Methodology
How we calculate closure rates and which permits we count for Henderson.
What is a closure rate?
When a contractor pulls a building permit in Henderson, an inspector needs to verify the work was completed correctly before the permit can be closed. A closure rate measures the percentage of an applicant’s permits that have been properly closed:
The 365-day eligibility rule
A contractor who pulled a permit last month hasn’t had time to complete the work yet. To avoid penalizing recent activity, we only count permits issued more than 365 days ago when calculating closure rates.
Permits issued within the last year still appear in the data but are dimmed in the table and not factored into the rate.
Data source
Permits come from the City of Henderson Community Development department, published as Socrata dataset fpc9-568j on the City of Henderson Open Data portal. The dataset covers permits from 2017 to present and is refreshed daily. As of early 2026 the dataset contains approximately 260K permits across all departments.
Included permit types
We include building permit types (BLDG prefix) representing inspectable construction work, grouped into five categories:
| Category | Permit Types |
|---|---|
| Residential | Dwelling, Appliance Replacement, Residential MP&E, Prefabricated Structures |
| Commercial | Commercial Building, Commercial MP&E, Multi-Fam Residential, Multi-Family MP&E, Restaurant, Retail Sales, Office Professional, Office Medical, Office/Warehouse/Industrial, Industrial Building, Assembly, Hospital/Institution, Casino, Church/Religious, Day Care, Educational, Hotel, Medical/24HR Care, Public Construction, Parking Garage, Warehouse, and others |
| Solar | Photovoltaic |
| Pool & Spa | Pool and Spa, Water Feature |
| Structural | Wall, Non-Building Structure, Grading, Park, Structural Frame |
Non-building permit types — including Fire department permits, Public Works permits (Barricade, Excavation, Civil Improvements), Signs, Cell Tower, Certificate of Occupancy, Report, and Utility permits — are excluded from closure rate calculations.
Status mapping
| Status | Classification |
|---|---|
| Done | Counted as closed |
| Active - Issued | Counted as open |
| Expired | Counted as open — permit expired without closing |
Pending, Template, Hold, Awaiting Report/Inspection, Awaiting Application, Partially Constructed, Incomplete Submittal, and Withdrawn statuses are excluded as pre-issuance or voided records.
Applicant identification
Henderson’s dataset provides a Professional Name field identifying the licensed contractor or professional associated with each permit, with approximately 71% fill rate across all permits.
Sentinel values such as “N/A” and “OWNER/BUILDER” are treated as blank. Permits without a professional name are excluded from the leaderboard but still count toward address-level statistics.
Address and geographic data
Addresses are assembled from four separate fields (street number, pre-direction, street name, street type). ZIP codes are available from a dedicated field. Latitude and longitude coordinates are provided via GISX/GISY fields.
Valuation data
Henderson publishes a Valuation Total field representing the declared project valuation. This data is included in the permit table where available (approximately 42% fill rate).
Leaderboard criteria
The leaderboard applies two additional filters:
- Minimum 20 rated permits — avoids surfacing statistically insignificant data.
- Active in the last 3 years — prevents the list from being populated by defunct companies.
The leaderboard can be filtered by permit type (e.g., Residential, Commercial, Solar, Pool & Spa, Structural). When filtered, both thresholds apply only to permits of the selected type.
Median comparison
On applicant detail pages, each closure rate is compared to the median closure rate across all leaderboard-eligible applicants in the same category. This gives context — a 50% closure rate means something different in a category where the median is 40% versus one where it’s 80%.
Medians are calculated from the same pool of applicants who meet the 20-permit minimum threshold.
Data source
All data comes from the Approved Building Permits dataset on City of Henderson Open Data. The dataset is refreshed nightly.
Limitations
This site shows permit closure data. It does not evaluate the quality of anyone’s work. There are legitimate reasons a permit may remain open:
- Client non-cooperation — the property owner may fail to schedule the final inspection or grant access.
- Administrative backlog — work may be inspected and approved but not yet updated in the system.
- Project delays — financing, design changes, supply chain issues, or other factors outside the applicant’s control.
- Multi-phase projects — large commercial projects may legitimately take years to complete.
- Permit holder vs. contractor — the applicant may be a GC, architect, or owner — not necessarily the person scheduling the inspection.
If you believe there are inaccuracies in the underlying permit data, contact the City of Henderson Community Development at .