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From Humble Beginnings

Over 40 years ago, Robert Peccia decided to take a risk and open an engineering firm. The Montana State University civil engineering graduate and a handful of employees wedged themselves into a tiny downtown Helena office and created RPA. The fledgling firm worked on small transportation, planning, and other miscellaneous projects. The company vehicle fleet consisted of Bob’s personal Honda and a beat up Datsun hatchback, fondly referred to as the “dustpan”. The drafting was done by hand and “state-of-the-art” was considered the IBM programmable typewriter with a changeable font head.

Robert J. Peccia, PE, Founder, 1978

Fast forward Four Decades

Bob completed the sale of the the company in 2009 to the employees and RPA transitioned into the first 100% ESOP (Employee Stock Ownership Plan) engineering company in Montana. There are offices in Helena, Kalispell, and Bozeman, Montana. The firm’s staff has grown from a “handful” to over 60 individuals. Professional services now include all aspects of Civil Engineering, Land Surveying, Subsurface Utility Engineering (SUE), Structures, and GIS. Staff members work alone or team up on interesting and complex projects at diverse locations across the United States.

Built on a solid foundation, RPA continues to design for future generations!

Giving Back to Our Community

At RPA, we pride ourselves in supporting local non-profit agencies as well as taking an active role in community support through our many charitable contributions. 

An abbreviated list of organizations is below.

Carroll College Endowment

Carroll College EWB Student Chapter

Carroll College ASCE Student Chapter

Exploration Works

FVCC Foundation

Helena Education Foundation


MSU (Engineering Scholarship Endowment Fund)

Big Brothers Big Sisters

Healthy Mothers Healthy Babies

Kalispell Regional Medical Center Foundation

Lewis & Clark Search & Rescue

Montana Meth Project

NAMI Montana

Shodair Children’s Hospital

Montana Community Foundation

St. Peter’s Hospital – Mandy Bell Endowment Fund

Museum of the Rockies

The Friendship Center

United Way

God’s Love

Friends of the Fairgrounds

Helena Area Chamber of Commerce

Montana Association of Counties

Lewis & Clark Humane Society

Lewis & Clark County 4H

Florence Crittenton Home – Paint the Town Pink

Kay McKenna Youth Foundation

Montana No Kid Hungry – Share Our Strength

Montana Special Olympics

YMCA Helena

YWCA Helena

Archie Bray Foundation

Grandstreet Theater

Helena Symphony – Symphony Under the Stars

Holter Museum of Art


Lewis & Clark County Library

Myrna Loy (Business Sponsorship)

Prickly Pear Land Trust

Rocky Mountain Elk Foundation

The Foundation for Animals

Helena Food Share

Exchange Club of Helena

Montana Historical Society

Townsend Fall Fest

Montana League of Cities and Towns

Helena Area Habitat for Humanity

St. Peter’s Hospital Foundation – Light a Life