Home / Cost Segregation Report Reconciliation Workbench
Duplex with one owner-occupied unit preparation files
A two-unit property can combine personal and rental use. The provider needs a supported allocation for roof, structure, and other systems serving both units.
Preparation resource. Record completion does not determine eligibility, deductions or tax savings. Ask your qualified tax professional to resolve the facts and applicable rules.
Start with the operating facts
The owner renovates the leased apartment and replaces a boiler serving both units.
Specifically review the risk of assigning the full shared boiler cost exclusively to the rental unit.
Collect unit floor plan; ownership and occupancy records; shared-system invoices; and asset schedules. Match each document to the relevant entity, property and reporting period. Then choose the decision below that matches the question you need to resolve.
Source and review boundaries
Use the following primary guidance to frame the questions. The worksheet organizes facts; it does not replace analysis of the relevant year, ownership, elections or state treatment. Record the applicable period, confirm the source version and retain the preparer's written conclusions with the supporting documents.
Published 2026-10-09. Prepared by Stratum Cost Segregation as an educational record-collection resource.