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Corner Keystone Constr. Corp.
Walnut, CA 91789
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Our Story
Our main lines of business include: Mason Contractors, Carpentry Contractors, Concrete Repair & Restoration Contrs..
Corner Keystone Constr. Corp. has been listed in the Blue Book since 2018.
What We Do
- Carpentry Contractors
- Concrete Repair & Restoration Contrs.
- Mason Contractors
Regions & Counties Serviced
- California-Los Angeles and Vicinity
California 1
- Los Angeles
Our CSI Codes
03 01 30.51 - Cleaning of Cast-in-Place Concrete
03 01 30.61 - Resurfacing of Cast-in-Place Concrete
03 01 30.71 - Rehabilitation of Cast-in-Place Concrete
03 01 40.51 - Cleaning of Precast Concrete
03 01 40.61 - Resurfacing of Precast Concrete
03 01 40.71 - Rehabilitation of Precast Concrete
03 01 60 - Maintenance of Grouting
04 01 20 - Maintenance of Unit Masonry
04 01 20.51 - Unit Masonry Maintenance
04 01 60 - Maintenance of Corrosion-Resistant Masonry
04 01 70 - Maintenance of Manufactured Masonry
04 05 16 - Masonry Grouting
04 06 20 - Schedules for Unit Masonry
04 06 20.13 - Masonry Unit Schedule
04 06 60 - Schedules for Corrosion-Resistant Masonry
04 57 00.00.01 - Masonry Fireplaces
06 01 10 - Maintenance of Rough Carpentry
06 01 10.71 - Rough Carpentry Rehabilitation
06 01 10.91 - Rough Carpentry Restoration
06 01 10.92 - Rough Carpentry Preservation
06 06 10 - Schedules for Rough Carpentry
06 06 10.13 - Nailing Schedule
06 06 10.19 - Plywood Shear Wall Schedule
06 10 53 - Miscellaneous Rough Carpentry
06 13 13 - Log Construction
06 13 13.91 - Period Horizontal Log Work
06 13 16 - Pole Construction
06 13 23 - Heavy Timber Construction
06 14 00.00.01 - Treated Wood Foundations
06 20 13 - Exterior Finish Carpentry
06 46 91 - Splicing of Wooden Components
08 01 10 - Operation and Maintenance of Doors and Frames
08 06 10 - Door Schedule
12 11 23 - Brick Murals
35 49 13.16 - Masonry Floodwalls