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From installing the latest in rainwater recapturing equipment to digging manholes, we can do it all. But since our finished projects go largely unseen – hidden behind walls or buried underground – we wanted to give you an inside look at what we do.

Check out the gallery below for a behind-the-scenes look at some of our past projects and the pride that goes into everything we do.

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Starting a Plumbing Company: The Start of CornerStone One
Starting a Plumbing Company: The Start of CornerStone One

Dan Parman and Steve Adkins started what is now CornerStone One from just an idea and ambition. Dan has dedicated his life to helping others succeed, using mentorship and support to create emotionally safe work environments. This is exemplified in his relationship with Steve, whom he guided and financially supported to start a successful plumbing business. Steve has grown CornerStone One into an expansive company while fostering a lasting culture of people-first values.

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From Foundation to Future: The CornerStone One Story
From Foundation to Future: The CornerStone One Story

Steve Adkins shares how CornerStone One began in a garage and grew into a regional construction and plumbing company built on relationships and shared values. He reflects on early struggles and the people who helped the company succeed.

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CornerStone One Leadership Story: Dan Parman, Steve Adkins, and John Muraski
CornerStone One Leadership Story: Dan Parman, Steve Adkins, and John Muraski

CornerStone One focuses on growing—growing leaders and growing as an organization. Our story at CornerStone One isn’t linear. The challenges we've faced along the way have created triumphs. Our trust and investment in our leadership team, each other and our collective goal we all work towards is what keeps us strong and moving forward. This is our story.

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My path to becoming president – John Muraski
My path to becoming president – John Muraski

John Muraski, President at CornerStone One, looks back on his start in the plumbing industry and the path to becoming President. John shares his vision for the company and how it is constantly evolving and adapting to create a better, brighter future.

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Doing What’s Right for People: Dan Parman’s Perspective
Doing What’s Right for People: Dan Parman’s Perspective

Dan Parman, Co-Founder, explains how CornerStone One got its start and how it pushes people to grow in authority and responsibility. In helping people find what excites them and underscoring their strengths, CornerStone One helps the business (and its team members) prosper.

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Safety Comes First at CornerStone One
Safety Comes First at CornerStone One

Kyle Ricely, Safety Manager at CornerStone One, explains how employee safety always comes first. Ricely explains how safety is everyone’s responsibility, and how key protocols help keep jobsites accident-free—because safety in every sense is non-negotiable.

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Expectations at CornerStone One: The Three Non-Negotiables
Expectations at CornerStone One: The Three Non-Negotiables

CornerStone One emphasizes a culture built on three non-negotiables: mutual respect, appreciation, and open communication. The company encourages employees to treat others respectfully, address any incidents of disrespect directly and escalate unresolved issues to maintain a healthy workplace environment.

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Supporting Personal Growth: The Importance of Mental Health
Supporting Personal Growth: The Importance of Mental Health

At CornerStone One, mental health and its challenges are always a priority. That’s why we provide counseling services for all employees and their families free of charge. We support our employees to be the best, happiest, healthiest versions of themselves—both on and off the clock.

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Defining What We Believe: Our Mission, Values and Vision
Defining What We Believe: Our Mission, Values and Vision

CornerStone One shares its mission, vision and values and takes a look back at how the company grew from its early days as a plumbing business into the successful, multi-disciplined construction company it is today.

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Building Better Projects, Building Better People: Plan, Do, Check, Adjust
Building Better Projects, Building Better People: Plan, Do, Check, Adjust

The PDCA (Plan-Do-Check-Adjust) cycle is a proven process that CornerStone One created that is not just a method but a philosophy that guides continuous improvement of both people and systems.

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How Literacy Impacts Leadership: Book Club at CornerStone One
How Literacy Impacts Leadership: Book Club at CornerStone One

Book club at CornerStone One is not just for professional growth, but personal growth as well. At each book club meeting, participants discuss insights and reflections from their current book selection, sharing how the material helps them articulate ideas and feel comfortable engaging in group conversation.

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Building Wisconsin – Part 1
Building Wisconsin – Part 1

CornerStone Plumbing is featured in this TV broadcast highlighting an important conservation project – a rainwater harvesting system – developed for the Mitchell Park Domes.

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Building Wisconsin – Part 2
Building Wisconsin – Part 2

CornerStone founder Steve Adkins provides details on the Mitchell Park Domes rainwater harvesting system project.

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Building Wisconsin – Part 3
Building Wisconsin – Part 3

Domes horticultural services director Sandy Folaron discusses the importance of the rainwater harvesting project.

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Manhole Installation
Manhole Installation

This timelapse shows the planning, coordination and skill involved in installing a manhole. With over 30 years of experience and the latest technology, our expert crews work with speed and precision to complete even the most challenging of projects on time and on budget.

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CornerStone Outdoor Site Work
CornerStone Outdoor Site Work

CornerStone is in the process of installing storm sewers for a new parking structure at Mayfair Mall.

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Interior Plumbing
Interior Plumbing

CornerStone does interior plumbing work for just about any commercial application imaginable.

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CornerStone One | Prefab
CornerStone One | Prefab play video