Over 50 years of excellence

Call: (971) 419-8917

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Your Partner in Precision and Craftsmanship

Commercial & Residential Low Voltage Contracting

With over five decades of expertise, Knepper Contracting LLC delivers unparalleled service in low voltage, security, and other technology projects. Our commitment to quality and customer satisfaction sets us apart in the industry.

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Low Voltage Mastery

Expert solutions in security systems, networking, and smart installations.

5 Star Reviews

Take a look online and see what a few of our past customers had to say.

Trusted Experience

Licensed, insured, and bonded with a legacy of trust and reliability.

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Who we are

About Us

Building a Legacy
of Quality and Integrity

Knepper has been a trusted name in contracting for half a century. Our long track record of providing exceptional service has made us a leader in the industry. As a family-owned business, we take pride in our work and will make sure your project is carried out with the utmost care and attention to detail. We are committed to our customers and believe that our success comes from our ability to form lasting partnerships with them.

Our Expertise

Our Technology

Security Systems

Protect your home or business with advanced alarm and monitoring systems designed for fast response and full coverage.

Cameras/CCTV

High-definition surveillance solutions for real-time monitoring, recording, and remote access—indoors or out.

Low Voltage Cabling

Efficient, organized cabling infrastructure for data, communications, and integrated building systems.

Smart Home /Office

Seamlessly control lighting, climate, security, and media with intelligent automation tailored to your space.

Audio/Video

Custom audio and video systems for clear sound, immersive viewing, and professional-grade presentations.

Fiber Optic

High-speed, high-capacity fiber optic installation for fast and reliable data transmission over long distances.

Networking/Cabling

Robust networking solutions including structured cabling, routers, switches, and wireless setup for seamless connectivity.

Access Control

Secure, scalable access systems for doors, gates, and restricted areas using keycards, biometrics, or mobile credentials.

Fire Alarm

Code-compliant fire detection and alarm systems to ensure fast alerts and enhance building safety.
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Our Expertise, Your Vision

Why Choose Us

When choosing Knepper Contracting, you are choosing a team with a long history and experience in the industry. My father, John Knepper Sr, started low voltage installations 50 years ago and we have been providing quality work ever since. As the owner, I take great pride in my work and am committed to earning your business. We specialize in large commercial installations and are dedicated to providing the highest level of customer satisfaction. Thank you for considering Knepper Contracting.

Licensed & Insured

Professional support

50 Years of Excellence

Family Owned Values

Valueable Reviews

What Our Clients Say

I hired the Knepper team with great success. They were incredibly fast with the service of my house. In and out within one day. I would recommend these guys to anyone looking for quality work and efficiency. They know their job well! Thanks guys!

- John Monteleone

We highly recommend Knepper Contracting. If you’re looking for a business that stands behind their work, listens closely to their clients, and is reliable and professional, they are your go-to. We can’t say enough about the outstanding work they do!
- Debbie Bartley

This group of guys are some of the most hard-working and professional people I’ve ever had the pleasure of working with. They make sure they’ve got every eye and cross every tea and does not leave the job until the customer is completely satisfied
- James White

Very knowledgeable. Nice clean work. Good pricing & communication. Just completed phase 1 of the project, and am looking forward to working on phase 2.
- Mike Atkinson

John was very professional and courteous. He explained clearly the nature of the work. He delivered on time anfd there were no surprises. I would not hesitate to contact John again in the future.
- Philippe Justel

Reach out Today

Get in Touch

Phone

(971) 419-8917

Email

John@KnepperContracting.com

Address

11209 SE Wood Ave, Milwaukie, OR 97222

Transform Your Space with Expert Contracting

Discover the difference that over 50 years of expertise can make. Whether you’re looking to enhance your home with our carpentry services or secure your business with advanced technology solutions, Knepper Contracting LLC is here to bring your vision to life. Let us provide you with a personalized quote or showcase our portfolio of successful projects.

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