Building permit data
AvailableMercer County, New Jersey building permits
133,490 permits from Mercer County’s building department since 1992 — type, status, job value, contractor, dates and parcel id. Full history for $500, or the past 12 months for $75/mo.
- Permits
- 133,490
- Permit history
- 1992–2026
- Past 12 months
- 19,772
- Last collected
- Oct 20, 2026
Permits by year
By issue date (application date where no issue date), 2012–2026.
012.5K25K
23.9K
201220152018202120242026*
View as tableHide table
| Year | Permits |
|---|---|
| 2012 | 364 |
| 2013 | 383 |
| 2014 | 467 |
| 2015 | 468 |
| 2016 | 598 |
| 2017 | 665 |
| 2018 | 752 |
| 2019 | 1,172 |
| 2020 | 1,911 |
| 2021 | 15,448 |
| 2022 | 21,562 |
| 2023 | 20,439 |
| 2024 | 22,570 |
| 2025 | 23,896 |
| 2026 (YTD) | 14,749 |
Most common permit types
As the department classifies them.
- 06121.7K
- 045.1K
- 134.5K
- 052.2K
Field coverage
Share of records with each column populated.
- Permit numberpermit_number100%
- Permit typepermit_type100%
- Work descriptionwork_description0%
- Statuspermit_status100%
- Application dateapplication_date0%
- Issue dateissue_date100%
- Completion datecomplete_date0%
- Expiration dateexpiration_date0%
- Site addressaddress0%
- Parcel identifierparcel_id100%
- Job valuevaluation99%
- Contractorcontractor0%
Parcel identifier kinds
- Parcel number 133.5K
Sample records
8 real records from the file — its fullest, newest first.
| Permit # | Type | Status | Issued | Parcel ID | ID kind | Job value |
|---|---|---|---|---|---|---|
| 00019561 | 06 | P | Aug 6, 2026 | 1113-17.02-00003 | Parcel number | $15,200 |
| 00019579 | 06 | P | Aug 6, 2026 | 1113-00029-2.02 | Parcel number | $8,640 |
| 00019581 | 06 | P | Aug 6, 2026 | 1113-00062-00137 | Parcel number | $3,000 |
| 00019659 | 06 | P | Aug 6, 2026 | 1113-21.20-00068 | Parcel number | $4,514 |
| 00019578 | 06 | P | Aug 6, 2026 | 1113-27.09-00007 | Parcel number | $20,250 |
| 00019857 | 06 | P | Aug 6, 2026 | 1113-28.01-11.03 | Parcel number | $20,750 |
| 00019817 | 06 | P | Aug 6, 2026 | 1113-21.07-36.01 | Parcel number | $3,500 |
| 00019570 | 06 | P | Aug 6, 2026 | 1113-24.17-00018 | Parcel number | $1,350 |
Sources
Collected from 6 datasets published by Mercer County.
- Unnamed layernj dca · historical archive37,102 rows
- Unnamed layernj dca · historical archive14,515 rows
- Unnamed layernj dca · historical archive14,469 rows
- Unnamed layernj dca · historical archive14,054 rows
- Unnamed layernj dca · historical archive13,925 rows
- Unnamed layernj dca · historical archive11,925 rows
Why rows, not permits?Hide
A department can publish the same permit in more than one dataset — a current feed and an archive, or one row per inspection. The permit count above counts each permit number once.