Shannon Howard-Bisordi

About Howard Homes Group


Picture of Shannon Howard-Bisordi

Shannon is a Bay Area native, born and raised in Novato and a second generation Marinate. She is a graduate from San Marin High School and holds a Masters Degree in Business. Shannon has been part of the Real Estate Industry since 2000 and obtained her Real Estate license in 2003. In her Career she has worked for Vanguard Properties, RE/MAX and Coldwell Banker. She believes that her advanced education, savvy business, negotiation, marketing and technology skills make her a valuable asset to her clients. As an Accredited Staging Professional she assists her clients in preparing their home for the market from staging, project management and helping coordinate a mini flip if necessary. These are just some of the unique services that Howard Homes Group provides as part of every sale to their clients.

As a working mom, Shannon is a “Real Mom of Real Estate” and specializes in working with families to help them prepare their homes for sale and search for new homes with as little disruption as possible to regular family life. She currently resides in Petaluma with her husband Mark and two beautiful daughters Saphie and Abigail. She enjoys selling real estate both in Marin and Sonoma Counties and prides herself on having positive relationship with not only her client’s but fellow Realtor® colleagues as well.

In addition to taking pride in her Real Estate Career, Shannon has always believed in giving back to the communities that she works and lives in. Howard Homes Group is a proud Affilate of Homes for Heroes where they give back to Buyers and Sellers who are members of the military, medical profession, teachers, police and fire departments. She is passionate about the future of youth in our Communities. Shannon & her husband Mark are Foster Parents and have adopted their two amazing daughters. Shannon is actively involved with the Waugh School District and the WISE Foundation, Girl Scouts and Boys & Girls Clubs of Central Sonoma County, In the past Shannon has chaired Fundraising Events or been an active participant in American Cancer Society, Rebuilding Together, Petaluma Chapter of Realtors, Junior League of Napa & Sonoma Counties and Santa Rosa West Rotary Club.

Joined forces with his daughter Shannon in 2016 after ending a 40 year career in the printing Industry. He has always taken an interest in real estate through home renovations and managing a portfolio of rental properties. Gary is hands on and helps clients secure the best vendors and acts a project manager with client home renovations to assist in preparing their homes for the market. Gary is a native from San Francisco and moved to Marin County in the late 1960’s and was a member of the first graduation class from San Marin High School. Once married he moved to Petaluma where he currently resides with his wife. He has two other children Camryn and Riley. Camryn is a Sophomore at Sonoma State and Riley is a Petaluma Police Officer. Gary enjoys camping and taking his ski boat out to local lakes.

Contact Us

address755 Baywood Drive, FL 2
Petaluma, CA 94952
state license #Shannon Howard-Bisordi BRE#01387286, Gary Howard BRE#02005947

Company Info

Vanguard Properties
11 Fifth Street, Suite 201
Petaluma, CA 94952

Designations & Awards

ASP Accredited Staging Professional
Homes for Heroes®
National Association of REALTORS®
California Association of REALTORS®
Northbay Association of REALTORS®




Shannon knows her stuff. She helped us to stage our condo so that it looked like a model home. With her keen eye, our photography looked amazing. We sold our condo for $11000 over asking in just 28 days. The whole process was a breeze and Shannon didn’t miss… (more)

5douglas spackman

Shannon was the greatest Realtor to work with. Not only is she incredibly well-informed, her opinions about things as wide-ranging as how to stage the place we sold, to the right steps to take to ensure we got the house that we wanted, in the neighborhood of… (more)


Shannon was a wonderful real estate agent for our family. She took the time to understand what we were looking for in a home, and was able to make our dreams come true. She was always prompt to answer any questions that we may have had. Shannon is very… (more)

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