How many commercial alteration permits are pulled in Detroit each year?

5,230 commercial alteration permits are currently indexed for Detroit. 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 Detroit?

The board above ranks the contractors winning commercial alteration permits in Detroit by volume and reliable value. To browse the underlying permit filings themselves — filter by cohort, by date range, by contractor — use the PermitCore API or the Market Explorer.

How is the commercial alteration data in Detroit refreshed?

PermitCore rebuilds the Detroit index nightly. The underlying municipal source publishes on its own cadence, which varies by jurisdiction, so each page stamps its own freshness (the "as of" date) rather than promising a fixed interval — and a stale source is marked as such. Segment classification is applied automatically by PermitCore's classification engine; field-level data-quality flags surface inline so you can filter for clean rows.

Can I export Detroit commercial alteration permits?

Yes — the free tier includes 5,000 exports / month (CSV or Parquet); one bulk export counts as 1 export regardless of row count. Pro removes the cap with unlimited exports and full-data browse across all jurisdictions.

HomeDetroitCommercial Alteration

Commercial Alteration permits in Detroit

Classification: not yet measured

≈$2.2B in reliable permit value across 5,230 commercial alteration filings in Detroit. The contractor leaderboard for this segment is rolling out.

Browse the filings in the Market Explorer →Recent commercial alteration filings

refreshed Aug 30, 2026 · classified, not scraped

Classification scopeClassification precision for Commercial Alteration in Detroit has not yet been measured against our ≥99% certification bar. The permits are shown; treat the cohort boundary as provisional until certification.

Classification coverageOf 234,373 permit records we hold for Detroit, 42,727 (18.2%) carry the work markers our cohort rules need — the rest are published without a residential/commercial signal we can classify on. Of those, 40,519 (94.8%) are placed in a cohort. Certification measures whether that placement is right — not how much of the corpus reaches it.

Find Commercial Alteration contractors near your branchEnter your address — see who’s pulling these permits in your radius.

Contractors winning Commercial Alteration in Detroit

Ranked by permit volume · 5,230 filings, all time

The contractor leaderboard for Commercial Alteration in Detroit is rolling out — 5,230 classified filings are already indexed. Browse them in the Market Explorer →

Live segments in Detroit

90-day movers

Momentum not yet available for this segment.

What’s in the full list

Every contractor ranked by reliable value
Recent projects + permit-level detail per contractor
A daily email when a new filing lands
CRM-ready export — enriched + parcel-joined

See your territory →

Free to explore — no card.

Why this list is real

These contractors are ranked from classified permits, not keyword scrapes. We read each permit’s work-type, scope, and occupancy fields to place it in Commercial Alteration — so a filing that looks like a generic alteration lands in the right segment, and the ranking reflects real work. When the fields don’t support a confident call we mark it Unclassified — we never force a wrong segment to pad a contractor’s count.

How we classify →

Alert me when Commercial Alteration momentum crosses a threshold.Single-window signal (last 90 days vs the prior 90) — at most once a week, no account.

Get the full Commercial Alteration target list for Detroit.

Every ranked contractor, recent projects, and a daily email when new permits land — scoped to your segment and metro.

See your territory →Pro — $89/mo · self-serve

Keep tabs on your Detroit territory — a weekly Commercial Alteration digest.No account needed — new Commercial Alteration permits across Detroit, once a day when something new lands. Unsubscribe anytime.

Market chartspoint-in-time snapshot

Permits by segment

Typical project size · commercial alteration · Detroit$26K

middle 50% · across 5,039 valued permits

Aggregate, point-in-time — free to view. Export the underlying numbers with Pro.

Other segments in Detroit

Commercial Alteration in other metros

Browse Detroit another way

FAQ

Frequently asked about commercial alteration permits in Detroit

How many commercial alteration permits are pulled in Detroit each year?: 5,230 commercial alteration permits are currently indexed for Detroit. 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 Detroit?: The board above ranks the contractors winning commercial alteration permits in Detroit by volume and reliable value. To browse the underlying permit filings themselves — filter by cohort, by date range, by contractor — use the PermitCore API or the Market Explorer.
How is the commercial alteration data in Detroit refreshed?: PermitCore rebuilds the Detroit index nightly. The underlying municipal source publishes on its own cadence, which varies by jurisdiction, so each page stamps its own freshness (the "as of" date) rather than promising a fixed interval — and a stale source is marked as such. Segment classification is applied automatically by PermitCore's classification engine; field-level data-quality flags surface inline so you can filter for clean rows.
Can I export Detroit commercial alteration permits?: Yes — the free tier includes 5,000 exports / month (CSV or Parquet); one bulk export counts as 1 export regardless of row count. Pro removes the cap with unlimited exports and full-data browse across all jurisdictions.