UEI: SXW5MVPMEDL5 • CAGE: 5RT42

SHAMROCK DEVELOPMENT CO (CA)

DBA: SHAMROCK DEVELOPMENT CO

Registration facts

SAM.gov registration as of Apr 23, 2026

SAM.gov registration: Expired; Registration expiration date Jan 13, 2026

Registration

Doing business as: SHAMROCK DEVELOPMENT CO
Entity structure: Corporate Entity (Not Tax Exempt)
Business start date: Mar 1, 1956 (70 years)
Location: Concord, CA
State of incorporation: California

All federal contractors in California How these figures are built

Source: SAM.gov entity registration and FPDS contract actions recorded under UEI SXW5MVPMEDL5. GovChime does not check exclusions.

Performance

Capabilities

NAICS codes

531120E(primary)
531190E

SBA certifications

No certification in the SBA profile data.

Federal Capability Statement

Shamrock Development Co is a Small Business located in Concord, CA. Shamrock Development Co delivers consistent and quality lessor of residential building services to its customers with the highest level of integrity and great attention to people, products, and service. They are passionate about their business and go to extraordinary lengths to satisfy their customers. Shamrock Development Co 's vision is to create and strengthen relationships with their customers by providing exceptional service and consistently demonstrating their quality lessor of residential building services. Shamrock Development Co and its employees take great pride in their work and in delighting their customers.

Capabilities & Services

lessor of real estate property

lessor of nonresidential buildings

Contracts

Contact Info

As of Apr 23, 2026. Source: SAM.gov Points of Contact.

SAM.gov registration for SHAMROCK DEVELOPMENT CO lists a physical address and a separate mailing address, along with 3 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

1333 WILLOW PASS RD STE 211

CONCORD, CA, 94520

USA

Mailing Address

1333 WILLOW PASS RD STE 211

CONCORD, CA, 94520

USA

Government Business Contact

RICHARD ROSENBERRY

PRESIDENT

1333 WILLOW PASS RD STE 211

CONCORD, CA, 94520

USA

Government Business Alternate Contact

KATHLEEN ROSENBERRY

1333 WILLOW PASS RD STE 211

CONCORD, CA, 94520

USA

Past Performance Alternate Contact

0002 531120YY ~531190YY N

0000

0002

E&Y

Additional Details

As of Apr 23, 2026. Source: SAM.gov Entity Registration.

SHAMROCK DEVELOPMENT CO has no active federal suspension or debarment on record in SAM.gov. Current SAM.gov registration expires January 13, 2026.

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 — CALIFORNIA~CALIFORNIA

Bonding Information

No bonding information provided

EDI

Not declared in SAM.gov

Business Structure

Source: SAM.gov

Profit Structure:For Profit Organization

Organization:Subchapter S Corporation

Registration Details

Source: SAM.gov

Initial Registration

Oct 20, 2009

Last Update

Jan 13, 2026

Registration Activation

Active — Jan 15, 2025

Fiscal Year End

0630

Country of Incorporation

USA

Congressional District