Is Cost Segregation Worth It on a $500K–$1M Rental?

Is cost segregation worth it on a $500K–$1M rental? Almost always — and this range is the cleanest cost-seg ROI territory in residential real estate. The basis is large enough that even a $895 study fee is a rounding error against $25K–$70K in Year-1 federal tax savings. The math holds across long-term rentals, short-term rentals, condos, and small multifamily 2–4 unit properties. The exceptions are narrow (selling within 12 months, low bracket without REPS, extreme coastal land allocation on a vanilla LTR) and we’ll flag them up front if your specific property doesn’t fit.

This post walks the math for $500K, $625K, $750K, $850K, and $1M properties at three federal brackets (24%, 32%, 37%) for both LTR and STR property types, three worked examples with illustrative figures, and the precise scenarios where we’d tell you to skip the study. For the $200K–$500K range, see Is Cost Seg Worth It on a $400K Rental?. For sub-$300K properties, see the $495 affordable cost segregation page.

Key Takeaways

• A $750K STR at 37% bracket produces ~$54,800 in Year-1 federal savings; a $750K LTR at 32% bracket produces ~$33,300 — both against a $995 study fee
• The $500K–$1M range hits the engineering sweet spot: large enough basis that study fees are ≤2% of Year-1 savings, small enough that automated structured-data analysis matches on-site engineering accuracy
• Furnished short-term rentals typically reclassify 19–39% of basis (most often around 26%) vs. 9–32% (most often around 16%) for single-family long-term rentals — FF&E density is the main difference
• 100% bonus depreciation under OBBBA (2025+) front-loads the entire reclassified amount into Year 1, multiplying ROI 5×–7× over straight-5-year MACRS
• Three worked examples (illustrative) in the $625K–$950K range are walked end-to-end below
• The honest break point: 12-month-sale, low-bracket-no-REPS, or extreme coastal land allocation on vanilla LTR

Why $500K–$1M is the cleanest cost-seg territory

A few things converge in this range that make the math reliably positive.

The study fee is a rounding error. At $995 for a $700K property or $1,595 for a $1.5M property, study fees run 0.1%–0.2% of purchase price. Even at the lowest credible bracket and most conservative reclassification assumptions, Year-1 savings comfortably exceed the study fee by 25×–50×. There’s no scenario in this range where study fees consume the benefit at our pricing — that’s a problem unique to traditional $5,000+ firms working on properties under $400K.

The basis is large enough that engineering precision matters. Below $300K basis, small variations in reclassification (16% vs. 19%) move the dollar number a few thousand dollars one way or the other. Above $500K basis, those same percentage differences are $10K–$20K of Year-1 savings. This is exactly the range where engineering-grade cost-data component classification produces measurable tax outcomes — not where the calculator approximation of “20% reclass” would suffice.

The property is small enough that on-site engineering doesn’t add accuracy. Above ~$5M with specialty assets, on-site engineering judgment captures details (custom MEP, specialty industrial equipment, hospitality build-out) that structured-data analysis can miss. Below $1M residential, the property data available in public sources (county assessor, RentCast, OSM, satellite imagery) plus industry-standard 2026 construction cost data produces a MACRS classification that falls within a few percentage points of an in-person engineering study. So you get the same engineering result without paying for the labor.

The bracket math typically works. Most owners of $500K–$1M rental properties are in the 32% or 37% federal bracket. Combined with 100% bonus depreciation under OBBBA (2025+), Year-1 federal savings of $25K–$70K become reachable on a single property. That’s life-changing tax math at a $895–$995 study cost.

The math, property by property

Here’s the core table. Assumptions: 22% land allocation for LTRs, 27% for STRs (STRs typically have higher coastal/event-market exposure with premium land), 19% reclassification for LTRs, 27% for STRs (STR FF&E density), full 100% bonus depreciation per OBBBA. These are mid-range assumptions — your specific property may run higher or lower based on neighborhood, finish level, and FF&E investment.

