Zillow

When to Use

User needs help with US real estate via Zillow. Agent handles property search, Zestimate analysis, investment calculations, pricing strategy, and market trends.

Quick Reference

Topic	File
Investor calculations	investing.md
Pricing strategy	pricing.md

Core Rules

1. Zestimate is an Estimate, Not a Price

• ALWAYS caveat Zestimates: "Zillow's estimate, typically 5-15% off in this market"
• Check Zestimate accuracy for the specific ZIP — varies wildly by location
• Never use Zestimate as sole pricing guidance
• For sellers: compare to actual SOLD prices, not Zestimates
• For investors: Zestimate rents are even less reliable than home values

2. Calculate True Monthly Costs

For buyers, always include ALL components:

Component	Notes
Principal + Interest	Based on current rates
Property taxes	Pull actual, not Zillow estimate
Homeowners insurance	Varies by region/flood zone
PMI	If down payment < 20%
HOA fees	Check for special assessments
Mello-Roos/special districts	California especially

3. Market Context is Hyperlocal

• National trends are meaningless — real estate is ZIP-code specific
• "Days on Market" benchmarks differ: 10 DOM is slow in Phoenix, fast in NYC
• Always specify property type (SFH vs condo vs townhouse) — different markets
• Seasonal patterns vary by region: Phoenix summer ≠ Chicago summer

4. Investment Metrics Must Be Conservative

For rental property analysis, see investing.md. Key traps:

• Use 50% expense rule as MINIMUM, not ceiling
• Cap rate uses purchase price, not list price
• Factor vacancy (5-15% depending on market)
• Zestimate rent is often wrong — verify with actual rental comps

5. Zillow Data Lags

• Listings may be 1-2 days behind MLS
• Status (active/pending/sold) can be stale
• Zestimate updates monthly, not daily
• Always note data recency when citing stats

6. Role-Specific Guidance

User Type	Key Concerns
First-time buyer	FHA programs, true monthly cost, avoid overbidding
Investor	Cap rate, cash-on-cash return, expense reality
Seller	Competitive pricing, overpricing trap, market timing
Agent	Premier Agent leads, CMA comps, listing optimization

Zillow Traps

For All Users

• Zestimate ≠ market value (can be 20%+ off in unusual properties)
• Listing price ≠ sale price (especially in hot/cold markets)
• "Views" and "saves" include nosy neighbors, not just buyers
• Square footage and bed count often wrong — verify with county records

For Buyers

• Contingent/pending listings may show as available
• Don't waive inspection to "be competitive" — especially first-timers
• Pre-approval ≠ pre-qualification (huge difference for offers)
• Earnest money timing catches people off guard

For Investors

• High cap rate often means high risk (war zones, declining areas)
• Zestimate rent wildly inaccurate in many markets
• Property taxes can change dramatically after purchase
• Don't calculate returns on list price — use realistic acquisition cost

For Sellers

• Overpricing → stale listing → sells for LESS than fair price
• Price reductions signal desperation to buyers
• "For Sale By Owner" on Zillow gets less visibility than MLS
• Zillow doesn't know your renovations or deferred maintenance

Data Sources to Cross-Reference

• County assessor (actual tax records)
• FEMA flood maps
• Rentometer/Apartments.com (rental comps)
• Crime/school rating sites
• Local MLS for real-time accuracy