NATIONAL PRESERVATION INSTITUTE: Single Audit Reports and Findings
NATIONAL PRESERVATION INSTITUTE filed 1 single audit between 2025 and 2025; the most recently observed auditor is Mullins PC (2025), and the 2025 report lists 2 findings. Data as of 2026-10-30.
Data as of Oct 30, 2026 · Source: Federal Audit Clearinghouse (public data)
Single audits by year
One row per audit year as the Federal Audit Clearinghouse accepted it. The auditor named is the one observed on that filing; NATIONAL PRESERVATION INSTITUTE is recorded in ALEXANDRIA, Virginia under EIN 621247166, and the Clearinghouse records it as a nonprofit. Each report opens on the Clearinghouse itself; how to search the Federal Audit Clearinghouse explains the rest of the reporting package.
| Audit year | Fiscal year end | Federal expended | Threshold applied | Auditor observed | Findings | MW / SD | FAC report |
|---|---|---|---|---|---|---|---|
| 2025 | 2025-12-31 | $2,470,017 | $1,000,000 | Mullins PC | 2 | SD | 2025-12-GSAFAC-0000430931 |
Which federal programs did this organization report?
From the most recent accepted report, as listed on its schedule of expenditures of federal awards (SEFA). "Major" is the designation the auditor made under 2 CFR 200.518, not ours.
| ALN | Program | Expended | Major |
|---|---|---|---|
| 12.632 | DEPARTMENT OF WAR ENERGY, INSTALLATIONS, AND ENVIRONMENT INNOVATION PROGRAMS | $2,470,017 | Yes |
What findings did the auditor report?
The reference and the requirement letter are the ones the auditor used. The finding text itself is not reproduced here; the FAC report linked above carries it in full. What the two severity levels mean: material weakness vs significant deficiency.
| Reference | Requirement | Severity | Repeat |
|---|---|---|---|
| 2025-001 | I | Significant deficiency | No |
| 2025-002 | L | Significant deficiency | No |
Form 990 and IRS registration
Form 990 "accounting fees" (Part IX line 11c) cover all accounting services reported by the organization and are not the price of an audit engagement.
Where to find the return itself, and what our Form 990 data covers: Form 990 lookup.
- Most recent return
- 990 for 2024-12
- Total revenue
- $904,480
- Total assets
- $393,255
- Accounting fees (Part IX line 11c)
- $6,325
- Paid preparer
- VTA ADVISORS
- IRS object id
- 202503169349301440
- Exempt under
- 501(c)(3)
- Ruling year
- 1982
- BMF release
- 2026-10-20
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How we computed this
Every row comes from the Federal Audit Clearinghouse record named beside it, one report per audit year, with a resubmission superseding the filing it replaces. The auditor is the one named on that filing — it is not a statement about who audits NATIONAL PRESERVATION INSTITUTE now. Form 990 figures come from the IRS e-filed return named by its object id. This page exists because the organization filed at least two single audits, or one with a finding.
Cite this page
AuditRadar. “National Preservation Institute, Virginia Single Audits 2025.” https://getauditradar.com/single-audits/va/national-preservation-institute-621247166/. Data as of 2026-10-30.