Three factors drive residential cost seg reclassification: (1) whether the property is furnished (STRs reclassify 50–70% more than unfurnished SFRs); (2) whether site improvements exist (pools, outdoor kitchens, hardscape — all 15-year property); (3) whether the owner qualifies for material participation or Real Estate Professional status to actually use the losses. Under the OBBBA (2025+), 100% bonus depreciation is permanently restored, so the reclassified amount is fully deductible in Year 1.
How Residential Property Type Changes the Math
All residential rental property depreciates over 27.5 years by default. The cost segregation question is: how much of your purchase basis qualifies for a shorter recovery class? That depends heavily on three things the building itself doesn't tell you — what's inside it, what's around it, and who's using it.
The core residential breakdown:
- Unfurnished SFR rental: 15–22% typical reclassification. Mostly appliances (5-yr), basic site improvements like driveway/fencing (15-yr), and some interior fixtures.
- Furnished STR / Airbnb: 25–32% typical. Adds the entire FF&E package (furniture, electronics, kitchenware, linens, outdoor entertainment) as 5-year personal property.
- Luxury residential (STR or SFR): 28–35% because custom finishes, specialty lighting, and designer-grade installations all count as 5-year if non-structural.
- Condo (owner interest only): 18–24% because the owner's basis excludes common elements. Interior-only cost seg.
For the full breakdown of why STRs specifically outperform unfurnished rentals, see why STR cost segregation reclassifies 25–35%.
Example 1: Unfurnished SFR — $400K Suburban Rental
Raleigh, NC — Standard Suburban Rental
A classic buy-and-hold SFR in a mid-Atlantic suburb. 1,850 sqft, built 1998, with basic 2018 kitchen/bath updates. Unfurnished — tenant brings their own furniture. Cost seg reclassification is constrained to appliances, non-structural interior finishes, and basic site improvements.
| Component | MACRS Class | Amount |
|---|---|---|
| Appliance package (range, fridge, dishwasher) | 5-yr | $4,200 |
| Kitchen cabinetry, countertops (2018 update) | 5-yr | $14,500 |
| Bathroom fixtures, vanities | 5-yr | $6,800 |
| LVP flooring, carpet | 5-yr | $8,200 |
| Specialty lighting (recessed LED, ceiling fans) | 5-yr | $2,400 |
| Driveway, walkway, basic landscaping | 15-yr | $9,800 |
| Fence, exterior lighting, irrigation | 15-yr | $6,500 |
| Total reclassified (17.9% of basis) | $52,400 |
Traditional long-term rentals anchor the low end of residential reclassification. 17.9% of basis is typical for this type: not exceptional, but the $795 study fee returns ~24x in Year-1 tax savings. The real constraint isn't the cost seg — it's the passive-loss rules that may prevent the owner from using the losses unless they qualify as a Real Estate Professional or have other passive income to offset.
Example 2: Furnished Airbnb — $600K Mountain STR
Asheville, NC — Furnished Mountain Cabin
A fully-furnished Airbnb cabin near the Blue Ridge Parkway. Owner materially participates (self-managed with occasional cleaner support, >100 hrs/year documented). Average guest stay: 4.2 days (qualifies as non-passive activity under Treas. Reg. §1.469-1T). Basis after land allocation: $480K.
| Component | MACRS Class | Amount |
|---|---|---|
| Furniture package (beds, dressers, sofas, tables) | 5-yr | $22,000 |
| Appliances + kitchenware + linens | 5-yr | $14,500 |
| Electronics (TVs, smart home, streaming, speakers) | 5-yr | $8,200 |
| Hot tub + outdoor heaters + fire pit | 5-yr | $18,500 |
| Interior finishes (cabinets, flooring, fixtures) | 5-yr | $28,000 |
| Specialty lighting, decorative accents | 5-yr | $6,800 |
| Covered deck, privacy fencing, hot tub pad | 15-yr | $16,500 |
| Driveway, landscape hardscape, exterior lighting | 15-yr | $12,200 |
| Total reclassified (26.4% of basis) | $126,700 |
The $47K Year-1 tax savings on a $600K STR dwarfs the comparable $19K on the $400K SFR from Example 1 — both the 47% higher purchase price AND the 50% higher reclassification rate compound. Because the owner materially participates and the property qualifies as non-passive (7-day avg stay), the full Year-1 loss offsets W-2 or other active income. An unfurnished $600K rental in the same market with the same owner would reclassify roughly $100K (17%) and produce ~$37K in Year-1 savings — but those losses would be passive and likely suspended until sale.
