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

34,103 residential 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 residential alteration permits in Detroit?

The board above ranks the contractors winning residential 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 residential 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 residential 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.

HomeDetroitResidential Alteration

Residential Alteration permits in Detroit

Classification: measured, indeterminate (n=100)

≈$984M in reliable permit value across 34,103 residential alteration filings in Detroit. The contractor leaderboard for this segment is rolling out.

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

refreshed Aug 30, 2026 · classified, not scraped

Classification scopeWe measured Residential Alteration in Detroit on 2026-06-24: 99 of 100 sampled permits were correctly classified (99.3%). At that sample size the 95% confidence interval is 94.6%–99.8%, which spans our ≥99% certification bar — so this cohort is not certified, and not shown to have failed. It is measured and indeterminate. The permits are shown; the classification is the part we stand behind hardest, and this is what we currently know about it.

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

Contractors winning Residential Alteration in Detroit

Ranked by permit volume · 34,103 filings, all time

The contractor leaderboard for Residential Alteration in Detroit is rolling out — 34,103 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 Residential 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 Residential 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 Residential 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 Residential Alteration digest.No account needed — new Residential Alteration permits across Detroit, once a day when something new lands. Unsubscribe anytime.

Market chartspoint-in-time snapshot

Permits by segment

Typical project size · residential alteration · Detroit$10K

middle 50% · across 34,021 valued permits

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

Other segments in Detroit

Residential Alteration in other metros

Browse Detroit another way

FAQ

Frequently asked about residential alteration permits in Detroit

How many residential alteration permits are pulled in Detroit each year?: 34,103 residential 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 residential alteration permits in Detroit?: The board above ranks the contractors winning residential 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 residential 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 residential 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.