Long-term rental (LTR) at $500K–$1M

Long-term rental (LTR) at $500K–$1M

Purchase price	Land allocation	Depreciable basis	Reclassified (19%)	Tax savings (24%)	Tax savings (32%)	Tax savings (37%)	Study fee
$500,000	$110,000	$390,000	$74,100	$17,784	$23,712	$27,417	$895
$625,000	$137,500	$487,500	$92,625	$22,230	$29,640	$34,271	$895
$750,000	$165,000	$585,000	$111,150	$26,676	$35,568	$41,126	$995
$875,000	$192,500	$682,500	$129,675	$31,122	$41,496	$47,980	$995
$1,000,000	$220,000	$780,000	$148,200	$35,568	$47,424	$54,834	$1,295

Short-term rental (STR) at $500K–$1M

Short-term rental (STR) at $500K–$1M

Purchase price	Land allocation	Depreciable basis	Reclassified (27%)	Tax savings (24%)	Tax savings (32%)	Tax savings (37%)	Study fee
$500,000	$135,000	$365,000	$98,550	$23,652	$31,536	$36,464	$895
$625,000	$168,750	$456,250	$123,188	$29,565	$39,420	$45,580	$895
$750,000	$202,500	$547,500	$147,825	$35,478	$47,304	$54,695	$995
$875,000	$236,250	$638,750	$172,463	$41,391	$55,188	$63,811	$995
$1,000,000	$270,000	$730,000	$197,100	$47,304	$63,072	$72,927	$1,295

Reading the tables

A $750K STR at the 37% bracket (high-W2 owner with the §469 STR loophole) produces $54,695 in Year-1 federal savings against a $995 study fee — that’s a 55× ROI in Year 1 alone. The same $750K property as a long-term rental for an REPS-qualified owner at 37% produces $41,126 — still a 41× ROI. Even a vanilla LTR at the lower 32% bracket without REPS (passive losses carry forward) produces $35,568 of Year-1 deduction value once the passive losses unlock.

The dramatic difference between LTR and STR — roughly 30%–35% more tax savings on the same purchase price — comes almost entirely from FF&E density. A short-term rental needs furniture, fixtures, appliances, decorative lighting, and removable interior items that all classify as 5-year personal property under MACRS. A long-term rental typically delivers unfurnished, so the FF&E line item is much smaller. The bands we publish put the typical furnished STR around 26% of depreciable basis against around 16% for a single-family long-term rental; see the bands we publish by property type.

The boring rentals where the math reliably pencils — not just oceanfront luxury, but suburban SFRs and small urban multifamily.

Three worked examples: Midwest SFR, Smoky Mountains STR, urban duplex

These are worked examples with modeled, illustrative figures, not client engagements. Mid-range residential properties in three typical markets.

$625K long-term rental, Midwest suburb (32% bracket)

$625K long-term rental, Midwest suburb (32% bracket)

Line item	Amount
Purchase price	$625,000
Land allocation (county assessor)	($131,250 / 21%)
Depreciable basis	$493,750
Reclassified to 5/7/15-year (18.7%)	$92,331
Year-1 deduction (100% bonus)	$92,331
Tax savings at 32% bracket	$29,546
Study fee	$895
ROI on study fee	33.0×

Assume a REPS-qualified owner with three other rentals in the 32% federal bracket. An 18.7% reclassification is a plausible figure for a 1990s-era SFR with standard MACRS components — no FF&E density, no specialty land improvements, just a textbook engineering breakdown. A $29,546 Year-1 tax saving is the kind of cash that can go toward the next down payment.

$750K short-term rental, Smoky Mountains (37% bracket)

$750K short-term rental, Smoky Mountains (37% bracket)

Line item	Amount
Purchase price	$750,000
Land allocation (RentCast assessor)	($210,000 / 28%)
Depreciable basis	$540,000
Reclassified to 5/7/15-year (28.4%)	$153,360
Year-1 deduction (100% bonus)	$153,360
Tax savings at 37% bracket (W-2 offset via §469 STR loophole)	$56,743
Study fee	$995
ROI on study fee	57.0×

Assume a high-W2 tech earner self-managing the STR (clears the 100-hour material-participation test). The 7-day-average-stay rule makes losses non-passive without requiring Real Estate Professional Status, so the $153K Year-1 deduction lands directly against W-2 income. FF&E loadout for a Smokies vacation rental — premium furnishings, hot tub, outdoor fire pit, themed bedrooms — drives the 28.4% accelerated allocation, materially above the LTR baseline.

$950K duplex (LTR), urban infill market (37% bracket, REPS)

$950K duplex (LTR), urban infill market (37% bracket, REPS)

Line item	Amount
Purchase price	$950,000
Land allocation (county assessor)	($266,000 / 28%)
Depreciable basis	$684,000
Reclassified to 5/7/15-year (20.5%)	$140,220
Year-1 deduction (100% bonus)	$140,220
Tax savings at 37% bracket (REPS-qualified spouse)	$51,881
Study fee	$1,495
ROI on study fee	34.7×

Assume a multi-property owner running a portfolio, with a non-W2 spouse who logs the 750 hours/year required for REPS qualification. This duplex reclassifies slightly more than the single-family example above (20.5% vs. 18.7%), toward the upper part of the duplex band, because per-unit FF&E in turnkey rentals and its site work added to the 5/15-year buckets. Form 3115 not needed if it was placed in service in 2025 and filed in the current year.

