Execute your project on time and with exceptional quality.

OUR LOCATION
OVER 100 YEARS EXPERIENCE
OUR SERVICES

- Pipeline

- Concrete

- Grading

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  • GJ Gentry General Engineering Inc.

© 2019 by GJ Gentry General Engineering Inc.

1297 W. 9th Street
Upland, CA 91789

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Phone: 909.693.3391

BUSINESS HOURS

Mon. - 7am - 4pm

Tues. - 7am - 4pm

Wed. - 7am - 4pm

Thurs. - 7am - 4 pm

Fri. - 7am - 4pm

Sat. - CLOSED

Sun. - CLOSED

pipeline contractor southern California,

general contractor southern California, grading southern California, concrete contractor, concrete southern California 

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EXPERIENCE THE DIFFERENCE.

Pipeline   Concrete   Grading

SAFETY

Safety is Our Priority. We Strive For A "Zero- Accident" Workplace.

FEATURED PROJECTS

There is No Project Too Big That

GJ Gentry Can't Handle. 

CAREERS

Consider Becoming Apart of Our

GJ Gentry Gen Eng Inc. Team.

Local Union No. 783

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BEST EMPLOYEES IN THE INDUSTRY

GJ Gentry General Engineering Inc. is most proud of the people it employs. 

GJ Gentry General Engineering Inc

1297 W. 9th Street Upland, CA 91786

​

Phone: 909.693.3391

​

Mon. - 7am - 4pm

Tues. - 7am - 4pm

Wed. - 7am - 4pm

Thurs. - 7am - 4 pm

Fri. - 7am - 4pm

Sat. - CLOSED

Sun. - CLOSED