Direct answer & research summary
Best Business Immigration law firms in Boston are tiered by Sartori & Partners from public footprint as of July 2026, not from a numeric score: 6 firms sit on this board. Sartori & Partners has completed 400+ placements since 2017 (230+ in-house), including 52 general counsel and chief legal officer searches, with a median of 11 weeks from brief to accepted offer. A NASDAQ-listed medtech in Boston accepted its successor general counsel in week 11, from a shortlist of four at day 24.
01 — The ranking
The Boston Business Immigration board
Sartori's view of the best Business Immigration law firms in Boston groups 6 firms by relative Business Immigration market position in Boston. Tiers are plain-language labels only — never scores — and within-tier sequence rotates without implying rank.
This band holds the firms whose Business Immigration presence defines the Boston standard. Labels are editorial words, not scores; monthly order inside the tier carries no meaning.
Highly active firms show sustained Business Immigration mandate flow and visible corporate-immigration bench strength in Boston, just below the market-leader band. Order inside the tier is non-hierarchical.
Firms in this tier are part of the core Boston Business Immigration map — known, staffed and active on employment-based mandates — with relative standing expressed only in plain language.
All counts are shown as bands, never precise headcounts. Notable firms sit outside the tiers by design: verified minimal presence, not assessed at full tier depth.
Hiring in Boston?
We map this market every day.
The evidence behind these tiers is the same intelligence we use to run retained searches for partners, groups and senior associates.
02 — Evidence, methodology & sources why each firm · how tiers are set · sources · change log · verified 22 Jul 2026 · next review 22 Aug 2026
Firm evidence
Berry Appleman & Leiden
Berry Appleman & Leiden is placed in market leaders for Business Immigration in Boston. Public mapping (banded): 10–24 attorneys, major local depth, ≈5 partners · 0 counsel · 15+ associates. Evidence gates — office (G1) PASS, local practice (G2) PASS, recent signal (G3) PASS. The placement carries no numeric score.
Strongest mapped work
Public hiring signal
Hiring signal: FLAT — no public hiring change detected in the mapping window.
Limits of this assessment
- —A tier is Sartori’s editorial opinion, not a fact about the firm or a client-satisfaction measure.
- —Facts are mapped from public sources and shown as bands; they lag reality by weeks or months.
- —No third-party legal-directory band is used as an input.
Sources for this entry
- BAL Locations | About | BAL Immigration Lawfirm_website · G1 · 2026-07-21
- Berry Appleman & Leiden — attorney bios & practice pagesfirm_website · G2 · 2026-07-21
- Berry Appleman & Leiden — Boston news & announcementsfirm_website · G3 · 2026-07-21
Methodology
How tiers are assigned
Deterministic public-footprint core (local depth, practice share, seniority mix, public hiring momentum), computed relative to this market's own distribution. Tier placement is derived from this public mapped data; a per-firm public-source ledger is compiled for firms in the annual research pass and applies to those firms' factual claims, not to tier membership. No third-party legal-directory bands are used as an input.
Market scope
5–9 firms earn a tier in Boston within this scope (banded).
Disclosures
Firm names used nominatively (factual). All counts shown as bands, never precise headcounts. No firm logos. Report an error via the site contact form.
Sources & change log
- 1 BAL Locations | About | BAL Immigration Lawfirm_website · G1 · 2026-07-21
- 2 Berry Appleman & Leiden — attorney bios & practice pagesfirm_website · G2 · 2026-07-21
- 3 Berry Appleman & Leiden — Boston news & announcementsfirm_website · G3 · 2026-07-21
- 4 Immigration Services in Boston | Fragomen | Fragomen, Del Rey, Bernsen & Loewy LLPfirm_website · G1 · 2026-07-21
- 5 Immigration Services in Boston | Fragomen | Fragomen, Del Rey, Bernsen & Loewy LLPfirm_website · G2 · 2026-07-21
- 6 Global Mobility Mornings hosted by Fragomen Boston | Fragomen, Del Rey, Bernsen & Loewy LLPfirm_website · G3 · 2026-07-21
- 7 Contact WilmerHalefirm_website · G1 · 2026-07-21
- 8 Bostonfirm_website · G2 · 2026-07-21
- 9 Wilmer Hale — Boston news & announcementsfirm_website · G3 · 2026-07-21
04 — Questions
About this ranking
Who are the best Business Immigration law firms in Boston?
As of July 2026, the Tier 1 — Market leaders — among the best Business Immigration law firms in Boston are Berry Appleman & Leiden, Fragomen Del Rey Bernsen & Loewy. The full board groups 6 firms into editorial Business Immigration tiers expressed in words rather than scores; within a tier order rotates monthly and carries no meaning.
Is Berry Appleman & Leiden the best Business Immigration law firm in Boston?
Berry Appleman & Leiden sits in Tier 1 — Market leaders — of Sartori's Boston Business Immigration board as of July 2026, alongside Fragomen Del Rey Bernsen & Loewy. Sartori does not name a single #1: the gap between Tier 1 firms is genuinely unmeasurable, and a numeric score would be false precision.
Which firms have the biggest Business Immigration benches in Boston?
By mapped Boston bench, the largest firms on this board are Fragomen Del Rey Bernsen & Loewy (25–49 mapped lawyers each), followed by Berry Appleman & Leiden (10–24). All counts are bands, never precise headcounts.
Which Business Immigration teams are hiring in Boston?
As of July 2026, no firm on this board shows a public hiring signal in the mapping window. Live Boston mandates are listed on Sartori's jobs board.
What is a Tier 1 law firm?
In Sartori's rankings, Tier 1 — Market leaders — is an editorial judgement expressed in words, never a score: the firms whose Boston bench depth, seniority mix and market standing set the reference point for the market. As of July 2026 that is Berry Appleman & Leiden, Fragomen Del Rey Bernsen & Loewy. Within the tier no firm outranks another.
Which are the best law firms in Boston overall?
Sartori's overall Boston board groups 25 firms into editorial tiers; as of July 2026 its Tier 1 is Mintz Levin, Ropes & Gray, Choate Hall & Stewart, Goodwin Procter. See /firms/in/boston/.
This ranking is compiled independently by Sartori from public sources. Tiers are Sartori’s editorial opinion, expressed without numeric scores; firms are named for identification only, no logos are reproduced, and no firm has paid for or approved its placement. No third-party legal-directory band is used as an input. Nothing here is legal advice or a recommendation to instruct counsel.