Start a Fairfax County permit search in PLUS with one strong key: the record number, parcel ID, or street number and name. If the file began in FIDO or PAWS, preserve the old number and try the County’s legacy-number format before treating the blank result as a missing record. Use LDIH for older uploaded land-development records, SRV for the approved site-plan PDFs it covers, and the LDS records-request route for a named file that is not online.
Confirm that Fairfax County is the records custodian
This guide covers Fairfax County Land Development Services records. A Fairfax mailing address is not enough to establish County jurisdiction. The County’s location guidance says to check the linked zoning map and contact independent cities or towns directly when the site is in one of those jurisdictions.
Confirm the jurisdiction before interpreting an empty County search. If the property is within County authority, copy the address as the County presents it and preserve the parcel ID. If another city or town is responsible, use that jurisdiction’s building office rather than treating the County portal as a complete search.
Search PLUS without overfilling the form
Open the Building tab in Planning and Land Use System, or PLUS. The current form accepts Record Number, Record Type, Project Name, Start and End Date, street number and name, and Parcel ID. Search All Records is available when you are unsure which module holds the file.
Begin with one of these routes:
- Enter the exact record number with its hyphens.
- Use Parcel ID when the address has changed or a project covers more than one address.
- Use the street number and street name when the record number is unknown.
- Leave Record Type broad unless the type is already known.
Adding every available field can exclude the right result. The start date shown as 1900 is a search filter, not proof that PLUS contains County records back to 1900. We reviewed the current form and Help instructions but did not submit a property or record query, open a result, or verify a download.
Keep the original and converted record numbers
Fairfax County’s PLUS Help uses different shapes for current and migrated identifiers. The following are format examples, not real records:
- Current PLUS-style example: XXXX-2022-00001.
- Converted legacy examples: XXXX-000012345 or XXXX-012345678.
- FIDO lookup example: add an asterisk before the nine-digit number, as in *123456789.
Keep the original number beside every version you try. Do not invent the four-letter record-type prefix; take it from an existing County document or ask staff to identify it. If the converted key returns a plausible match, compare its address, project name and displayed record type before saving it.
The site’s permit number lookup guide gives a general method for preserving identifiers. The Fairfax-specific punctuation and conversion rules above control this search.
Choose the older-record repository by document type
The County’s LDS Public Records page says PLUS replaced FIDO and PAWS on October 31, 2022 and migrated older records. Treat this as a platform launch, not a coverage floor.
For a hard-to-find migrated record, open Land Development Information History, which is limited to records uploaded before the PLUS launch. Its form offers All Text, All IDs, Address, Project Name, dates, parcel, subdivision, block, lot and record-type filters. Start with Address or All IDs; legacy availability is not guaranteed.
SRV contains approved PDFs for named site records, including infill grading plans, Resource Protection Area studies and site plans. It is not a complete architectural-plan archive; a miss does not settle whether a building drawing exists.
Log the original and converted number, address, parcel, dates and system; the older permit lookup guide explains how to preserve a reproducible miss.
Separate the permit row from retained attachments
Fairfax County says building plans and supporting documents are destroyed three years after final inspection; site-project bonding and correspondence follow five years after project completion. Those limits apply to named attachments, not automatically to the permit’s index row.
Suppose a fictional permit was finalized four years ago. Its PLUS row may still identify the permit while a building-plan attachment is past the stated retention period. Site-project correspondence follows a different clock. Preserve the permit number and final-inspection date, then request the exact record instead of “all plans.”
A permit entry or retained plan also does not prove final approval or occupancy. If that distinction matters, use the site’s Certificate of Occupancy versus building permit guide and request the separate completion record the County actually holds.
Request a named file that is not online
Use the County’s LDS Freedom of Information Act records-request page after checking the appropriate online system. Send a focused request to LDSFOIA@fairfaxcounty.gov with the County jurisdiction, property address, parcel ID, every record-number form tried, approximate project date, record type and the systems already searched.
The request page explains that charges may reflect the actual cost of fulfilling the request and that responsive documents can be provided only when they exist. It does not restore a document already destroyed under the retention schedule. Ask for the permit record, final-inspection record, approved site plan or other named object rather than asking staff to recreate an analysis.
An empty search or unavailable attachment does not establish that no permit was issued, that work was unlawful, or that the property is safe for current use. It may reflect a key-format mismatch, a different repository, a jurisdiction issue, a record that was never uploaded, or an applicable retention limit.
Sources checked September 20, 2026 (KST). We reviewed the official County instructions and current PLUS and LDIH search forms. We did not submit a property, permit or records search, open an individual result, download a file, or send a records request.