53,730 Commercial Alteration permits in Boston
Updated 7h ago via daily refresh. Commercial Alteration subset of the 980,100 total Boston permits indexed.
Permits indexed53,730Across Boston
RefreshDailyLast update 2026-05-24 02:00 ET
Cohort classifierLLM-1Field-level DQ flags inline
What this cohort covers
What counts as Commercial Alteration in Boston?
Commercial alteration permits cover the broad set of changes to existing commercial buildings — tenant improvements, additions, structural alterations, adaptive reuse, AND roofing/envelope work that doesn't trigger a separate sub-cohort. The highest-volume commercial cohort in most US metros because TI turnover + re-roofing cycles dominate filings against existing stock.
No demo commercial alteration permits in the current Boston sample — cohort grid populates from the live API at B1.6+.
Other cohorts in Boston
- Commercial MEP134,808
- Commercial Signage Permits4,777
- Commercial Demolition4,267
- Commercial New Construction513
- ADU-Qualifying Construction
- Civic Construction
- Commercial Pool Construction
- Commercial Shell-Only Construction
- Industrial New Construction
- Multifamily Alteration
- Multifamily New Construction
- Residential Alteration
- Residential Demolition
- Residential Foundation-Only
- Residential MEP
- Residential New (Single-Family)
- Temporary Construction Support
Commercial Alteration in other metros
FAQ
Frequently asked about commercial alteration permits in Boston
- How many commercial alteration permits are pulled in Boston each year?
- 53,730 commercial alteration permits are currently indexed for Boston. Volume varies year over year; PermitCore tracks both historical totals and current rolling-window activity.
- Where can I see the latest commercial alteration permits in Boston?
- The grid above shows the most recent commercial alteration permits in Boston, paginated 25 per page. For programmatic access — filter by cohort, by date range, by contractor — use the PermitCore API or download via the sandbox.
- How is the commercial alteration data in Boston refreshed?
- Boston permit data is refreshed daily from the city's open-data portal. Cohort classification is applied automatically via PermitCore's LLM-1 classifier; field-level data-quality flags surface inline so you can filter for clean rows.
- Can I export Boston commercial alteration permits?
- Yes — the free tier includes 5K rows of CSV export per month. Paid tiers expand to Parquet export, 50K-2M rows, and webhook delivery on new commercial alteration permit filings.
Custom delivery
Want Commercial Alteration in Boston permit data delivered to your CRM or warehouse?
Self-serve API tiers cover most use cases. If you need direct delivery to Salesforce, HubSpot, Snowflake, BigQuery, or a custom warehouse — tell us the shape and we'll scope a path. Replies within one business day.