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Duplexes: State implementation map

Keep property study conclusions separate from state-return decisions. Separate unit-specific work from 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

List property locations, owners, filing history and questions for each jurisdiction. Preserve the federal report as one input rather than copying its estimate into every state model. Ask the preparer to review the actual state treatment.

Separate unit-specific work from systems serving both units.

A situation to work through

One duplex unit is renovated while the other remains occupied.

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

Record which unit each cost and service date belongs to.

A federal estimate is presented as the final combined tax result.

Question for the reviewer

Which jurisdiction-specific adjustments or filings require review?

Expected handoff

A jurisdiction-by-entity implementation question 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
leases
shared-system invoices
cost allocations
asset schedule
property state
owner state
filing history
federal input
state review question

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

Acquisition basis bridge

Connect the closing record to the property cost pool supplied for review.

Improvement project file

Separate new work, retained items, removals and project credits.

Placed-in-service evidence

Build the factual timeline of readiness for intended use.

Ownership and use map

Identify the owner, user and payer for the property and its components.

Rental operation record

Prepare booking or tenancy and activity records alongside the property file.

Depreciation history request

Recover prior schedules and reporting before changing the property analysis.

Loss usability questions

Connect the property estimate to the owner-level review.

Study quote scope file

Compare providers using the same property record and written scope.

Return preparer handoff

Make the study and filing responsibilities explicit.

Replacement history file

Separate the old component history from the new spending.

Planned sale preparation

Evaluate the exit with the full depreciation and transaction history.

All Duplexes 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 AE Tax Advisors as an educational record-collection resource.

Focused implementation guides

Resolve the related evidence question before carrying a planning assumption into implementation.