Everything Denver short-term rental owners need to evaluate cost segregation: how much you actually save, what changes by neighborhood, where the regulatory traps are, and when the strategy doesn't work.
For a typical Denver short-term rental, cost segregation produces a median $30,149 Year-1 federal tax deduction at the 37% top marginal bracket with 100% bonus depreciation. The range across 5 representative Denver fixtures spanning $545,000–$985,000: $19,449 to $33,871.
The reclassification ratio, the share of your depreciable basis the engine moves from 27.5-year (or 39-year) into accelerated 5/7/15-year recovery, ranges from 10.8% to 22.2% depending on property type, neighborhood, build year, and STR vs LTR rental mode.
Denver sits in a structurally clean Colorado tax position for cost segregation, full federal §168(k) conformity, flat 4.40% state rate computed on federal taxable income, no addback. The 100% federal bonus restored under OBBBA flows through to your Colorado return without adjustment, producing combined federal-plus-state Year-1 acceleration of roughly 41.4% of accelerated reclassification dollars at the top federal bracket. The cost-seg case for Denver is unusually clean from a tax-policy standpoint, what shapes the actual ROI is the underlying property mix.
Denver is overwhelmingly a fix-and-flip + small-MF + ADU investor market, not an STR market. The City and County of Denver operates a primary-residence-only short-term-rental ordinance that restricts most absentee STR strategies, similar in spirit (though less restrictive in detail) to LA's Home-Sharing Ordinance. Denver buyers who want STR exposure typically pair a Denver rental property with a mountain feeder STR (Breckenridge, Steamboat Springs, Estes Park, Winter Park), running the mountain property under the §469 short-term-rental loophole and the Denver property as a standard rental for §1031 purposes.
The bones of cost-seg in Denver are: 1920s LoHi and Park Hill pre-war SFR with heavy post-2010 renovation; 1940s–1960s Berkeley and Sloan's Lake stock with ADU expansion potential; post-2005 Stapleton/Central Park new builds with cleaner reclassification ratios because the original construction is recent; and suburban Jefferson County SFR rental (Lakewood, Wheat Ridge) outside Denver's STR restrictions. The engine works particularly well on the renovation-heavy LoHi and Park Hill bungalow stock, renovation cost segregation is where the heaviest 5/15-year work lives.
Colorado conforms to federal §168(k) bonus depreciation. The 100% federal bonus restored under OBBBA reduces both your federal AND Colorado liability in the same year, with no addback or decoupling. Combined with Colorado's flat 4.40% rate computed on federal taxable income, Denver cost-seg studies produce the full federal-plus-state Year-1 acceleration cleanly.
Verify with your CPA. State tax conformity for federal §168(k) is adjusted frequently. Framing reflects our understanding as of May 2026, always verify current-year treatment with a qualified tax professional before relying on specific dollar projections.
State income tax structure: Flat single rate on federal taxable income. Bonus depreciation addback required: No.
What this means in practice: your federal cost-seg deduction also reduces your Colorado state income tax liability in the same year, with no addback or recapture mismatch. This is the cleanest tax position possible for cost-seg.
Denver cost-seg ROI varies more by sub-market than by city. Here's what each neighborhood's profile looks like:
Typical value: $825,000 · Typical land allocation: ~30%
Pre-war 1920s bungalow stock heavily renovated post-2010. High land allocation reflects neighborhood-scarcity premium. Fix-and-flip + ADU developer market; some STR-allowed via Denver's primary-residence host requirement.
Typical value: $685,000 · Typical land allocation: ~26%
Mix of pre-war Park Hill bungalow stock and Stapleton/Central Park new-build (post-2005). Lower land allocation than LoHi. Strong investor activity on rental SFR and ADU additions.
Typical value: $745,000 · Typical land allocation: ~28%
1940s–1960s SFR with substantial post-2015 renovation. ADU rush since 2018 Denver ADU expansion. Mid-tier land allocation, strong fix-and-flip activity.
Typical value: $985,000 · Typical land allocation: ~34%
Higher-priced SFR and condo market southeast of downtown. Heaviest land allocation in our Denver fixtures. Better suited to single-family rental hold strategies than fix-and-flip.
Typical value: $545,000 · Typical land allocation: ~22%
Lower-cost SFR rental market outside Denver city limits, Jefferson County jurisdiction, no Denver STR ordinance. Lower land allocation. Stronger long-term-rental cash flow profile.
Each fixture below was run through the same engine that produces real customer studies. Numbers are reproducible.
Located in LoHi / Highlands (Northwest Denver). Built 1923, 1850 sqft.
The engine reclassified $87,071 into accelerated MACRS categories (14.8% of depreciable basis): $47,661 of 5-year personal property, $39,410 of 15-year land improvements. Land was allocated at 28.6% from statistical. With 100% bonus depreciation and a 37% federal marginal bracket, the Year-1 federal tax savings illustrative figure is $32,216.
Located in Park Hill / Stapleton (Central Park). Built 1948, 1950 sqft.
The engine reclassified $74,032 into accelerated MACRS categories (15.1% of depreciable basis): $39,001 of 5-year personal property, $35,031 of 15-year land improvements. Land was allocated at 28.6% from statistical. With 100% bonus depreciation and a 37% federal marginal bracket, the Year-1 federal tax savings illustrative figure is $27,392.
Located in Berkeley / Sloan's Lake. Built 1952, 1700 sqft.
The engine reclassified $81,485 into accelerated MACRS categories (15.3% of depreciable basis): $43,501 of 5-year personal property, $37,984 of 15-year land improvements. Land was allocated at 28.6% from statistical. With 100% bonus depreciation and a 37% federal marginal bracket, the Year-1 federal tax savings illustrative figure is $30,149.
