Red Flags Checklist

The warning signs that experienced buyers watch for. Know when to negotiate, when to inspect deeper, and when to walk away.

Last updated: February 2026
Phase 4: Active Shopping Stage 4.1: Finding Properties

What You'll Learn

Not every red flag means "run away." Some are negotiating points. Some require further inspection. Some are deal-breakers. This interactive checklist helps you document what you find during home tours and understand what each issue really means.

Identify critical vs. cosmetic issues during home tours
Understand realistic repair costs for common problems
Know which red flags are deal-breakers vs. negotiating points
Track and compare issues across multiple properties

Understanding Red Flag Severity

Not all issues are created equal. Here's how to interpret what you find.

Critical Potential deal-breaker, major cost
Serious Significant issue, needs attention
Moderate Worth noting, negotiating point
Minor Cosmetic or easy fix

Your Interactive Checklist

Track red flags for each property you visit. Your data is saved locally in your browser.

Foundation & Structure

0/7
Large foundation cracks (wider than 1/4 inch) Horizontal or stair-step cracks indicate serious structural movement
Critical $5,000-$15,000+
Noticeably uneven or sloping floors Drop a ball and watch if it rolls. More than 1/2" drop over 10 feet is concerning
Serious $3,000-$10,000
Doors/windows stick or frames are misaligned Can indicate settling or foundation issues
Moderate $500-$3,000
Sagging ceiling or visible structural beams Check basement/crawlspace for damaged floor joists or support beams
Serious $2,000-$8,000
Interior wall cracks (especially around doors/windows) Small hairline cracks are normal; large diagonal cracks are concerning
Moderate $300-$2,000
Walls separating from ceiling or floor Major structural red flag requiring immediate assessment
Critical $8,000-$25,000+
Basement/crawlspace moisture or water stains Can lead to mold, rot, and foundation damage
Serious $2,000-$10,000

Roof & Exterior

0/8
Roof is 15+ years old (for asphalt shingles) Typical lifespan is 20-25 years; replacement may be imminent
Serious $8,000-$20,000
Missing, curling, or damaged shingles Can lead to leaks if not addressed
Moderate $500-$3,000
Sagging roofline or visible dips Indicates structural damage or rot
Critical $3,000-$15,000+
Water stains on ceiling or top floor walls Roof leak evidence; check attic if accessible
Serious $1,500-$5,000
Damaged, clogged, or missing gutters/downspouts Can cause water damage to foundation and siding
Minor $500-$2,000
Cracked, warped, or rotting siding Test wood siding with screwdriver for soft spots (rot)
Moderate $3,000-$12,000
Extensive paint peeling or bubbling Cosmetic but can indicate moisture issues
Minor $2,000-$8,000
Chimney cracks, leaning, or missing mortar Can be safety hazard and expensive to repair
Moderate $1,000-$5,000

Plumbing

0/7
Low water pressure throughout house Test all faucets and showers; could indicate pipe corrosion
Moderate $500-$3,000
Slow drains in multiple locations Could be simple clogs or indicate sewer line issues
Minor $200-$2,000
Water heater is 10+ years old Check date sticker; typical lifespan is 8-12 years
Serious $1,200-$3,500
Visible pipe leaks or water damage under sinks Check all cabinets for staining, warping, or active drips
Serious $300-$5,000
Polybutylene pipes (gray plastic, 1978-1995) Known to fail; many insurers won't cover homes with them
Critical $4,000-$15,000
Sewer gas smell indoors Indicates broken seal, vent, or sewer line issue
Serious $500-$5,000
Rust stains in sinks/tubs or discolored water Corroding pipes or water heater; test hot and cold
Moderate $800-$4,000