Why this range works for the §469 STR loophole

The Internal Revenue Code §469 rules treat short-term rentals (average customer stay of 7 days or less) as a non-rental activity, which means material participation alone — no Real Estate Professional Status required — converts the losses from passive to non-passive. For a high-W2 owner self-managing an STR, that’s the difference between a deduction that carries forward indefinitely (passive) and a deduction that offsets ordinary income this year (non-passive).

The $500K–$1M range is where this matters most. At $300K, the absolute STR deduction is $20K–$25K — meaningful, but not life-changing. At $1M, the absolute deduction is $63K–$73K at 37% bracket — large enough that it materially changes annual cash flow for high earners. Most of our STR customers are in this property range specifically because the §469 loophole produces transformative tax outcomes.

The full §469 / material-participation breakdown is here, including the seven IRS tests and the documentation requirements. For STR-specific guidance, see the Airbnb cost segregation guide.

When this range DOESN’T pencil

We won’t sell you a study that doesn’t pencil. Three scenarios in the $500K–$1M range where we’d tell you to skip:

1. Selling within 12 months without a 1031 exchange

Depreciation recapture on sale eats most of the Year-1 acceleration. The Year-1 federal benefit looks great, but the offsetting tax liability when you sell the property within 12 months largely cancels it out. Net economics: marginal. Our advice: wait 24+ months minimum, do a 1031 exchange into a replacement property, or pass on the study.

2. Low federal bracket without STR loophole or REPS

If you’re in the 12% or 22% federal bracket and the property is a long-term rental (no §469 STR loophole), and you don’t qualify for Real Estate Professional Status, your accelerated losses become passive and carry forward indefinitely. The Year-1 deduction is real, but the time-value benefit shrinks every year you can’t use it. For most owners in this situation, we’d recommend deferring the study until you have offsetting passive income or a property-type change that unlocks active treatment.

3. Extreme coastal land allocation on vanilla LTR

Pacific Beach, Mission Beach, Coronado, and similar markets typically run 45–55% land allocation due to coastal premium. Combined with the lower reclassification rate of a long-term rental (~19%), the depreciable basis can be small enough that even at $1M purchase price, Year-1 savings drop to $20K–$25K range. Still positive, still above study fee, but materially less impressive than the same purchase price in an inland market with 20–25% land allocation. We’ll quote either way and the math is still positive at our pricing — but if you’re an investor specifically optimizing for cost-seg ROI, the inland or non-coastal urban options will perform better.

For everything else in the $500K–$1M range — long-term holds, mid-term rentals, owner-occupied portion deducted prorata, conversion plays, recent renovations, multi-property portfolios, 1031 inbound — the math typically pencils, and we’ll quote the study usually the next business day of your order.

How the engine handles this range

A few things our cost-seg engine does specifically for the $500K–$1M tier:

• Per-property-type accel ratios. STR vs. LTR vs. condo vs. duplex/triplex/fourplex each get different baseline component weights. A $750K STR isn’t just “the LTR formula × 1.6” — the engine applies STR-specific FF&E density factors and event-market intensity uplift on top of the underlying modeled component costs.
• Coastal land floor protection. For premium-land markets where the assessor’s split would produce an unreasonably small depreciable basis (sub-25% improvement on a $1.5M coastal property), the engine applies a calibrated minimum to prevent the math from collapsing on edge cases.
• STR FF&E intensity uplift. Properties flagged as short-term rentals get an additional 5-year personal property allocation reflecting the typical FF&E loadout (furniture, kitchenware, themed décor, outdoor amenities). It is an itemized allocation, not a flat percentage added on top, and the STR band we publish is the range most of our delivered STR studies fall inside (reclassification bands by property type).
• Form 3115 lookback support. For properties owned 2+ years without a prior cost-seg study, the engine produces the §481(a) catch-up calculation alongside the regular study. On a 4-year-old $850K property, that catch-up can be $40K–$60K of cumulative missed depreciation claimable as a single-year deduction. The methodology section in your report addresses the 13 IRS ATG quality elements (Pub 5653 §3.4) for audit defense.

For the full engine documentation, see /methodology/. For a property-by-property estimate, run the calculator.

