Summary

24 items · 1–2 hours per property

Why Every Serious Offer Deserves a Structured Review

Falling in love with a home is easy. Protecting yourself from hidden costs, legal encumbrances, and structural problems takes deliberate effort. Due diligence is the structured process of verifying what you have been told — and uncovering what no one has volunteered. Done thoroughly, it either confirms you are making a sound purchase or gives you the evidence to renegotiate or walk away.

This checklist is organised around the four domains where problems most commonly surface: physical condition, legal and title matters, financial costs, and neighbourhood factors. Work through every group before waiving contingencies or proceeding to closing. If you are still preparing your finances before house hunting, see our guide to financial preparation first.

Waiving Contingencies Carries Real Risk

In competitive markets, buyers are sometimes pressured to waive inspection or financing contingencies to strengthen an offer. Doing so removes your primary contractual protections. Before waiving any contingency, discuss the full financial and legal implications with your real estate attorney. Saving the deal is not worth inheriting an undisclosed structural problem or being unable to secure financing.

Tools and Professionals You Will Need

Due diligence is a team effort. No single resource covers everything — you need qualified professionals alongside your own research.

Required

Licensed Home Inspector

Conducts a systematic physical assessment of the structure, systems, and components of the property.

Required

Real Estate Attorney

Reviews contracts, title search results, HOA documents, and disclosure statements to protect your legal interests.

Required

Title Company

Performs the title search, issues title insurance, and manages the closing process.

Required

Buyer's Agent

Coordinates inspections, pulls comparable sales data, and guides negotiation based on due diligence findings.

Optional

Specialist Inspectors (Sewer, Roof, Mold, Structural)

Provide expert assessments in specific areas that fall outside a general inspection's scope.

Required

FEMA Flood Map Service Center

Free public tool to check whether a property falls within a designated flood zone.

Required

Local Building / Permitting Department

Provides the permit history for the property, confirming whether renovations were approved and properly closed.

The Full Due Diligence Checklist

Work through these groups in roughly the order shown. Physical and legal checks typically happen during the inspection and attorney review period; financial and neighbourhood research can begin earlier.

Physical Condition

Hire a licensed home inspector and attend the inspection in person so you can ask questions directly. Must
Request a radon test, especially in regions where elevated radon levels are common. Should
Commission a sewer scope inspection to check for root intrusion, cracks, or blockages in the lateral line. Should
Arrange a separate specialist inspection for the roof if the general inspector flags any concerns or if the roof is more than 15 years old. Should
Test for mold or asbestos if the home was built before 1980 or if musty odors, staining, or insulation concerns are noted. Should
Review the full written inspection report and note every item flagged as a safety hazard, major defect, or deferred maintenance need. Must

Legal and Title Matters

Order a title search through a title company or real estate attorney to identify liens, judgments, or ownership disputes. Must
Review the property's permit history through the local building or permitting department to verify that improvements were properly permitted and closed. Must
Obtain and read the current property survey to confirm boundaries, easements, and encroachments. Should
Check HOA documents — including CC&Rs, financials, meeting minutes, and any pending special assessments — if the property belongs to a homeowners association. Must
Confirm zoning classification and any overlay districts that could restrict intended use or future development. Should
Ask the seller to complete a full seller's disclosure statement and read every line carefully. Must

Financial Exposure

Obtain written property tax figures from the county assessor and factor the full annual amount into your monthly budget. Must
Request insurance quotes specific to the address, including flood insurance if the property is in or near a FEMA flood zone. Must
Review utility cost history (electricity, gas, water) by asking the seller or requesting records from the utility providers. Should
Verify any HOA dues, special assessment status, and reserve fund adequacy before factoring carrying costs into your budget. Must
Estimate repair and deferred maintenance costs from the inspection report with the help of a contractor's rough quote where needed. Should
Confirm your lender's appraisal is scheduled and understand the implications if the appraised value comes in below the purchase price. Must

Neighbourhood and Location

Check flood zone status on FEMA's Flood Map Service Center and research the property's claims history if possible. Must
Visit the neighbourhood at different times of day and on weekdays versus weekends to assess traffic, noise, and activity levels. Should
Research proximity to noise or odor sources such as highways, rail lines, flight paths, or industrial facilities. Should
Review recent comparable sales (comps) with your buyer's agent to assess whether the asking price is supported by market evidence. Must
Check local school district ratings and attendance boundaries if schools are a priority, using publicly available district data. Nice to have
Research any planned infrastructure projects, rezoning applications, or commercial developments near the property that could affect quality of life or value. Nice to have

Unpermitted Work Can Become Your Problem

When you buy a property, you typically inherit responsibility for any unpermitted work performed by previous owners. Local authorities can require you to bring the work up to current code at your expense, or in some cases require removal. Always pull the permit history before closing, and ask your real estate attorney how to handle any gaps you discover. This is not a minor administrative step — it can represent thousands of dollars in liability.

Once inspection results are in hand, review our article on negotiating after a home inspection to understand which findings typically merit price adjustments and which do not.

First-time buyers should also pair this checklist with things first-time buyers often overlook when touring a property — many physical red flags are easiest to catch during a showing, before you are committed to an inspection fee.

Putting It All Together Before You Close

Due diligence is not a single event — it unfolds in stages across the days between accepted offer and closing. Physical inspection findings feed into legal and financial reviews; title search results may prompt additional questions about permits or liens. Treat this checklist as a living document, returning to it as each new piece of information arrives.

For a clear picture of how all the stages fit together, see The Home Buying Process, From Offer to Closing. If, after completing this checklist, you decide the property is not right for you, the Renting Smart hub covers your alternatives as a renter while you continue your search.

This article is for general informational and educational purposes only and does not constitute legal, financial, or professional real estate advice. Consult a licensed real estate attorney, buyer's agent, and qualified inspector for guidance specific to your circumstances and jurisdiction.

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Home & Real Estate Editorial Team · Contributor

Home & Real Estate Editorial Team is the collective byline for our editorial team and contributor network. Articles published under this byline or an editorial pen name are researched, written, and reviewed according to our editorial standards for clarity, consistency, and independence before publication.

The content on this site is for informational purposes only and is not a substitute for professional advice. Always consult a qualified professional for guidance specific to your situation.