Integrity. Commitment. Dependability.

Watt TowersSince 1962, Holwick Constructors has delivered high-quality general contracting services to businesses throughout the greater Los Angeles area. We are a family-owned general contractor headquartered in Woodland Hills, Ca. Our key personnel have nearly 100 years of industry experience. We’ve completed over 50 million square feet of tenant development throughout Los Angeles.

We’re committed to producing timely, budget-conscious construction projects that exceed our clients’ expectations. We’ve developed a strong network of respected subcontractors who we trust to deliver a superior finished product.

Safety is the top priority at every job site we manage. In fact, we have an in-depth OSHA safety program administered by Costello Safety Consulting, Inc. The program performs weekly on-site safety checks and works closely with our superintendents to ensure a safe working environment.

When you work with us, you’ll get more than just a general contractor. You’ll get a valuable business partner who will work diligently and creatively to find the best solutions for your specific needs.

Our Mission

Our mission is to provide exceptional general contracting services to businesses throughout Southern California.

We will meticulously oversee every detail of each project–from planning to completion–to ensure a high quality finished product.

We will embrace change and innovation while holding firm to the core values of our company: integrity, commitment, and dependability.

Our Team

Executive Team

Mike Holwick ~ President/CEO
Mike Holwick

Representing the third generation to oversee the family business, Mike proudly carries on the legacies of his father and grandfather before him. Since joining Holwick Constructors in 2002, Mike has overseen a multitude of construction projects covering over 1.5 million square feet of tenant space.

Mike joined the United States Marine Corps after high school and served in the reserves while attending San Diego State University, where he graduated magna cum laude with a bachelor’s degree in accountancy. Prior to joining Holwick, Mike worked at PricewaterhouseCoopers in the Audit and Business Assurance division.

Mike at-a-glance:

Education: Bachelor’s degree in accountancy, San Diego State University, 2000

Construction Management Certificate, UCLA

 Licensure & Certifications:

  • Certified Public Accountant
  • A,B,C16 & C36 Licenses

 Notable Projects:

  • Infinity Ward (Activision)
  • Tangram Interiors 
  •  Sony Pictures Entertainment

 Awards & Recognition:

  • Century City Chamber of Commerce Citizen of the Year, 2012
  • Honorable Discharge, United States Marine Corps
  • 2016 REmmy Award honoree for Tangram Interiors

Philanthropic Interests:

  • Marine Corps Scholarship Foundation
  • UCLA Mattel Children’s Hospital
  • Calvary Nexus
  • Family Service of Santa Monica
  • Teen Reach Adventure Camp
Tony Chiappetta ~ Executive Vice President of Operations

Tony is responsible for managing the day-to-day operations of the company.  He and his team work closely with Mike Holwick to ensure all client demands are met and that office/field personnel have the tools available to deliver a superior product.  Tony puts a priority on training and advocates an environment that focuses on internal growth within the company.  He firmly believes that the company should always provide the opportunity for success and never be a barrier to an employee’s career advancements.

Before becoming EVP of Operations, Tony was a Senior Project Manager at Holwick where he managed nearly two million square feet of tenant, repositioning and capital improvement projects.  Prior to joining Holwick in 2007, Tony held positions at Arthur Andersen, Huron Consulting Group and American Invsco.  Tony holds a BBA in Accounting from The University of Iowa and a MAS in Accountancy from Northern Illinois University.

As an executive, “I stress a proactive approach to all situations.  Construction brings a lot of unknowns on a daily basis but many issues can be planned for if proper preparation is a primary focus.  We take pride in our pre-construction efforts because a project’s success can be greatly aided during this phase.  It is my responsibility to ensure that Holwick is a leader in the industry and never loses the drive to improve.”

Tony at-a-glance:


  • Bachelor’s degree in business administration — accounting, University of Iowa
  • Master’s of Science — accounting, Northern Illinois University

Licensure & Certifications: 

  • Certified Public Accountant
  • Certified Fraud Examiner

Notable Projects:

  • Watt Companies
  • Equity Office Properties
  • JAKKS Pacific
  • Pandora
  • County of Ventura
  • Michelman & Robinson
  • NSBN
  • Resolution Economics
  • Amobee

Project Managers

Shay Flanagan ~ Senior Project Manager

Shay hay has been with Holwick Constructors since 2009 and comes from a management background at PwC.. As a senior project manager, Shay has deep technical tenant improvement construction knowledge that serves our clients and helps them comprehend and coordinate the more difficult areas throughout the construction process.

He prides himself on providing a quality product that meets schedules, is within budget and facilitates a smooth transition for when our clients occupy their new space.