Bottom line

The $500K–$1M residential range is where cost segregation transitions from “marginal but positive” to “transformative.” Year-1 federal savings of $25K–$70K against $895–$995 study fees produce ROIs that are difficult to find in any other residential tax strategy. The methodology is the same construction cost data + MACRS + IRS ATG framework that costs $5,000–$15,000 at traditional firms — we just run it from structured property data instead of an on-site engineer visit, which the IRS doesn’t require.

If your property fits this range and you can use the loss this year (STR loophole, REPS, or passive offset), the math is overwhelmingly positive. If you’re unsure, run the calculator for a Year-1 estimate in 30 seconds, or order the full engineered study at costsegsmart.com/order/ for under $1,500 with delivery usually by the next business day.

For the broader range below $500K, see Is Cost Seg Worth It on a $400K Rental?. For the entry tier under $300K, see How Much Does a Cost Segregation Study Cost? and /cheap-cost-segregation/. For the price tier above this range — where Year-1 federal savings cross $80K — see our Cost Segregation $1M–$2M guide. For typical ranges by property type, see the reclassification bands we publish, drawn from delivered studies where we have enough of them and modeled elsewhere.

Frequently asked

Is cost segregation worth it on a $750K Airbnb?

Yes, almost always. A furnished short-term rental typically reclassifies 19–39% of depreciable basis, most often around 26% (higher than long-term rentals because of FF&E density). At 27% reclassification, $548K depreciable basis (after 27% land allocation), and a 37% bracket with W-2 offset, a $750K STR produces roughly $54,800 in first-year federal tax savings. Against a $995 study fee, that's a 55× ROI in Year 1. The §469 STR loophole (7-day average stay) makes the losses non-passive without REPS, so the W-2 offset is reachable for most self-managing owners.

What's the typical Year-1 federal savings on a $1M rental?

Range is roughly $52,000 (LTR at 32% bracket) to $70,000+ (STR at 37% bracket with W-2 offset). On the LTR side: $1M × 75% (after land) = $750K basis × 19% reclassification × 32% = $45,600; bump to 37% bracket and you're at $52,700. On the STR side: $1M × 70% (after STR-typical 30% land) = $700K basis × 27% reclassification × 37% = $69,930. At $1,295 study fees in this tier, ROI runs 41×–54× in Year 1 alone.

Does the math change for STR vs LTR in the $500K-$1M range?

Materially yes. Furnished short-term rentals most often reclassify around 26% of depreciable basis into accelerated classes vs. around 16% for single-family long-term rentals — the difference is FF&E (furniture, fixtures, appliances all in 5-year personal property). On a $750K property, that's roughly $40K extra in Year-1 deductions before bracket math. STRs also benefit from the §469 7-day-average-stay loophole, which makes losses non-passive without requiring Real Estate Professional Status. Long-term rentals need REPS or passive-income offsets to use the deduction this year.

Should I pay more than $1,295 at this range?

For residential properties under $2M, no. Cost Seg Smart's $895–$1,595 tier produces an IRS ATG-aligned 35-45 page CPA-ready report with internal technical review & QC — the same deliverable a $5,000 traditional firm produces. Where you'd pay more is properties over $5M with specialty assets, recent ground-up commercial new construction, or hospitality with significant food-and-beverage build-out. Below that, the methodology is identical and the labor model differential is what drives the price gap.

How does 100% bonus depreciation help in this range?

It's the multiplier that makes the math work. Under the One Big Beautiful Bill Act (signed July 2025), 100% bonus depreciation is permanent for 2025 and beyond, retroactively applied to property placed in service after January 19, 2025. That means the entire reclassified amount (5/7/15-year property) is deductible in Year 1 — not spread over 5 years. On a $750K STR, that's the difference between deducting $148K in Year 1 versus deducting roughly $30K/year for 5 years. The time value of money on the front-loaded deduction is what produces the 30×–60× ROI on the study fee.

When does cost seg in this range NOT pencil?

Three scenarios. (1) You're selling within 12 months without a 1031 exchange — depreciation recapture on sale will eat most of the Year-1 acceleration. (2) You're in the 12% or 22% federal bracket and can't use the loss this year (no STR loophole, no REPS, no passive income to offset) — passive losses carry forward but the time value shrinks. (3) The property is heavily land-allocated (50%+ in coastal markets like Pacific Beach or Coronado) AND the property type is plain-vanilla LTR — the small depreciable basis combined with low reclassification rates produces marginal savings. For everything else in the $500K–$1M range, the math reliably pencils.