Picture this. You’ve spent a decade building a career at Raytheon in the aerospace corridor, and the family balance sheet has grown with McKinney itself. Instead of parking that surplus in more index funds, you’ve been buying rental houses — one in Stonebridge Ranch, a duplex near the historic square, a fourplex out toward Trinity Falls. The rents are strong and Collin County keeps growing. The one thing eating into the returns is the tax on that rental income.
A cost segregation study is the fix. It front-loads depreciation so a large deduction lands in Year 1, sheltering the rental income the portfolio throws off. In Texas, with 0% state tax, that federal deduction isn’t one lever among several — it’s the whole game.
Why McKinney is a buy-and-hold town
McKinney isn’t a relocation stopover. It’s where people arrive and stay — the fastest-growing affluent suburb on the north side of Dallas, built around a downtown square people actually love and anchored by employers like Raytheon / Collins Aerospace, Globe Life, and Independent Financial. The wealth here is homegrown and patient: engineers, financial-services professionals, and business owners whose net worth has compounded alongside Collin County’s population boom.
That profile produces a specific kind of investor. Not the relocated executive flipping equity into a distant vacation cabin, but the local operator building a rental book — single-family houses across Stonebridge Ranch and Craig Ranch, a small multifamily building or two, held for cash flow and appreciation in a market they know street by street. The question isn’t “how do I diversify out of one employer’s stock.” It’s “how do I keep more of what these rentals earn.”
Who’s buying — and the combined rate
The McKinney buyer pool is dominated by SFR portfolio investors and small-multifamily owners — people who work locally, know the submarkets, and are accumulating rental holdings as Collin County grows. A smaller slice buys out-of-state STRs (Broken Bow, OK and the Texas Hill Country are common) for the short-term-rental deduction. Both face the same clean stack:
Verify with your CPA — combined-rate math depends on filing status and AGI thresholds for NIIT.
How the deduction actually gets used
This is the part McKinney investors need to get right, because Texas has no state tax to muddy it. For a long-term SFR or a small multifamily building, the accelerated depreciation produces passive losses — they shelter income from your other rentals and carry forward, rather than offsetting W-2 salary. If you own several rental properties (as most McKinney portfolio owners do), those losses net against the whole portfolio’s income, which is exactly where the value lands.
Two routes reach beyond passive income. Real Estate Professional Status requires 750+ hours and more than half of your personal-services time in real estate — realistic for a full-time landlord or spouse, not for someone still at Raytheon. The short-term-rental exception (Reg. §1.469-1T(e)(3)(ii)) applies to a property with a seven-day-or-less average guest stay plus 100 hours of material participation — the lane that unlocks the deduction for a Broken Bow cabin against active income. Which route fits depends on your facts; confirm with your CPA before you count on it.
A representative worked example
Take a McKinney investor who buys a 3BR cabin in Broken Bow, OK — a popular Texoma STR market a few hours north — for $635K. After land, the $475K adjusted basis breaks into roughly $95K of 5-year assets (appliances, hot tub, furnishings, game-room and media equipment), $2K of 7-year property, and $64K of 15-year property (decking, gravel drive, fire pit, landscaping, and outdoor site work).
That’s $161K reclassified into accelerated depreciation in Year 1 — about 34% of basis. At the ~40.8% federal + NIIT rate, the cash tax savings come to about $66,000. With no Texas tax in the mix, that number is the entire benefit, undiluted.
Where McKinney investors buy
Most of the buying happens close to home, across Collin County and the north-Dallas metro. Adjacent markets we study constantly: Plano, TX — the next submarket south, dense with rental SFR and small multifamily. Frisco, TX — the relocated-executive market next door, where the STR-out-of-state pattern is stronger. And Dallas, TX — the core metro, where the same investors add duplexes and small apartment buildings.
Learn more
- What is cost segregation?
- The STR tax exception, explained
- Cost segregation in Plano, TX — adjacent Collin County page
- Cost segregation in Frisco, TX — adjacent north-Dallas page
Cost segregation data for McKinney, TX investors
The representative (median) outcome across 50 engine-modeled property scenarios matched to the McKinney, TX investor profile. Year-1 savings computed at the metro combined bracket of 40.80%.
Representative scenarios modeled via Cost Seg Smart's proprietary
engine — IRS ATG-aligned methodology, industry-standard 2026 construction cost data base costs,
calibrated metro multipliers. n=50 fixtures matched to
McKinney, TX investor profile. Not derived from individual
client returns. Methodology v1.0.0, generated
July 2026 (reproducible seed: mckinney-tx_v1_2026-05-17).
Year-1 savings computed at 40.80% combined (federal 37% + NIIT 3.8%; this state has no personal income tax, so there is no state-side adjustment). Confirm specifics with your CPA.
Tax law current as of July 2026. Federal: OBBBA restored 100% bonus depreciation under §168(k), permanent for property both acquired and placed in service after January 19, 2025 (property acquired or placed in service on or before that date remains under the prior 40% phase-down); 2026+ stays 100%. State conformity varies; verify with your CPA.
CPA use note: These figures estimate the size of the depreciation deduction. Whether the loss is usable in the current year depends on passive-activity rules, STR material participation, REPS status, entity structure, depreciable basis, and state conformity — your CPA decides how and when it is applied. Specialty and site components (equipment, casework, docks, pools, arenas, tenant improvements, and similar) are only classified when you own them and they are included in the depreciable basis being studied.
How should McKinney, TX investors choose a cost segregation provider?
For a McKinney, TX investor buying a property in the $635,000 range, the choice of study provider is the single biggest controllable variable in the ROI. The methodology is fixed by IRS Audit Techniques Guide rules (industry-standard construction cost data, MACRS classification, engineering-based component reclassification) — what varies is delivery cost and turnaround time.
Traditional engineering studies often run several thousand dollars and can take several weeks, because they include on-site inspections, sales discovery calls, and scheduling overhead. The IRS Cost Segregation Audit Techniques Guide does not require a physical site visit; it requires engineering-based classification with industry-calibrated cost derivation and component-level documentation.
Modern automated providers (such as Cost Seg Smart) deliver the same IRS ATG–aligned study for $495–$1,595 in under one hour, using satellite imagery, county assessor data, and the same industry-standard construction cost databases. For a McKinney, TX investor at the metro's combined bracket, that cost delta typically exceeds the study cost itself by several times over. The CPA-Ready Guarantee (full refund if the report can't be used by your CPA) plus the 60-day money-back policy makes the decision essentially risk-free on the report itself.
The automated path is best-fit for McKinney, TX investors who: own residential STR property valued under $2M, are comfortable uploading closing docs + property photos online (no in-person visit required), and want the report in time to file the current year's return rather than the next one.
All Cost Seg Smart studies include the CPA-Ready Guarantee (full refund if your CPA can't use the report) plus a 60-day money-back policy. Reports are delivered in under one hour with no on-site visit required.