Both are permit-data tools that can push you events when permits change. The difference is scope: SignedOff.io is webhook-first across a small set of jurisdictions, while PermitStack pairs webhooks with broad national coverage, a free tier, and a lower price floor.
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SignedOff.io is a legitimate webhook-first peer. If permit-status webhooks across its roughly 18 jurisdictions are exactly what you need, it does that job well. PermitStack also offers webhooks — plus a permit_events delta feed and an /alerts/ product — on top of about 552 active jurisdictions across 48 states and 58M+ permit records, refreshed daily. So the real question is breadth: if you need event coverage across many metros, a free tier to prototype, or a $19 price floor, PermitStack is the wider net. If you only need those ~18 jurisdictions, either works.
SignedOff.io is built around permit status webhooks; that's its core feature, and we won't pretend otherwise. PermitStack offers webhooks (POST /v1/webhooks) plus a permit_events delta feed and an /alerts/ product — event-driven, just across far more jurisdictions.
SignedOff.io advertises webhooks across roughly 18 jurisdictions (as of June 2026). PermitStack covers about 552 active U.S. jurisdictions across 48 states — plus 51 historical-archive jurisdictions — totaling 58M+ records.
PermitStack starts free (100 requests/day, no card) and paid plans begin at $19/month. SignedOff.io's publicly reported pricing starts around $49/month. Webhooks on PermitStack are included from the $49 Developer tier — at or below SignedOff.io's entry price.
Side-by-side on the factors that matter when you're choosing an event-driven permit feed. SignedOff.io figures are publicly reported as of June 2026.
| Feature | PermitStack | SignedOff.io |
|---|---|---|
| Permit webhooks | ✓Yes (POST /v1/webhooks) | ✓Yes — core feature |
| Status-change events | ✓permit_events delta feed + /alerts/ | ✓Permit status events |
| U.S. jurisdiction coverage | ~552 active / 48 states | ~18 jurisdictions |
| Total permit records | 58M+ | Not published |
| Entry price | Free → $19/mo (Indie) | ~$49/mo (publicly reported) |
| Free tier | ✓100 requests/day, no card | —Not published |
| Webhooks included from | $49/mo (Developer) — plus permit_events on every paid tier | ~$49/mo entry (publicly reported) |
| Data refresh | Daily (ingest 03:00 UTC) | Event-driven (not published) |
| Full search API | ✓zip, city, state, address, radius, category, status, value, contractor | —Webhook-focused |
| CSV export | ✓GET /v1/permits/export | —Not published |
| Per-address history | ✓GET /v1/property/history | —Not published |
| Permit categories | ~20 (solar, roofing, HVAC, electrical…) | Not published |
| Honest data labeling | ✓data_status per jurisdiction (active / archive / frozen) | —Not published |
| Self-serve, no sales call | ✓Stripe, email verification | Not published |
SignedOff.io pricing, jurisdiction count, and feature details are publicly reported as of June 2026; "Not published" means we found no public figure and chose not to invent one. PermitStack figures reflect live platform metrics on 2026-06-11. PermitStack is an independent company and is not affiliated with SignedOff.io. All trademarks belong to their respective owners.
Four reasons teams that started with a webhook-only tool end up wanting more.
Webhooks are only as useful as the geography they cover. If your prospects, properties, or projects span more than a handful of cities, ~18 jurisdictions runs out fast. PermitStack's permit_events delta feed and webhooks operate across about 552 active jurisdictions in 48 states — including statewide solar feeds like CA (~2.7M permits) and NY (~550K).
You shouldn't have to pay before you've confirmed the data fits. PermitStack's free tier gives you 100 requests/day with no credit card — enough to build and test your event-handling code, validate field mappings, and prove the use case before you spend a dollar.
Events tell you what changed; a real search API tells you everything else. PermitStack pairs webhooks with GET /v1/permits/search (zip, city, state, address, lat/lng radius, category, status, contractor, value), CSV export, and per-address history — so you can backfill, enrich, and reconcile, not just react to pushes.
Every jurisdiction carries a data_status flag (active / historical_archive / frozen) exposed in the API and on our coverage page, so you always know how fresh a feed is. Ingestion runs daily at 03:00 UTC and rejects future-dated records. Sign-up is self-serve via Stripe — no demo, no MSA, no rep in your inbox.
Pull just the permits that were added or changed, then register a webhook to get pushed the next ones:
We're not going to pretend PermitStack wins every comparison. SignedOff.io is a legitimate, webhook-first peer in our price range, and it's clearly built by people who care about permit status events. If the roughly 18 jurisdictions it covers happen to be exactly the ones you care about — and a tightly focused, event-only product is what you want — it's a perfectly good choice, and you may prefer its narrower surface area.
PermitStack's case is breadth without giving up events: webhooks plus a permit_events delta feed and an /alerts/ product, layered on about 552 active jurisdictions, 58M+ records, a free tier, and a $19 price floor. If you need event coverage across many metros, want to prototype before paying, or value honest per-jurisdiction freshness labeling, that's the gap we fill. Either way, you can verify it yourself in minutes — no sales call required.
Webhooks, coverage, pricing, and the honest trade-offs.
Yes. PermitStack offers permit webhooks via POST /v1/webhooks, plus a permit_events delta feed (GET /v1/permits/events) that surfaces newly added and changed permits, and an /alerts/ product for saved-search notifications. Webhooks are included on paid plans starting at $49/month (the Developer tier) — at or below SignedOff.io's entry price. See our guide to real-time permit alerts and webhooks for setup.
As of June 2026, SignedOff.io publicly advertises permit status webhooks across roughly 18 jurisdictions. PermitStack covers about 552 active U.S. jurisdictions across 48 states, plus 51 historical-archive jurisdictions, for a total of 58M+ permit records. Check our live coverage page to confirm a specific city.
PermitStack's paid plans start at $19/month (Indie), below SignedOff.io's publicly reported ~$49 entry tier — and PermitStack also offers a free tier with 100 requests/day and no credit card. You don't give up event-driven workflows by choosing the lower floor: the permit_events delta feed is available across paid tiers, and webhooks are included from the $49 Developer plan. See full pricing.
SignedOff.io is a webhook-first product focused on permit status events across roughly 18 jurisdictions. PermitStack is a broad permit data platform — about 552 active jurisdictions and 58M+ records refreshed daily — that also offers webhooks, a permit_events delta feed, and an /alerts/ product. The trade-off is focus versus breadth: SignedOff is narrow and event-centric; PermitStack is wide-coverage with event features layered on.
Yes. GET /v1/permits/events returns deltas — permits that were newly added or whose fields (including status) changed — so you can poll for changes, and webhooks can push those events to your endpoint. Statuses tracked include filed, issued, in_progress, final, expired, cancelled, revoked, and unknown.
PermitStack ingests from city open-data portals daily, with the main ingest at 03:00 UTC. Permits that appear in a city's public portal are typically available in the API within 24 hours, and future-dated records are rejected during ingestion. Each jurisdiction also carries a data_status flag (active / historical_archive / frozen) so you always know how current a feed is.
Yes. PermitStack is fully self-serve via Stripe. The free tier requires only email verification — no credit card and no sales call. Paid plans are month-to-month and cancellable from the Stripe Customer Portal. You can have a working API key and your first event query running in a couple of minutes.
Get a PermitStack API key in 2 minutes. Wire up the permit_events feed or a webhook, then watch changes roll in across ~552 jurisdictions — not 18.
100 free requests per day. No credit card. No sales call.