Zillowmaxxing case library

Seven frozen audits for proving the product story.

These are saved production premium outputs rendered offline for marketing, QA, and pitch material. They do not call paid providers.

7 permanent fixtures Generated 2026-06-03 RentCast conserved: no live calls Public view anonymized

ClearComp™

The hyperlocal comp view: start with the full comparable-sales pool, then show what changes when comps outside the subject municipality are removed.

CEDC

Compounded Exponential Discrepancy Chain: a score for whether stale facts, sale anchoring, valuation gaps, and history signals appear to reinforce each other.

patient zero

Patient Zero: cross-municipality comp drag plus neighbor divergence

Maplewood, NJ Patient Zero Sample · exact address hidden in public sample

This is the flagship story: same-municipality comps are dramatically higher than the full comp pool, the neighbor gap is enormous, and sale anchoring makes the suppression narrative coherent.

Zestimate$654,900
AVM Avg$735,506
ClearComp$827,580
Diagnosisdoom looped

Estimate Stack

SourceValue
Redfin$853,111
Homes.com$635,000
Realtor.com$718,406
RentCast excluded$591,000

ClearComp™

cross_muni_drag_detected
All comps$446,447
Same municipality$827,580
Impact+$381,133 / +85.4%
Comps kept / excluded5 / 14
Excluded municipalitiesIrvington, Newark, South Orange Village Township
city border

Municipality edge case: Sparta address, Byram reality

Sparta, NJ City Border Sample · exact address hidden in public sample

This case shows why ClearComp is useful even when the top-line Zestimate is close to the AVM stack: the comp geography tells a separate story.

Zestimate$367,400
AVM Avg$372,449
ClearComp$402,993
Diagnosisaligned

Estimate Stack

SourceValue
Redfin$420,172
Homes.com$324,726
RentCast excluded$654,000

ClearComp™

cross_muni_drag_detected
All comps$369,271
Same municipality$402,993
Impact+$33,722 / +9.1%
Comps kept / excluded8 / 10
Excluded municipalitiesByram Township, Andover
facts mismatch control

Clean ClearComp control with a property-facts mismatch

Sheboygan, WI Facts Mismatch Control Sample · exact address hidden in public sample

ClearComp correctly stays quiet in a single-municipality market, while the audit still catches a large square-footage/facts discrepancy.

Zestimate$677,400
AVM Avg$634,053
ClearComp$549,245
Diagnosisaligned

Estimate Stack

SourceValue
Homes.com$616,009
Realtor.com$652,096
RentCast excluded$404,000

ClearComp™

clean
All comps$549,245
Same municipality$549,245
Impact$0 / 0%
Comps kept / excluded20 / 0
Excluded municipalitiesNone
aligned control

Aligned Zestimate with a smaller property-facts mismatch

Sheboygan, WI Aligned Control Sample · exact address hidden in public sample

The AVM stack is basically aligned with Zillow, so this should be a conservative aligned-with-context case rather than a dramatic doom-loop finding.

Zestimate$366,300
AVM Avg$370,479
ClearComp$295,939
Diagnosisaligned

Estimate Stack

SourceValue
Redfin$399,857
Realtor.com$341,100
RentCast excluded$281,000

ClearComp™

clean
All comps$295,939
Same municipality$295,939
Impact$0 / 0%
Comps kept / excluded20 / 0
Excluded municipalitiesNone
sale anchor

Sale-anchored case with one high independent AVM

Madison, WI Sale Anchor Sample · exact address hidden in public sample

This is the strongest new non-Parker suppression story: Zillow is close to a recent sale while one independent AVM sees a much higher ceiling.

Zestimate$415,000
AVM Avg$454,791
ClearComp$381,938
Diagnosissuppression signs

Estimate Stack

SourceValue
Redfin$509,682
Realtor.com$399,900
RentCast excluded$495,000

ClearComp™

clean
All comps$378,919
Same municipality$381,938
Impact+$3,019 / +0.8%
Comps kept / excluded18 / 2
Excluded municipalitiesMiddleton
matched pair

Matched-pair neighbor case: aligned relationship

Metuchen, NJ Matched Pair Sample · exact address hidden in public sample

The neighbor comparison behaves well: two adjacent homes have a normal relative gap, and ClearComp detects only a modest municipality adjustment.

Zestimate$731,600
AVM Avg$665,652
ClearComp$671,229
Diagnosisaligned

Estimate Stack

SourceValue
Redfin$721,338
Homes.com$665,618
Realtor.com$610,000
RentCast excluded$679,000

ClearComp™

clean
All comps$651,822
Same municipality$671,229
Impact+$19,407 / +3%
Comps kept / excluded15 / 5
Excluded municipalitiesEdison
matched pair clearcomp

Matched-pair neighbor case with modest Edison comp drag

Metuchen, NJ Matched Pair ClearComp Sample · exact address hidden in public sample

ClearComp finds a real but modest cross-municipality drag from Edison comps while the top-line Zestimate is still close to other public AVMs.

Zestimate$761,600
AVM Avg$740,863
ClearComp$624,513
Diagnosisaligned

Estimate Stack

SourceValue
Redfin$732,026
Realtor.com$749,700
RentCast excluded$666,000

ClearComp™

cross_muni_drag_detected
All comps$587,114
Same municipality$624,513
Impact+$37,399 / +6.4%
Comps kept / excluded13 / 7
Excluded municipalitiesEdison