The Team


Sarah Hall

Chief Executive Officer

With Catalyst Builders since 2017, Sarah provides financial structure and hands on interaction with the entire team. Sarah values her close communication with the team, to ensure company cohesiveness and a thriving environment. Her direct focus is on strategic growth and implementation. She and Doug Gray collectively lead Catalyst Builders and their top priority is to nurture and sustain a company all can be proud of.


Sarah has worked in the construction industry for more than 20 years. She started in a jobsite trailer working for one of region’s most respected general contractors. There she created a love for the industry and a basis for her career. After college, Sarah spent time with a CPA firm auditing construction companies and working on forensic auditing cases. Before Catalyst Builders she spent many years consulting for local and internationally based construction companies and developers.


Outside of work, Sarah and her husband stay busy with their two daughters who are very active in school activities, volleyball, and dance. As a family they love outdoor sports and working out at the gym together.



Doug Gray

Chief Operating Officer

As the leader of a premier Foothills based construction company, Doug demonstrated a pattern of continuous growth in areas of responsibility, work-load and scope. The company successfully completed building custom homes, multi-family homes, local churches, Class A office buildings, tire stores, coffee houses, fast food restaurants and manufacturing facilities. Doug’s thorough background of all residential, multi-family and light commercial construction trades and his keen business sense allowed him to create one of the most diversified construction companies in Northern California.


He has lived in the Foothills since 1979, has been happily married for 27 years and has three sons. His interests include residential and commercial construction, architecture, golf and coaching his sons’ Little League teams for many years.


  • Former Director for the Placer County Contractor’s Association
  • Sacramento Business Journal’s #1 Custom Home Builder two years in a row
  • Northern California Building Industry of America (BIA) awards for Best Exterior Image, Best Floor Plan, Best Kitchen, Best Master Suite, and the coveted Best in Show categories
  • Nominated for Contractor of the Year by the Sacramento Chapter of Subcontractors and Contractors Association of Truckee Tahoe
  • First certified Placer County Insulated Concrete Form (ICF) homebuilder
  • Served as a member of the Boys and Girls Club Board of Trustees



Kevin Hall

Project Director, Commercial Division

As project director, Kevin is responsible for the construction process from pre-construction services to closeout on all commercial projects. He works closely with the project team and serves as the point of contact for each of his clients. Kevin has a strong working relationship with the owners, architects, engineers and subcontractors resulting in successful construction projects and experiences.


Kevin has worked in the construction industry for over 25 years and has completed a variety of projects including restaurants, retail landlord work and tenant improvements, warehouses, Cal Trans, schools, and both private and public works projects. These projects range from a simple storefront replacement, to ground up construction, to an award winning co-working space in the Bay area for the top mall developer in the country.


Kevin and his wife have been married for 16 years and have two daughters who keep them very busy. Kevin enjoys playing sports, fishing, golfing and hanging out with the family.



Aaron Brown

Project Director, Residential Division

Aaron has over 30 years of experience in luxury home construction. Born and raised in Southern California, he started in the real estate industry at the age of 17 working for local high-end builders in land acquisition and entitlement. In his early 20’s Aaron entered the luxury home building industry as a superintendent, and shortly moved-on to become a project manager with Finton Associates; a premier estate builder in the Beverly Hills / Bel Air / Holmby Hills region. Aaron eventually owned and operated his own luxury homebuilding firm for 15 years before relocating to Northern California in 2015.


Aaron and his wife now live in Nevada City and have three children spread-out across the states in California, Tennessee and Maryland. They enjoy hiking with their two crazy dogs, floating on a nearby lake, and good conversation with friends over dinner and a great bottle of wine. Most of all they love traveling to spend time with their children and two grandchildren.



Corey Macintyre

Project Manager

Corey is a detail-oriented construction manager who comes to Catalyst with more than two decades of experience in the industry. A native of British Columbia, Corey began his career working on high-rise condominiums for Intergulf Development Group in downtown Vancouver. After moving to Sacramento in 1998, he spent a decade working in residential construction management, including three years as a Field Manager for Centex Homes and three years as a General Superintendent for John Laing Homes.


