ADU added to a rental Cost Segregation: Report reconciliation

The issue this scenario creates

An accessory unit may share services with an existing rental. Reconcile new construction and allocated shared costs without counting the same system in both buildings.

The main objective is to separate new-unit construction from shared building and site systems. A useful analysis makes the ownership and timeline understandable before anyone applies a reclassification estimate. Do not replace missing history with an assumed new purchase or a generic depreciation percentage.

Report reconciliation approach

Start with the scope and basis reconciliation, then inspect material asset descriptions, quantities, methods, and assumptions. Compare what the report says was acquired or constructed with what the owner records establish. Ask for an explanation of differences before implementing the schedule. A larger proposed deduction does not resolve an inconsistency in physical facts or costs.

Create a written issue log and preserve dated versions of the report. Identify whether an issue concerns missing evidence, an allocation, a classification, or return treatment. Direct physical and costing questions to the study provider and filing questions to the preparer. Record the final decision and which asset rows it affects.

Scenario-specific evidence

Start with ADU plans, permits, contractor costs, utility routes, and completion records. Connect each record to the event it establishes. Explain conflicts and missing years rather than presenting a single unexplained number.

Hypothetical example

A backyard unit connects to the main house's water and electrical service.

The review should guard against duplicating shared utility costs across two studies. Resolve that concern using the specific records above. The example illustrates a process question, not an available deduction or an actual completed client study.

Question to resolve before closing this task

Do the final report descriptions and quantities match the supported ownership, use, and improvement history?

Write down the response and retain the supporting record. Assign an owner to any remaining issue and confirm whether it changes the study scope, projected benefit, delivery timeline, or implementation cost. A property report and a usable deduction are separate steps in the workflow.

Practical completion checklist

• Identify the actual property owner and reporting taxpayer.
• Preserve original records and explain missing information.
• Keep existing assets separate from later additions and replacements.
• Confirm the provider and return preparer have accepted the same basis reconciliation.
• Retain the final report and the schedules actually implemented.