The Museum Home – The Ontario Power Company Building

Since early 2013 CCMA's location the historic Ontario Power Company Building at 217 South Lemon Ave in downtown Ontario. The building has a rich history of which we are proud to be a part.

The Beginning.

The Ontario Electric Company was organized on February 16, 1895 by Mrs. Elizabeth Jenkins, Godfrey Stamm and his two sons George and F.B., Charles Frankish, and C.W. Foote. The first power building was constructed on Mountain Ave that same year.

The Purpose.

The Company operated an electric railway and an electric light plant, which sold arc and incandescent lights.


The Building.

The Company’s new building was constructed in 1907 at 217 S. Lemon Ave. This location served as the Company’s main offices until Southern California Edison Co. assumed operations during the 1920s.

The Partnership.

The Company shared the site with the San Antonio Water Company which had also begun developing hydroelectric power at the same time. Together they produced far more electricity than they could sell.

The Electrician.

Earl H. Richardson was tasked with finding ways to create a new demand for electricity. In 1903 he responded with the invention of the Hotpoint iron. He established the Pacific Electric Heating Co. which later became General Electric in 1918.

The Police Station.

In 1954, after Southern California Edison moved, the Ontario Police Department moved its headquarters to the building. Later that same year, the city built a new jail to handle “overflow” from the main jail.

The Orchestra.

From 1967 until 1978, the West End Symphony Orchestra occupied the building. They hosted several membership dinners and concerts there.

The Museum.

Since the 1980s the building has been used by the City’s Housing Agency , Engineering Dept., the Museum of History and Art, the Model Colony History Room, and the Fire Department. Today this local landmark is home to the Chaffey Community Museum of Art.

In recognition of the rehabilitation work done to transform office space into four museum galleries, a museum store and administrative areas, in May 2014, CCMA was presented with a Model Colony Award by the City of Ontario Planning Department.


Museum Closure

 CCMA is following State, County and City of Ontario guidelines during the COVID-19 pandemic. The museum is currently
closed to the public until further notice.

During closure, please direct inquiries to CCMA board chairman Nancy DeDiemar (
or 909-214-3459.

CCMA is continuing to accept applications for Art at Airport while closed.
Check here or on our Facebook page for updates to this notice.

Statement of Support

CCMA is an arts organization with the word community as part of its name. And so we grieve with communities of color in our city, our country and the world, for the death of George Floyd and all the others before him who have been disadvantaged, suffered and died because of the color of their skin.
As we have seen over the past few weeks, collective grief can be channeled into positive actions that change institutions and systems to create a more just society. CCMA intends to be part of that change.

 Events at the Museum

No events are currently scheduled.

 Art at Airport

CCMA is managing the public art program at  Ontario International Airport. Exhibits featuring the art of 20 regional artists may be seen in the passenger arrival/departure area of Terminals 2 and 4.

Visual artists interested in participating in the  program can click on the EXHIBIT tab above for more information and the application form. CCMA is accepting artist applications during the museum closure period.

Life Drawing Session at CCMA
Postponed Until Further Notice

Live model
Sessions are the third Thursday of the month
10 am to 3 pm
$15 -- open to all

 Open Studio at CCMA
Postponed Until Further Notice

Fridays from 11 am – 3 pm
Where artists meet to create and share their artwork in an unstructured environment.

Open Studio at CCMA is a place for artists to come together and create art in the presence of other artists. It is intended to foster creativity, exchange, conversation, encouragement and freedom of artistic expression. All artists are welcome and invited to participate. Every Friday from 11 am to 3 pm at the museum.

CCMA in the News

Ontario Connects

View highlights of Sheets, Sheets & Caughman CCMA/OMHA exhibition
Art for Living and Living for Art
by clicking on the title

Joe Blackstock

Inland Valley historian Joe Blackstock visits CCMA to view the nine paintings of the Barbara Line Memorial Collection. Click here to view article.
 IEShineOn, an online source for events and activities in the Inland Empire, featured CCMA. To view the article, click here.

Suzanne Sproul

Inland Valley Daily Bulletin columnist Suzanne Sproul reports on the Sheets, Sheets & Caughman exhibit Art for Living and Living for Art. To view the article, click here. Read about CCMA's 75th anniversary in 2016 by clicking here. 

David Allen
Inland Valley Daily Bulletin columnist David Allen visits CCMA's outdoor sculpture at the front of the museum. The sculpture was created by Fullmer Construction superintendent Gary Rue entirely from materials leftover from construction the parking lot next door. Click here to see a photo and read David's blog.

Trevor Summons

Click here  or click here to read about CCMA
in Trevor Summon's column

Foothills Reader

Click here to read about CCMA
in the Foothills Reader

217 S. Lemon Ave
Ontario, CA 91761-1623

Free Admission
Thursday through Sunday
noon — 4:00 pm

Closed Thanksgiving Day and Christmas Day

Rent the Museum for your event

The Museum is available year-round as a venue for compatible events of small to medium-sized groups. For more information, including rental rates, available days and times, and floor plan, click here.

 217 S. Lemon Ave, Ontario, CA 91761 • 909.463.3733 • • Thursday-Sunday, noon - 4 pm • Free Admission