After obtaining his California general contractor’s license and completing the UC Davis Construction Management Certification Program, Corey branched out into other ares of construction, including contracting with the California Highway Patrol and Worker’s Compensation Board to oversee various projects on their properties, as well as managing residential remodels, commercial tenant improvement and property management improvement projects and providing maintenance and remodeling on bank-owned properties in the Greater Sacramento area. From 2016 to 2018, he served as the owner’s liaison during the construction of an $8 million single-family residence overlooking Folsom Lake.


Corey and his wife Kirsten can often be found on the lacrosse field, cheering on their daughter Kate (St. Francis High School, ’19) or son Alex (Jesuit High School, ’21). Corey also enjoys any outdoor activities and rebuilding classic cars.



Mike Feuz

Project Manager

Mike comes from a construction family – his father, brothers, sister and daughter have all made lifelong careers in the construction industry. After graduating from college, he started as an apprentice carpenter in Sacramento and has been a carpenter, Superintendent and Project Manager and has taken on various leadership roles in the Sacramento and Bay Areas. After a recent stint in the Bay Area as Project Executive on multifamily and commercial projects for a leading San Francisco general contractor, he’s back in Roseville where he’s lived for 35+ years where he and his wife raised their three children.


A builder at heart, he enjoys the process of working through the details of each project and coordinating the efforts of the designers, subcontractors and owners to have the best possible experience on the way to building a home that realizes the homeowners dreams.



Leonard Stewart

Field Operations Manager

Leonard brings over 23 years of field and project management experience, with an additional five years experience in hands on framing and finishing work.


His passion is to build in beautiful Lake Tahoe and it’s surrounding areas. He enjoys everything about the building process, from the complex and challenging designs to the interaction with everyone involved as well as the design process through the completion of the home and ultimately delivering the dream that was envisioned by the homeowner with everything that they wished for.


Leonard has lived in the Lake Tahoe area for 25+ years. The reward of building the most unbelievable homes imaginable is what brought him here. He used to vacation in Tahoe and and wondered what it would be like to enjoy that every day. He went back home after a vacation there in 1993, quit his career and moved there 3 months later to start his dream of building homes. This has been a career choice that he made that he has no regrets over as he truly enjoys what he does every day.



Tom Allison

Specialty Projects Team

As a seasoned General Contractor since 1981, Tom Allison proudly joined Catalyst Builders as part of their building team in 2019.  As part of the Catalyst team, Tom works closely with owners, designers, sub-contractors, architects, and consultants to ensure high quality, streamline production, and facilitate open and effective communication.


His years of experience in both commercial and residential construction include:


  • A successful commercial construction company he launched, completing over 1M square feet of high-end tenant improvements. His areas of expertise and passion specifically targeted high-end complex remodels as well as the renovation and rebuilding of distressed or outdated projects.
  • His hands-on skills in the tile and masonry industry to start up a high-end granite fabrication shop using state of the art equipment to produce fine counter tops.
  • Working with an international developer to build luxury villas and beach front homes in Costa Rica—a $40M renovation.


Tom has lived in Placer County for 40 years and still happily married to his high-school sweetheart.  Together they have successfully raised their 4 children. He loves spending time with his family, leading a men’s workout group, hiking, and outdoor activities.



Eddie Guerrero


Eddie has been building custom homes in the Lake Tahoe area for over 16 years. He started at Catalyst Builders performing framing and has since moved into supervising ongoing projects in the Lake Tahoe area. Eddie is passionate about his work, making sure to listen to clients about their wants and needs.


As a hands-on supervisor, Eddie is known for his ability to get his hands dirty and work alongside our crews. One of the things that sets Eddie apart is his ability to communicate fluently in both English and Spanish. This skill proves invaluable when working on job sites with diverse crews.


Outside of work, Eddie is a devoted husband and father of 3. He enjoys softball and volunteering at his church.



Jennifer Massa

Project Accountant

Jennifer Massa brings over 20 years’ experience in accounting, bookkeeping, and office management to the Catalyst team. A professional in construction finances, she has an acute eye for details and figures.


Jennifer’s experience is founded on being a partner in a successful general contractor company. That partnership led her to manage multiple construction accounting jobs over the years. Working for Catalyst Builders is an opportunity to put all the experience she has gained in the construction industry into one office.


Jennifer has an appreciation for the great outdoors. She loves to travel and spend as much time as possible with her daughter and amazing grandbaby. An active volunteer, Jennifer has mentored women’s groups and troubled teens. She has been involved in programs to feed the homeless and invalid. She is also passionate about animal rescue and has fostered many animals.