Active
Small Business
Overview
- Legal name
- MCDEMUS & CO LLC
- Registered location
- MANASSAS, VA, USA
- Website
- Company website ↗
- Primary NAICS
- 541211 — Offices of Certified Public Accountants
- Latest award activity
- Jun 5, 2026
Read company summary
MCDEMUS & CO LLC is associated with UEI JXT4E7UEXX11 and CAGE 5VS48 in public federal records. AcornBids currently links 2 prime awards totaling $514.1K in obligations to this entity. Its largest recorded federal customer by obligations is Department of the Interior. Its recorded federal awards include work classified as Offices of Certified Public Accountants. These categories describe the loaded award records, not a complete list of company capabilities. Its primary SAM.gov NAICS is 541211 (Offices of Certified Public Accountants). Its public SAM.gov registration lists MANASSAS, VA, USA.
At a glance
Lifetime prime obligations$514.1K
Prime awards2
Awards with future end dates1
Top-agency concentration
Not available
Why this customer concentration
Detailed agency totals are not available in this stored profile.
Largest positive coded-agency total ÷ all positive coded-agency totals × 100
Missing data is shown as unavailable.
Prime contract obligations across loaded award records. Obligations are not revenue or contract ceilings. Summary updated Sep 27, 2026. Refresh pending; these totals may be out of date.
Business information
Public SAM.gov registration details.
- Legal name
- MCDEMUS & CO LLC
- UEI
- JXT4E7UEXX11
- CAGE
- 5VS48
- Registered address
- 8711 PLANTATION LN, MANASSAS, VA, 20110, USA
- Registration status
- Active
- Primary NAICS
- 541211 — Offices of Certified Public Accountants
- SAM activation
- Sep 30, 2025
- Initial registration
- May 16, 2012
- Entity start
- Nov 30, 2006
- SAM updated
- Sep 30, 2025
- Registration expires
- Sep 26, 2026
- Fiscal year end
- Dec 31
- Place of incorporation
- VA, USA
Federal award analysis
Net transaction obligations by federal fiscal period.
Transaction history is not available in the loaded data. Annual funding is not estimated from current award totals.
Recent federal awards
Prime contract awards. Select an award to review its history and source evidence.
| Award / description | Awarding agency | Obligations | Start date | End date |
|---|---|---|---|---|
| GS00F142GAFEDERAL SUPPLY SCHEDULE CONTRACT | General Services Administration | $1.0M | Mar 13, 2017 | Not available |
| 140D0423F1237THIS TIME AND MATERIALS TASK ORDER IS ISSUED FOR AUDIT SUPPORT SERVICES IN SUPPORT OF THE INDIRECT COST & CONTRACT AUDIT DIVISION (ICCAD) WITHIN THE DEPARTMENT OF THE INTERIOR'S… | Department of the Interior | $514.1K | Sep 15, 2023 | Sep 30, 2026 |
Upcoming positioning windows
Modeled recompete windows are estimates, not announced solicitations or guarantees.
Registration, certifications & contacts
| Registration evidence | Date |
|---|---|
| SAM updated | Sep 30, 2025 |
| Source loaded | Sep 26, 2026 |
| Initial registration | May 16, 2012 |
| Entity start | Nov 30, 2006 |
Expires Oct 25, 2026
SAM public SBA certification fieldsRegistration classifications: Self Certified Small Disadvantaged Business, Small Business, SBA Certified 8A Program Participant. These are separate from the reported certificates above.
| Industry | Reported size status |
|---|---|
| 512110 — Motion Picture and Video Production | Not reported |
| 541211 — Offices of Certified Public Accountants | Not reported |
| 541213 — Tax Preparation Services | Not reported |
| 541219 — Other Accounting Services | Not reported |
| 541611 — Administrative Management and General Management Consulting Services | Not reported |
| 541930 — Translation and Interpretation Services | Not reported |
| 541990 — All Other Professional, Scientific, and Technical Services | Not reported |
| 561110 — Office Administrative Services | Not reported |
| Contact | Role | Published contact methods | Evidence | Source date |
|---|---|---|---|---|
| UME ONWUKA | Government business | Contact method not published | SAM registration | Not available |
| UME ONWUKA | Alternate government business | Contact method not published | SAM registration | Not available |
| UME ONWUKA | Electronic business | Contact method not published | SAM registration | Not available |
| UME ONWUKA | Alternate electronic business | Contact method not published | SAM registration | Not available |
Registered industries
- 512110 — Motion Picture and Video Production
- 541211 — Offices of Certified Public Accountants
- 541213 — Tax Preparation Services
- 541219 — Other Accounting Services
- 541611 — Administrative Management and General Management Consulting Services
- 541930 — Translation and Interpretation Services
- 541990 — All Other Professional, Scientific, and Technical Services
- 561110 — Office Administrative Services
Registered products and services
- B547 — Accounting/Financial Management Studies
- Q601 — Medical Coding and Auditing
- R406 — Policy Review/Development Services
- R408 — Program Management/Support Services
- R410 — SUPPORT- PROFESSIONAL: PROGRAM EVALUATION/REVIEW/DEVELOPMENT
- R497 — Personal Services Contracts
- R499 — Other Professional Services
- R610 — Personal Property Management Services
- R616 — Administrative Support Services
- R702 — Data Collection Services
- R703 — Accounting Services (NOTE: New code created for Financial Services See R710 below)
- R704 — Auditing Services
- R707 — Contract, Procurement, and Acquisition Support Services
- R710 — Financial Services (includes credit card services and any other financial services. See revision to description for code R703 above)
- R799 — Other Management Support Services
- V226 — Taxicab Services
Registration classifications and published certificates do not by themselves establish eligibility for a particular solicitation. View SAM source
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About MCDEMUS & CO LLC
What products and services appear in its federal awards?
Recorded award industries: 541211 — Offices of Certified Public Accountants.
Recorded products and services: R704 — Auditing Services.
Examples from recent award records:
- FEDERAL SUPPLY SCHEDULE CONTRACT
- THIS TIME AND MATERIALS TASK ORDER IS ISSUED FOR AUDIT SUPPORT SERVICES IN SUPPORT OF THE INDIRECT COST & CONTRACT AUDIT DIVISION (ICCAD) WITHIN THE DEPARTMENT OF THE INTERIOR'S…
These records describe federal award work, not every company capability. Review the award evidence.
Where is the company registered?
8711 PLANTATION LN, MANASSAS, Virginia 20110, United States
Registered location from SAM.gov; award performance locations may differ.
What is its primary registered industry?
541211 — Offices of Certified Public Accountants.
Primary SAM.gov NAICS classification.
Which federal agencies are represented in its awards?
Department of the Interior; General Services Administration.
Data coverage and methodology
Sources: SAM.gov registration, USAspending awards and transactions, and linked supporting records. Prime contract obligations, IDV ceilings and assistance amounts are kept separate. Missing records are not zero activity. Company claims are labeled separately. Recompete signals are rule-based scores out of 100. Positioning windows are AcornBids estimates.
No official subaward rows are loaded, so Acorn does not claim known teaming relationships.
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