Electrical

0/6
Fuse box instead of circuit breakers Outdated and often inadequate for modern electrical needs
Critical $1,500-$4,000
Aluminum wiring (common 1960s-1970s) Fire hazard; many insurers won't cover without remediation
Critical $5,000-$15,000+
Few outlets, heavy use of extension cords May need additional circuits for safety
Minor $500-$2,000
No GFCI outlets in kitchen/bathrooms Code requirement for safety near water
Moderate $200-$800
Flickering lights or frequently tripping breakers Could indicate overloaded circuits or wiring problems
Serious $500-$5,000
Knob-and-tube wiring visible (pre-1950s) Major insurance and safety issue; must be replaced
Critical $8,000-$20,000+

HVAC (Heating & Cooling)

0/5
AC/furnace is 12+ years old Typical lifespan is 15-20 years; replacement may be coming
Serious $5,000-$12,000
System not heating or cooling properly Test during showing; ask for maintenance records
Critical $500-$10,000
Strange noises from HVAC system Banging, squealing, or grinding indicates mechanical issues
Moderate $300-$3,000
Rooms with very uneven temperatures Could be ductwork issues or poor insulation
Minor $500-$2,500
Rust on furnace or AC unit Indicates moisture problems or end of lifespan
Serious $1,000-$8,000

Interior Issues

0/6
Visible mold or musty smell Check bathrooms, basements, attics; indicates moisture problem
Serious $1,500-$10,000+
Water stains on walls or ceilings Even if "repaired," ask about the source and solution
Moderate $500-$5,000
Single-pane windows or damaged seals Poor energy efficiency; fog between panes means broken seals
Moderate $5,000-$15,000
Damaged or worn flooring throughout Cosmetic but adds up; get quotes for replacement
Minor $3,000-$10,000
Strong pet/smoke odors throughout May require replacing carpets, padding, and deep cleaning
Moderate $1,000-$5,000
Suspiciously fresh paint or repairs Ask why; could be covering water damage or mold
Minor Varies

Pest & Environmental

0/5
Signs of termites or wood-destroying insects Mud tubes, hollow-sounding wood, wings near windows
Critical $3,000-$15,000+
Rodent droppings or evidence of infestation Check attic, basement, cabinets; can damage wiring
Serious $500-$3,000
Suspected asbestos materials (pre-1980s homes) Popcorn ceilings, old insulation, floor tiles; test before renovating
Serious $1,500-$10,000+
Lead paint risk (pre-1978 homes) Especially concerning if you have young children
Moderate $8,000-$15,000
Radon concerns (varies by Texas location) Less common in DFW but worth testing, especially with basement
Moderate $800-$2,500

When to Walk Away (No Questions Asked)

Some issues are so serious that no price reduction makes them worth the risk.

Seller Won't Allow Inspection

No reputable seller refuses inspections. This is a massive red flag indicating they're hiding something significant.

Title Issues or Liens

Unresolved liens, boundary disputes, or clouded title can follow you for years. Let the seller fix it first.

Major Foundation Failure

Active foundation issues (bowing walls, major cracks, ongoing movement) often cost more than quoted and return.

Extensive Mold Throughout

Large-scale mold remediation is expensive, disruptive, and can indicate underlying moisture issues that persist.

Undisclosed Major Flood History

If you discover the home flooded and it wasn't disclosed, walk away. What else are they hiding?

"Too Good to Be True" Pricing

Extremely below-market prices usually mean extremely above-market problems. Trust your gut.

The Inspection Negotiation Secret

Red flags aren't just problems, they're negotiating leverage. A $15,000 roof issue doesn't mean you walk away. It means you ask for $15,000 off the price, a seller credit, or for the seller to fix it before closing. Knowledge is negotiating power.

Key Takeaways

  • Not all red flags are deal-breakers, many are negotiation opportunities for price reductions or repairs
  • Critical issues (foundation, electrical, structural) require professional inspection before proceeding
  • Track and compare red flags across multiple properties to make informed decisions
  • Estimated repair costs help you negotiate intelligently and budget accurately
  • Walk away without hesitation if seller refuses inspection or has undisclosed major issues

Get Expert Eyes on Your Findings

Our verified network of agents and inspectors can help you understand what red flags really mean and how to negotiate

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