Located in Cherry Creek / Glendale. Built 2009, 1700 sqft.
The engine reclassified $52,565 into accelerated MACRS categories (10.8% of depreciable basis): $47,418 of 5-year personal property, $5,147 of 15-year land improvements. Land was allocated at 50.3% from statistical_premium_floor. With 100% bonus depreciation and a 37% federal marginal bracket, the Year-1 federal tax savings illustrative figure is $19,449.
Located in Suburban Jefferson County (Lakewood / Wheat Ridge). Built 1968, 1800 sqft.
The engine reclassified $91,542 into accelerated MACRS categories (22.2% of depreciable basis): $63,589 of 5-year personal property, $26,504 of 15-year land improvements. Land was allocated at 24.5% from statistical. With 100% bonus depreciation and a 37% federal marginal bracket, the Year-1 federal tax savings illustrative figure is $33,871.
City and County of Denver Short-Term Rental Ordinance: STR operation is restricted to a host's primary residence with annual registration. Non-primary-residence STR is largely prohibited in Denver city limits. Adjacent jurisdictions with different regimes: Jefferson County (Lakewood, Wheat Ridge, Arvada), no city STR ordinance applies; Adams County (Westminster, Thornton), varies; Arapahoe County (Cherry Creek South, parts of Aurora), varies. STR-intent buyers should verify the property's specific incorporation status. For non-STR investor strategies (fix-and-flip, small MF, ADU LTR), Denver's primary-residence STR restriction is irrelevant, standard §469 passive-loss rules apply, and real-estate-professional status is the typical path to active treatment for high-volume operators. Denver's ADU expansion (2018 zoning amendment plus 2023 expansion) supports detached and attached ADU construction in most SFR zones; ADU rentals operate under standard residential rental rules.
For the full IRS rule reference layer, §168(k), §469 material participation, §469(c)(7) real estate professional, state conformity, see irsdepreciationrules.com, our open reference site.
Honest framing matters. Cost segregation is the wrong move when:
Generally not in Denver city limits. The City and County of Denver's STR ordinance restricts short-term rental operations (stays under 30 days) to a host's primary residence with annual registration. Non-primary-residence absentee STR operation is largely prohibited within Denver. Adjacent Jefferson County (Lakewood, Wheat Ridge, Arvada, Golden) has no equivalent restriction, Jefferson County properties can be operated as STRs without the primary-residence requirement. The typical Denver-investor STR strategy is to keep Denver-proper acquisitions as LTRs (fix-and-flip, small MF, ADU rental) and run any STR-loophole-eligible properties out of mountain feeder markets (Breckenridge, Steamboat Springs, Estes Park) or adjacent jurisdictions where the ordinance doesn't apply.
Yes, and ADU additions are one of the more cost-seg-friendly Denver investment moves. The 2018 Denver ADU zoning amendment (expanded in 2023 to permit ADUs in all SFR zones citywide) unlocked detached and attached ADU construction across LoHi, Berkeley, Park Hill, and Sloan's Lake. New ADU construction costs add to your depreciable basis as a distinct asset, and a cost-seg study can identify 5/7/15-year components separately from the 27.5-year structure. ADU projects with $180K–$350K construction costs typically produce $35K–$80K of Year-1 federal-plus-state acceleration at top brackets. Note: ADUs in Denver city limits must be operated as LTRs to avoid the primary-residence STR restriction, but they fit cleanly within standard §469 rental treatment.
Cleanly. Colorado computes state taxable income starting from federal taxable income and applies the flat 4.40% rate, there's no Colorado-specific bonus depreciation addback or modification for §168(k) acceleration. For a Denver owner taking $80,000 of accelerated reclassification at the 37% federal bracket, federal Year-1 savings is $29,600. Colorado Year-1 savings at 4.40% is $3,520. Both captured the same tax year, no addback, no decoupling math. Combined Year-1 acceleration: $33,120, or 41.4% of the accelerated reclassification dollars. This is materially cleaner than California (decoupled, only the federal portion accelerates in Year 1) and worse only than no-state-income-tax states (Texas, Florida, Tennessee, Nevada, Washington, Wyoming).
Because the renovation cost pool drives the reclassification math more than the original structure. Original 1920s LoHi bungalow construction (basic stick-frame, plaster-on-lath, original plumbing, original knob-and-tube electrical) doesn't reclassify meaningfully, most of the original shell falls into the 27.5-year residential category. But these properties typically have $200K–$500K of post-2010 renovation layered on: full electrical upgrades with new panels and rewiring (significant 5-year portion), kitchen and bathroom gut-renovations (FF&E 5-year, fixtures 5-year), HVAC additions (5-year and 27.5-year mixed), deck and hardscape additions (15-year), and high-density FF&E from STR-furnishing-pattern renovations (5-year). The engine treats renovation_cost as a separate allocable pool with its own MACRS distribution, for a heavily renovated LoHi bungalow, that pool often contributes 60–80% of the total accelerated component.
Single-property cost seg works at Denver's typical price point ($550K+ purchase), the $495–$1,495 Cost Seg Smart fee is small enough that even moderate Year-1 federal-plus-state savings ($15K–$40K range) produce strong ROI on the study. But there's a multi-property compounding effect: portfolio investors running 3+ Denver acquisitions per year get more value per study because the marginal study fee is small against the cumulative deductions, and the §469 passive-loss treatment across the portfolio integrates more cleanly. For a first single-property buyer at the $550K–$850K Denver price band, the study makes sense as a standalone economic decision; for a portfolio operator with 3+ acquisitions annually, cost seg becomes a default part of every closing.
Same engine used to produce these benchmarks. Real property data, real assessor records, real renovation history. Studies start at $495 for residential under $300K. Audit defense included.