Due Diligence

Your Last Chance to Walk Away

Due diligence is the investigation period between signing a purchase contract and closing. It is your window to verify every assumption you made during underwriting. The inspection contingency gives you the legal right to cancel the contract and get your earnest money back if you discover material issues. Once you close, every problem is yours. Experienced investors treat due diligence as a structured process, not a casual checklist. They schedule inspections within the first 5 days, order title work immediately, verify insurance availability, confirm rent rolls with actual leases, and review every financial document the seller provides. The goal is to find deal-killing issues fast enough to either renegotiate or walk away without wasting weeks of effort.

Physical Inspection Checklist

A professional home inspection costs $300-$600 for a single-family property and $500-$2,000+ for multifamily. It is the most important $500 you will spend in the entire transaction. The inspector evaluates the property's physical condition and identifies defects, deferred maintenance, and safety hazards. Beyond the general inspection, specialized inspections may be warranted based on the property's age, location, and construction type.

• Foundation: Cracks, settling, water intrusion, bowing walls. Structural repairs range from $5,000 (minor crack repair) to $50,000+ (full foundation replacement). This is the most expensive system to repair.
• Roof: Age, condition, remaining life. Asphalt shingles last 20-30 years ($8K-$15K replacement). Metal roofs last 40-60 years ($15K-$30K). Missing shingles, soft spots, or active leaks are immediate negotiating points.
• HVAC: Age and condition of heating and cooling systems. Average life: 15-20 years. Replacement: $5,000-$12,000 per system. Systems over 15 years old should be priced into your renovation budget.
• Plumbing: Pipe material (copper, PEX, or galvanized/polybutylene which need replacement), water heater age (10-12 year life, $1,000-$2,000 to replace), signs of leaks, water pressure.
• Electrical: Panel capacity (100A minimum for modern use, 200A preferred), wiring type (aluminum wiring from the 1960s-1970s is a fire risk and insurance red flag), GFCI outlets in wet areas.
• Pest/Termite: Subterranean termites cause $5B in property damage annually in the U.S. A termite inspection is $75-$150 and non-negotiable in the Southeast and Gulf Coast.
• Environmental: Lead paint (pre-1978 homes), asbestos (pre-1980 insulation, floor tiles, siding), radon (basement/crawlspace test, $150), mold (visible or confirmed by air quality test).

Title Search, Title Insurance, and Survey

A title search examines public records to verify the seller has clear, legal ownership and the right to transfer the property. It identifies liens (mortgages, tax liens, mechanic's liens, judgment liens), easements, restrictions, and any competing ownership claims. Title insurance protects you against defects that the title search missed: forged documents, undisclosed heirs, recording errors, or boundary disputes. It is a one-time premium paid at closing, typically $1,000-$3,000 on a residential purchase. A survey confirms the property's boundaries, identifies encroachments (a neighbor's fence on your land, or your structure on the neighbor's land), and locates easements, setback lines, and flood zones. Older surveys may be acceptable if nothing has changed, but a new survey ($300-$800) eliminates ambiguity.

• Title search: Verifies ownership and identifies liens, judgments, and encumbrances.
• Title insurance: Protects against undiscovered title defects. One-time cost at closing.
• Survey: Confirms boundaries, identifies encroachments and easements.
• Tip: Always get an owner's title insurance policy. The lender requires a lender's policy, but the owner's policy protects YOU.

Zoning, Appraisal, and Environmental

Zoning verification confirms the property's current use is legal and any planned changes are permitted. A single-family property in a residential zone is straightforward. A property you plan to convert to a duplex or short-term rental requires zoning confirmation before you close. If the use is not permitted, you need a variance or rezoning, both of which are uncertain and time-consuming. The appraisal is ordered by the lender to confirm the property is worth at least the loan amount. If the appraisal comes in below the purchase price, you have three options: renegotiate the price, bring additional cash to cover the gap, or walk away. You can challenge an appraisal if you believe the appraiser used inappropriate comps, but challenges succeed less than 20% of the time. Environmental due diligence matters more on commercial properties and land. A Phase I Environmental Site Assessment ($1,500-$3,000) reviews historical use, regulatory databases, and site conditions for contamination risk. If the Phase I identifies potential issues, a Phase II ($5,000-$25,000) involves physical testing (soil samples, groundwater wells). Environmental contamination can cost $50,000 to millions to remediate. Never skip Phase I on commercial or former industrial sites.

• Zoning: Verify current use is legal. Confirm any planned changes are permitted before closing.
• Appraisal: Lender-ordered valuation. Low appraisal = renegotiate, pay gap, or walk.
• Phase I ESA: Historical review for contamination risk. Required for commercial. Recommended for any non-residential purchase.
• Phase II ESA: Physical testing triggered by Phase I findings. Expensive but necessary when contamination is suspected.

Never Waive the Inspection to Win a Deal

In competitive markets, some buyers waive inspections to make their offer more attractive to sellers. This is reckless. The $500 you save on an inspection could cost $50,000 when the foundation crack you missed requires full repair. If you must compete aggressively, shorten the inspection period instead of eliminating it. A 5-day inspection window instead of 14 days shows seriousness without blind risk. You can also offer an "inspection for information only" clause, where you agree not to request repairs but retain the right to cancel if you discover a deal-killing defect. Never close on a property you have not physically walked with a qualified inspector. Photographs and virtual tours miss structural issues, water damage behind walls, and mechanical system problems. Even new construction should be inspected. Builder quality varies enormously, and code inspections do not catch everything.

Due diligence protects your capital. Inspect the physical property (foundation, roof, HVAC, plumbing, electrical, pest). Verify title and get title insurance. Survey the boundaries. Confirm zoning supports your intended use. Order a Phase I on commercial properties. Challenge low appraisals with better comps. Use every day of the inspection period, and never waive it to win a deal.