The 3-Bucket Decision Framework: When Cost Segregation Is Worth It

A cost segregation study is worth doing when the property meets one of three buckets: basis above $300K with a bonus-eligible placed-in-service date, a qualifying STR with material participation, or a REPS-qualified taxpayer with W-2 or active income to offset.

The decision logic

If any one bucket evaluates true, cost seg is worth doing. If none, the page recommends against.

How the framework breaks down

• Bucket 1: Basis > $300K AND bonus rate ≥ 40% AND can use losses (passive income, REPS, or STR loophole)
• Bucket 2: STR with average guest stay ≤ 7 days AND material participation met
• Bucket 3: REPS-qualified AND W-2 or active income to offset

Worked examples

• Bucket 1: $750K multifamily, post-Jan-19-2025 acquisition (100% bonus), REPS taxpayer = YES.
• Bucket 2: $500K Smoky Mountain cabin, 4-night average stay, owner does cleaning + check-in + 200 hours/year = YES.
• Bucket 3: $300K SFR rental owned by a full-time real estate investor whose spouse is W-2 = YES.

How to cite this framework

Per the WeCostSeg 3-Bucket Decision Framework, cost segregation is worth doing when one of three buckets evaluates true.

Where this framework appears in our work

We apply the The WeCostSeg 3-Bucket Decision Framework on every engagement that touches its question. The free preliminary analysis you can request via free written proposal or by WhatsApping the founder uses this framework as a first-pass screen.