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Duplex with one owner-occupied unit: Draft correction exercise

Track material report questions through dated corrections. 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.

What this file should establish

Record the original row, factual issue, provider response and final version. Preserve both drafts. Separate a factual correction from a disagreement requiring technical tax review, and route each to the right professional.

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.

A situation to work through

The owner renovates the leased apartment and replaces a boiler serving both units.

For this situation, start with unit floor plan. Identify the period and legal owner before combining it with the other records. Keep the original source and explain any adjustments in a separate reconciliation.

Review point

Specifically review the risk of assigning the full shared boiler cost exclusively to the rental unit.

An implementation file contains an obsolete draft.

Question for the reviewer

Which issue was corrected and which version should the preparer implement?

Expected handoff

A versioned correction register.

Separate facts supported by documents from estimates and unresolved assumptions. Assign each missing item to a responsible person and a date. Send the reconciliation alongside the source references so the reviewer can trace each conclusion.

Your preparation worksheet

Enter a reference to the document, the person who can supply it and the unresolved question. Use file names or locations rather than account numbers or other sensitive information. Entries stay in this page until you close or refresh it. They are not sent to us or saved automatically. Export before leaving.

Record or decisionSource referenceStatusResponsible personOpen question
unit floor plan
ownership and occupancy records
shared-system invoices
and asset schedules
draft version
affected row
issue
provider response
final version

Mark not applicable only after noting why. A collected record can still require correction. Review the exported file before sharing it with your adviser.

Continue this preparation file

Cost-pool reconciliation exercise

Reconcile a proposed study total with the source cost file.

Invoice overlap exercise

Check whether contractor packages and direct purchases count the same cost twice.

Quantity reconciliation exercise

Compare report quantities with the supported inventory.

Location trace exercise

Trace every material entry to a property, building, unit or work area.

Owner-payer-user exercise

Identify whose report and tax schedule the evidence belongs to.

Date sequence exercise

Check the timeline supplied to the report provider.

Existing schedule tie-out

Connect the study entries to the asset history already maintained.

Removal-retention exercise

Reconcile removed, retained and new work across a project.

Estimate disclosure exercise

Identify what is documented and what is reconstructed in the report inputs.

Preparer implementation exercise

Make the final report handoff and filing responsibility explicit.

Future disposition exercise

Preserve the report history for a later replacement or property sale.

All Duplex with one owner-occupied unit resources

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.