Example 3: Luxury Beach Condo — $1.2M Waterfront
Clearwater Beach, FL — High-End Beachfront Condo
Luxury 20th-floor condo in a new-construction tower. Owner uses 3 weeks/year, rents remainder via STR platform. Building association manages common elements (pool, gym, hallways, exterior) — not in owner's basis. Cost seg limited to interior + unit-specific fixtures. Post-land-allocation depreciable basis: $960K.
| Component | MACRS Class | Amount |
|---|---|---|
| High-end kitchen (Miele, Sub-Zero, custom cabinetry) | 5-yr | $58,000 |
| Three bath suites (soaking tubs, rain showers) | 5-yr | $42,000 |
| Furniture (designer package, rentable-quality) | 5-yr | $48,000 |
| Smart home: motorized shades, lighting, sound | 5-yr | $28,000 |
| Engineered hardwood, porcelain tile | 5-yr | $35,000 |
| Custom built-ins, wine storage, closets | 5-yr | $26,500 |
| Balcony outdoor kitchen, heated floor (balcony) | 15-yr | $19,500 |
| Total reclassified (26.8% of basis after land) | $257,000 |
Luxury condos punch above their weight on cost seg because the interior fit-out ($58K kitchen, $42K baths, $48K furniture) represents a disproportionate share of basis. A similar-price SFR in the same market might only have $35K of kitchen + $25K of bath + no built-ins. Combined with Florida's zero state income tax, every federal dollar saved stays in the owner's pocket with no state-level conformity concerns.
Example 4: High-End Airbnb — $1.5M Luxury Vacation Rental
Park City, UT — Ski-In/Ski-Out Luxury STR
A 4BR luxury STR in Park City's Canyons Village. Ski-in/ski-out access, dual-season operation (ski Dec–Apr, summer outdoor recreation May–Oct). Fully furnished with design-grade finishes. Owner self-manages with help from local property manager during peak weeks. Depreciable basis after 25% land allocation: $1.125M.
| Component | MACRS Class | Amount |
|---|---|---|
| Designer furniture package (4 bedrooms, great room) | 5-yr | $72,000 |
| Kitchen: Wolf, Sub-Zero, Miele, custom cabinetry | 5-yr | $68,000 |
| Four bathrooms (two master-grade) | 5-yr | $52,000 |
| Boot dryers, ski storage, wet-room mud entry | 5-yr | $14,500 |
| Electronics + smart home + sound system | 5-yr | $28,000 |
| Hot tub + outdoor heaters + fire table | 5-yr | $22,000 |
| Specialty lighting, interior finishes | 5-yr | $38,000 |
| Radiant floor heating (entry, mud room, bath floors) | 15-yr | $32,000 |
| Snow-melt driveway + heated walkway | 15-yr | $28,500 |
| Hot tub deck, outdoor kitchen, landscape hardscape | 15-yr | $26,000 |
| Total reclassified (34.7% of basis) | $381,000 |
Top of the residential cost seg range: 34.7% reclassification on a dual-season luxury STR. Three factors stack: luxury interior fit-out, furnished STR status (full FF&E package qualifies), and mountain-market 15-year infrastructure (radiant floors, snow-melt driveway, heated walkways — rare in most residential markets but common in ski towns). Utah's 4.65% flat state tax conforms to federal bonus depreciation, so additional ~$17K in state tax savings on top of the federal number. Total combined savings approach $158K.
The Pattern Across These Four Examples
Reclassification ranges from 17.9% (unfurnished SFR) to 34.7% (luxury mountain STR). The three drivers:
- Furnished vs. unfurnished is worth 8–12 percentage points of reclassification — furniture, electronics, and kitchenware alone are 10–15% of basis on a properly-outfitted STR.
- Specialty infrastructure (radiant floors, snow-melt driveway, hot tubs, outdoor kitchens) adds another 5–8 points on high-end properties that have it.
- Luxury fit-out (custom cabinetry, designer appliances, high-end bath suites) compounds the 5-year class by 3–5 points on properties where the original build was spec-grade.
The passive-activity question is separate from reclassification and almost as important. Short-term rentals with material participation are non-passive, so Year-1 losses offset W-2 income immediately. Long-term rentals are passive by default, and the losses wait for either REPS status, future passive income, or sale. A $47K paper loss that you can use this year is worth $17K in cash; a $47K paper loss stuck in passive-suspension is worth $0 until you unlock it.
Running the Numbers for Your Property
Plug your property into the cost segregation calculator for a reclassification estimate specific to your property type and purchase price. If it makes sense, order the full engineering-based study — delivered to your email in under an hour, CPA-ready.
Get the Residential Cost Seg Quick Reference (Free)
SFR vs. STR vs. condo reclassification rates, Year-1 tax savings tables, and property-type-specific component breakdowns.
No spam. Unsubscribe anytime.