GovChime
UEI: VMMHLJVJWG35 • CAGE: 7ZKB8

CAPSTONE MECHANICAL & GENERAL CONTRACTOR LLC (PR)

Registration and award facts

SAM.gov registration as of

Net obligations since FY2021
$3.44M
$3,440,665under this UEI
FY2026 obligations
$985.65K
$985,649Provisional
Awards and orders
5
with positive net obligations
Latest action
Sep 16, 2026
SAM.gov registration
Active
Registration expiration date Sep 8, 2027

Registration

Entity structure
Corporate Entity (Not Tax Exempt)
Business start date
Sep 14, 2017 (9 years)
Location
San Juan, PR
State of incorporation
Puerto Rico
Purpose of registration
All Awards

† FY2026 obligations (provisional; DoD awards signed after Jul 27, 2026 are not yet public).

All federal contractors in Puerto RicoHow these figures are built

Source: SAM.gov entity registration and FPDS contract actions recorded under UEI VMMHLJVJWG35. GovChime does not check exclusions.

Performance

Net obligations recorded under this UEI since FY2021. Top lists show the largest five by share of this vendor's net obligations; the shares do not sum to 100%.

Net obligations by fiscal year of action

  • FY2026: $985,649 (provisional)
  • FY2025: $1,002,539
  • FY2024: $960,249
  • FY2023: $458,600
  • FY2021: $33,627

Total across 5 fiscal years: $3,440,665

Top awarding agencies

Top awarding sub-agencies

Top NAICS by obligations

Top product and service codes by obligations

  • R706Support- management: logistics support$2,944,557, 85.6%
  • Y1JZConstruction of miscellaneous buildings$458,600, 13.3%
  • C1PZArchitect and engineering- construction: other non-building facilities$16,905, 0.5%
  • Y1PZConstruction of other non-building facilities$16,722, 0.5%
  • Z1AAMaintenance of office buildings$3,880, 0.1%

Capabilities

NAICS codes

Show all 44 NAICS codes

Small: small business for that NAICS, self-certified in SAM.gov registration.

SBA certifications

  • SBA Certified 8(a) Program Participant, exit date Feb 24, 2031

Business types self-reported in SAM.gov registration:

  • Minority-Owned Business
  • Hispanic American Owned
  • Self Certified Small Disadvantaged Business

Product and service codes (PSC)

  • C100Architect and Engineering Services
  • C1AAArchitect and Engineering Services
  • C1ABArchitect and Engineering Services
  • C1CAArchitect and Engineering Services
  • C1CZArchitect and Engineering Services
  • C1DAArchitect and Engineering Services
  • C1EBArchitect and Engineering Services
  • C1FAArchitect and Engineering Services
  • C1FBArchitect and Engineering Services
  • C1FCArchitect and Engineering Services

Federal Capability Statement

We are problem/situation solvers. With over 30 years in the construction and power industries, have done consulting for FEMA related issues, Have worked for Federal Government USGS, Dept. of State, Dept. of Homeland Security, Puerto Rico Government. Grant consulting, project management, roofing, coatings, doors, windows, welding, installations, plumbing, electricity, road construction, building construction.

Capabilities & Services

construction
project management
consulting
welding
painting
electrical
concrete
lighting
door
plumbing
drywall
roofing
window
document
turbine
boiler
moving
coating
hardware
silicone
sandblasting
cleaning
grounds maintenance
landscaping

Contracts

Latest awards and orders

  1. 2043FY24P00236Purchase orderDepartment of the TreasuryInternal Revenue ServiceLatest action
  2. 12639523C0088Definitive contractDepartment of AgricultureAnimal and Plant Health Inspection ServiceLatest action
  3. 12FPC325C0004Definitive contractDepartment of AgricultureUnder Secretary for Farm and Foreign Agricultural ServicesLatest action
  4. 140G0121P0218Purchase orderDepartment of the InteriorU.S. Geological SurveyLatest action
  5. 140G0121P0406Purchase orderDepartment of the InteriorU.S. Geological SurveyLatest action

Contact Info

As of . Source: SAM.gov Points of Contact.

SAM.gov registration for CAPSTONE MECHANICAL & GENERAL CONTRACTOR LLC lists a physical address and a separate mailing address, along with 4 verified points of contact. Past Performance contacts are the recommended outreach channel for due-diligence references; Government Business contacts handle procurement-facing correspondence.

Source: SAM.gov entity registration. Contacts displaying numeric or placeholder names have been filtered (defense-in-depth).

Physical Address

750 ANDROMEDA STREET

URB. VENUS GARDENS

SAN JUAN, PR, 00926

USA

Mailing Address

PO BOX 260105

SAN JUAN, PR, 00926

USA

Government Business Contact

Douglas M Rivera

President

PO Box 260105

San Juan, PR, 00926

USA

Electronic Business Contact

Jose Lafontaine

Mr

Monte Oro #1

San Juan, PR, 00926

USA

Past Performance Contact

Douglas M Rivera

President

PO Box 260105

San Juan, PR, 00926

USA

Electronic Business Alternate Contact

Douglas M Rivera

President

PO Box 260105

San Juan, PR, 00926

USA

Additional Details

As of . Source: SAM.gov Entity Registration.

CAPSTONE MECHANICAL & GENERAL CONTRACTOR LLC has no active federal suspension or debarment on record in SAM.gov. Current SAM.gov registration expires September 8, 2027.

Source: SAM.gov entity registration (FAR responses, registration status). Always verify active exclusions against the authoritative record on SAM.gov before contract award.

Compliance & Risk Assessment

Source: SAM.gov FAR responses

Suspension/Debarment Status

SAM.gov registration reports no active exclusion

Public Display

Entity information is publicly displayed

Disaster Relief Registry

Registered for disaster relief contracting — FLORIDA~PUERTO RICO~VIRGIN ISLANDS

Bonding Information

Bonding information on file

EDI

Not declared in SAM.gov

Business Structure

Source: SAM.gov
Profit Structure:For Profit Organization
Organization:Limited Liability Company

Registration Details

Source: SAM.gov

Initial Registration

Oct 29, 2017

Last Update

Sep 9, 2026

Registration Activation

Active — Sep 9, 2026

Fiscal Year End

1231

Country of Incorporation

USA

Congressional District

98

Other contractors in Puerto Rico with primary NAICS 236220