High-Volume Plaintiff-Side Counsel and Single-Appearance Eviction Cases in Philadelphia

TL;DR

This study analyzes how high-volume plaintiff counsel influences eviction case filings and outcomes in Philadelphia, revealing organizational effects on filing patterns rather than direct impact on case success.

Contribution

It provides empirical evidence that high-volume counsel mainly affects filing scale and procedural patterns, not individual case outcomes.

Findings

High-volume counsel increases filings and buildings reached by 2-5%

No significant difference in default or judgment outcomes for single-appearance cases

Organizational effects are observed after counsel switches to high-volume practices

Abstract

Among 755,004 Philadelphia landlord--tenant records filed during 1969-2022, 396,163 residential cases involve tenants who appear exactly once in the observed docket. In unadjusted comparisons, single-appearance cases handled by high-volume plaintiff-side counsel are more likely to advance to the writ-of-possession and served-writ stages, but no more likely to end in default. Comparisons within the same plaintiff, and within the same plaintiff at the same property, show no broad premium on adverse case outcomes such as default, judgment, or fees. The clearer pattern is organizational: after a plaintiff adopts or switches into high-volume counsel, monthly filings rise by about 2-5% and the number of distinct buildings reached rises by a similar margin; near the prior-year top-10 attorney threshold, cases display local differences in default and enforcement; and continuances under specialist counsel are more closely linked to default. Non-flat pre-treatment trends and imprecise reverse-direction estimates from attorney exits restrict the strength of any causal claim. High-volume plaintiff-side counsel therefore functions as a mechanism of filing scale and procedural sequence, not as a uniform escalator of case outcomes or as a cause of any individual tenant becoming single-appearance.