.

    • mmJon Anderson says

      I understand your political distrust (and share some of it) but property tax rates were lowered last year. And if disclosure resulted in an average increase of 1/3 in taxes paid, there would be revolt and none of them would be reelected. Could you imagine the owners of those top 10 homes sitting back and paying an average $190,000 more in property tax? Also, were sale prices disclosed and tax rates unchanged, it would throw a significant portion of Texas real estate into a price drop as affordability took a hit. The only way to move towards disclosure is to do it right, doing it wrong has too great a downside for Texans and more importantly politicians who’d be out of a job.

  2. mmCandy Evans says

    Jon, seriously now: we need to look at where the money is going that is coming in from all the new development in Dallas. (I accept the fact that the rich never pay their fair share because they can hire people to find loopholes. To me, that’s life. Always been,always will be. That’s why taxing the rich never works IMO.) But here now: how many more new buildings — high rise apartments, condos — do we have in Dallas now than say five years ago and where are those tax dollars going?

    • Jon Anderson says

      Actually, historically taxing the rich more does work. If you believe that Reagan-era trickle-down economics work, look at Kansas today. It’s a shambles. With evasion being the goal today, regulations have to be adopted to close the loopholes as much as possible. Economics is a terrarium. You can have one large tree or many smaller plants …not both. And I’m not necessarily advocating for higher monies spent on property tax, I’m saying that without transparency, any fix is window-dressing the issue.

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