Blue Dun Engineering Services · Sammy Chang

2429 Monogram Avenue, Long Beach, 90815

Overview

SAMMY CHANG (doing business as BLUE DUN ENGINEERING SERVICES) is a business in Long Beach registered for Business Tax Registration Certificate (BTRC) with the Office of Finance of Los Angeles. The location account number is #0003466027-0001-5. The business started from July 6, 2025. The registered business location is at 2429 Monogram Avenue, Long Beach, 90815. The mailing address is 2429 Monogram Avenue, Long Beach, 90815. The NAICS code is 541330 - Engineering services.

Business Information

Location Account0003466027-0001-5
DBA NameBLUE DUN ENGINEERING SERVICES
Business NameSAMMY CHANG
Address2429 Monogram Avenue
Long Beach
90815
Mailing Address2429 Monogram Avenue
Long Beach
90815
Location Description2429 MONOGRAM 90815
NAICS541330: Engineering services
North American Industry Classification System
Location Start Date2025-07-06

Location Information

Street Address 2429 MONOGRAM AVENUE
CityLONG BEACH
StateCA
Zip Code90815

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Dataset Information

This dataset includes over 150 thousands businesses registered with the Office of Finance of the City of Los Angeles. A business within the City of Los Angeles must register for a Business Tax Registration Certificate (BTRC). Each business is registered with location account number, legal business name, doing business as (DBA) name, location, mailing address, industry code, business start date, etc.

SubjectAdministration and Finance
JurisdictionCity of Los Angeles, State of California
Data ProviderLos Angeles Office of Finance
Sourcedata.lacity.org

Dataset Details

All individuals and companies doing business within the City of Los Angeles must register their business for a Business Tax Registration Certificate (BTRC) with the City Office of Finance and pay business taxes each year. This applies to any business that is physically located within the City limits or the business owner or his employees conducts business within the City limits.

A new business registration needs the following information: Legal Business Name, Business Name/Doing Business As, Business Start Date, Business Type, Primary Business Address, Mailing Address, Business Contact Information, Sales Tax Number and Business/Professional Activity Code. The business actitivity professions include Arts, Entertainment and Recreation, Construction Contractor, Finance and Insurance, Food Establishments and Sales, Health Care and Social Assistance, Internet Service Providers, Web Search Portals and Data Processing Services, Manufacturing, Radio, Television, Cable, Multimedia, Motion Picture and Sound Recording, Real Estate & Rental & Leasing, Services, Telecommunications and Utilities, Transportation and Warehousing.

This dataset includes current and previously registered businesses and trades. The registered information for each business includes location account number, legal business name, doing business as (DBA) name, business address, mailing address, industry code, business start date and end date, etc.

The City of Los Angeles has a dedicated site of Open Data Portal offering direct access to live and continuously updated data, driving innovation and improve the quality of City services. The Open Data Portal is the City's repository for data, created to support the free flow of information and contribute to the democratic process through nonconventional forms of community engagement such as data-sharing.