Shay has a construction management certificate from UCLA. He also holds a bachelor’s degree in accounting and has obtained a certified public accountant certificate in Illinois, Wyoming and California

Shay at-a-glance:


  • Bachelor’s degree in accountancy
  • Construction Management Certificate, UCLA

Notable Projects:

  • Clearlake Capital Group
  • California Resource Corporation
  • Dial 800
  • Factual
  • Film Independent
  • Burnish Creative
  • Aquent LA
  • Winstar Properties

Licensure & Certifications: 

  • Certified Public Accountant
  • Construction Management

 Awards & Recognition: 

  • Nominated, 2014 Calibre Award, Workplace Small, Ace Media
Steve Light ~ Senior Project Manager

Steve has worked in the construction industry for over 35 years, starting in the carpenters union before becoming a superintendent and ultimately a project manager. Steve has performed over 5,000,000 square feet of tenant improvement and remodel work throughout the Los Angeles and Pasadena areas.

Mike Banyi ~ Project Manager

Mike has over 25 years in construction, starting in framing and drywalling and eventually moving up to a superintendent. He joined the Holwick team as a project manager in 2013.

As one of the more experienced team members, Mike holds a vast knowledge of all aspects of the construction industry. With Holwick, he has overseen approximately 500,000 square feet of tenant improvement projects.

Mike’s notable projects include the Mullin Automotive Museum in Oxnard and the Annenberg Space for Photography Skylight Studios in Century City, the latter of which was nominated for a 2014 Calibre Award.

Mike’s approach to construction project management is to simplify the process for the client. “I try to make things as simple as possible. I give them the time and attention they need. I am very hands on, I go to my jobs in the field and spend a lot of time making sure the job is done correctly and most importantly, in the safest and cleanest manner possible.”

Mike at-a-glance:


Over 25 years in the construction industry, starting as a laborer and moving up to superintendent and project manager.

Notable Projects:

  • Mullin Automotive Museum
  • Annenberg Space for Photography Skylight Studios

 Awards & Recognition: 

  • 2014 Calibre Award, Retail, Annenberg Space for Photography Skylight Studios
Jeff Nichwander ~ Project Manager

Jeff joined the Holwick team in 2012. His background includes multiple accounting and finance positions in retail, public accountancy, agriculture and title & mortgage industries.

Jeff hold’s a bachelor’s degree in accountancy from California State University, Fresno, and is a certified public accountant.

His notable projects with Holwick include Newmark Grubb Pearson Commercial and Equity Office Properties. He has completed roughly 350,000 square feet of TI projects totaling approximately $10 million in revenue.

Jeff at-a-glance:


  • Bachelor’s degree in accounting, California State University, Fresno
  • Certified Public Accountant

Notable Projects:

  • Equity Office Properties
  • Sony Pictures Entertainment, Inc.
  • Green Dot
  • Kilroy Realty
  • Transwestern
  • AMA Waterways
  • Miramax
  • Newmark Grubb Knight Frank LA
Patrick Spillane ~ Project Manager

Patrick joined the Holwick team in 2011 after graduating from the Limerick Institute of Technology in Ireland with a bachelor’s degree in construction economics and management (quantity surveying). He comes from a long background in construction with both of his parents working in the construction industry in both Ireland and the U.S.

Patrick started at Holwick as a project engineer and graduated through the ranks, becoming an assistant project manager and eventually an independent project manager. Since becoming a project manager, he has completed roughly 250,000 square feet of TI projects totaling $10 million in revenue.

As a project manager who has climbed the ladder at Holiwkc, Patrick prides himself in having a thorough understanding of all aspects involved in taking a project from start to finish. He is an example of what we strive for at Holwick, growth from within.

Patrick at-a-glance:


  • Bachelor’s degree in construction economics and management

Notable Projects:

  • Activision Blizzard Studios
  • UCLA Health
  • John A. Martin & Associates, Inc.
  • Trevarch Stairwell
  • HKS


Entertainment, Sports & Leisure: Soothe, Activision Blizzard, Trevarch, Legendary

Law and Professional Services: John A. Martin & Associates, Pacific Development Partners, HKS

Josh Williamson ~ Project Manager

Josh began working with Holwick Constructors in 2015 as a project engineer, receiving promotion to assistant project manager and then project manager shortly after.

Joshua holds a bachelor’s degree in construction engineering and management from California State University, Long Beach.

Beginning in the industry at age 15, he brought previous construction experience in a combination of field construction and office supervisory roles across multiple construction trade disciplines.

Since starting at Holwick, Joshua has participated in over 250,000 square feet of tenant improvement projects throughout Southern California. In addition to his TI experience, Joshua has worked on several capital improvement jobs including exterior renovation and base building work.

Josh at-a-glance:


  • Bachelor’s degree in construction engineering and management – California State University, Long Beach

Notable Projects:

  • Pandora
  • 3000 S Robertson Exterior Renovation
  • Stone Canyon
  • Watt Plaza Building Management Office