A profile · Durham

Cornerstone Installation Services

Durham, NC · Serves a 65-mile radius · Established 2021

★ 4.5 (9 reviews)

COAX ·ETHERNET ·FIBER OPTIC ·ACCESS CONTROL ·POE

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Illustrative photo for Cornerstone Installation Services, a low-voltage installer in Durham, NC — Stock imagery: illustrative of the work Cornerstone Installation Services performs. Real install photography in progress as we feature more pros.

Service area: 65-mile radius around Durham, NC — *Serves a 65-mile radius around Durham, NC.*

Durham's go-to contractor for coaxial & cable tv and ethernet & structured cabling. Cornerstone Installation Services serves residential and commercial clients across North Carolina.

Owner-operator Justin Shah runs the day-to-day at Cornerstone Installation Services, working with the kind of hands-on attention to detail that's gotten the shop 9 verified reviews on WiringInstallers.

4.5 out of 5 · 9 verified reviews

What they do 5 focused categories of work.

Coaxial & Cable TV

RG6/RG59 installation for cable TV, satellite, and MoCA networks.

Ethernet & Structured Cabling

Cat5e, Cat6, Cat6A installation and termination for homes and businesses.

Fiber Optic

Single-mode and multi-mode fiber installation, splicing, and testing.

Access Control

Card readers, door controllers, and security access system wiring.

Power over Ethernet (PoE)

PoE switch installation, WAP cabling, and powered device networks.

Trained and certified 4 credentials, current as of last refresh.

NICET Fire Alarm /BICSI INST1 /FOA CFOT /OSHA 10

Verified by WiringInstallers · last refreshed June 2026.