BuildZoom is the incumbent in construction data — massive coverage, enterprise-grade, but built for bulk-file customers and procurement teams. PermitStack is built for developers who need a live REST API, transparent pricing, and Python SDK — without a sales call.
API key in 2 minutes. Published Python SDK. Cancel anytime.
PermitStack is a live REST API — sign up, get a key, make requests. BuildZoom's primary data product is bulk file delivery for enterprise customers; there's no self-serve developer API or published SDK. If you're building an application, PermitStack integrates in minutes.
PermitStack publishes every tier price on the site: Free, $49, $149, $499. You can sign up and start paying without ever talking to a human. BuildZoom requires a sales conversation to get any pricing — standard enterprise procurement territory.
BuildZoom claims 350M+ permits across 2,400 jurisdictions with 25+ years of history — it's the coverage leader. PermitStack focuses on 54 high-volume metros (15.6M+ permits) with daily updates. If you need national bulk coverage, BuildZoom wins; for the top metros with modern API access, we do.
Side-by-side comparison based on what actually matters for developers and small teams evaluating these platforms. All BuildZoom data points are from their public product and marketing pages as of April 2026.
| Feature | PermitStack | BuildZoom |
|---|---|---|
| Entry price | Free → $49/mo | "Contact sales" |
| Free tier | ✓1,000 requests/day, no card | —No public free tier |
| Primary access method | REST API (live) | Bulk data files |
| Signup → first API call | ~2 minutes (email verification) | Sales cycle (days/weeks) |
| Public pricing tiers | ✓$0 / $49 / $149 / $499 | —Not published |
| Data refresh | Daily (3 AM UTC) | Updated feeds (enterprise tier) |
| Official Python SDK | ✓pip install permitstack |
—No official SDK |
| Interactive API docs | ✓OpenAPI / Swagger UI | —No public API docs |
| U.S. jurisdiction coverage | 54 cities / 27 states | 2,400+ jurisdictions |
| Total permits indexed | 15.6M+ (last ~10 years) | 350M+ (25+ years) |
| Historical depth | ~10 years typical | 25+ years |
| Contractor records | Via /v1/contractors endpoints | 6M+ with reviews & licenses |
| Self-serve cancellation | ✓Stripe Customer Portal | Contact account manager |
| Long-term contract required | No — month-to-month | Annual typical |
| Webhooks | ✓From $149/mo | Not a standard product |
| Bulk data exports | ✓Parquet, weekly from $149 | ✓Core product offering |
| AI enrichment | ✓Claude-based parsing | ✓ML classification |
BuildZoom product and access details sourced from publicly available pages on buildzoom.com and buildingpermitdata.org as of April 19, 2026. PermitStack is an independent company and is not affiliated with BuildZoom or its parent entities. All trademarks belong to their respective owners.
BuildZoom's data products are sold through enterprise contracts that require contacting their sales team. For a developer prototyping a feature over a weekend, that's a non-starter. PermitStack gives you an API key after an email verification — the same afternoon you hear about it.
If your application needs to look up permits by address, city, or contractor on demand — for example, to enrich a real-estate listing at view time — a bulk file isn't the right shape. PermitStack's REST API returns clean JSON in under 100ms. BuildZoom's model assumes you'll ETL their feeds into your own warehouse first.
pip install permitstack gets you a typed Python client with sync and async support, automatic retries, and pagination built in. BuildZoom does not publish an official SDK — developers resort to HTTP scraping or third-party Apify actors, which are neither stable nor officially supported.
PermitStack publishes every price. Developer: $49/month. Startup: $149/month. Growth: $499/month. You pick a tier, enter a card, done. BuildZoom's pricing isn't published — every evaluation requires a sales conversation, and small teams often discover the minimum contract is 10x their intended budget.
The difference between "hit the API" and "go get approval to purchase a data feed, set up SFTP delivery, ingest into a warehouse, then query":
pip install permitstack
from permitstack import Permitstack
with Permitstack(api_key="pk_your_key") as client:
# Search solar permits in Austin, last 12 months
result = client.permits.search_permits(
city="Austin",
state="TX",
category="SOLAR",
)
for permit in result.results:
print(permit.address, permit.estimated_value, permit.contractor_name)Prefer a raw HTTP call? Same request works as curl -H "X-API-Key: pk_..." "https://api.permit-stack.com/v1/permits/search?city=Austin&state=TX&category=SOLAR"
We'd genuinely recommend BuildZoom for those use cases. PermitStack is optimized for the developer-first scenario: a team that wants to ship a product feature this week, not start a 3-month data vendor evaluation. Both models are valid — they just target different customers.
BuildZoom is primarily an enterprise data vendor that also runs a contractor marketplace. Their data delivery focuses on bulk files and requires contacting sales to get pricing. PermitStack is a developer-first REST API with transparent pricing from $49/month, self-serve signup, and a published Python SDK (pip install permitstack). Choose PermitStack if you're building an application and want to start in minutes; choose BuildZoom if you need national bulk data with 25-year history and are ready for enterprise procurement.
BuildZoom claims broader national coverage with 350M+ permits across 2,400 jurisdictions and 25+ years of history. PermitStack currently covers 54 U.S. cities with 15.6M+ permits — we prioritize the highest-volume metros with deep daily updates rather than breadth. If you need a specific city, check our live coverage page first; if you need truly national bulk coverage, BuildZoom is the incumbent.
BuildZoom's primary data delivery is through bulk files (their Data Feed product) targeted at enterprise customers. There is no public REST API with self-serve signup or a published SDK. Developers looking for BuildZoom data have historically resorted to scraping tools. PermitStack is designed as a modern REST API with OpenAPI documentation, interactive docs at api.permit-stack.com/docs, and an official Python SDK available on PyPI.
Yes. The free tier includes 1,000 requests per day with no credit card required. You only need to verify your email to get an API key. Paid tiers ($49, $149, $499) are self-serve via Stripe with month-to-month cancellation. No sales calls, no MSAs, no procurement process.
Both platforms include contractor information. BuildZoom has deeper contractor licensure data (6M+ contractors with reviews, license details, marketplace integration). PermitStack provides contractor names and cross-referenced permit history within our 54 covered jurisdictions via the /v1/contractors endpoints. For enterprise-grade contractor licensure lookup across all states, BuildZoom has more depth.
No. PermitStack plans are month-to-month with self-serve cancellation via the Stripe Customer Portal. Annual plans offer a 17% discount. BuildZoom's enterprise contracts typically run annually and require negotiation through their sales team.
BuildZoom is a strong choice if you need national permit coverage (2,400+ jurisdictions), deep historical data (25+ years), bulk file delivery for data warehousing, contractor licensure data across all U.S. states, or if you're an enterprise buyer with established procurement processes. If your use case is "developer building an app that needs clean permit data via API in the top metros," PermitStack will typically be faster and cheaper to ship with.
PermitStack offers a published Python SDK on PyPI (pip install permitstack), full OpenAPI documentation at api.permit-stack.com/docs, interactive Swagger UI, and authentication via a standard X-API-Key header. Node and Go SDKs are in development. BuildZoom does not publish an official SDK or expose a developer-facing REST API — their data products are delivered as bulk files through enterprise contracts.
Sign up, verify your email, get an API key, make a request. No credit card, no call. Cancel from a self-serve portal whenever you want.