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General Contractor – Construction Manager

Our Services

General Contractor B-General Building – Unlimited – 0077758

Competitive Bid


Design Build

Architecture blueprint with pen and ruler

Our Team

Kevin Zahm


There are no issues or complications only solutions, positive attitude and his commitment to the team’s success that has lead Kevin from a laborer back in Nebraska to his current role as President and qualified individual of OS Construction Services Inc.  His experience includes: small TI’s to multi-million-dollar projects; which include single to multi-story/multi-building developments and all aspects of the construction industry.  Kevin’s industry experience includes the Private, Public and Federal sectors.

Brad Bennett

Preconstruction – Project Manager

Brad has been in the Las Vegas market for the past 20 years and has numerous relationships with the subcontractors, Architects and Clients.   Brad’s professional experience includes: preconstruction, estimating and project management. He has provided his services on private, negotiated commercial work, design/build & design/assist as well as competitive bid projects. Delivery methods include GMP, shared savings clause, stipulated sum. Brad is the primary point of contact for the client, design team and OSCS staff. His experience includes; concrete tilt-up warehouses / industrial projects, commercial mid-rise office, class A office buildings, mid-rise and high-rise, wood-framed multi-family, tenant improvement (commercial, hospitality & medical, hospitality, medical facilities, religious, restaurants/retail) and CCSD projects.

Richard Frank

Project Manager / Estimator

Rich got his start in the construction business in the drywall trades in Montana.  His career spans public, private and Federal projects.

James Zebrowski

Director Special Projects

Jim started his career in Indiana as a plant safety manager for a TV glass manufacturer. Jim has run his own business in residential construction and the foreclosure industry. Jim manages the day to day operations and future forecasting for OS Construction’s special projects group. He manages the jobs Project Manager(s), Superintendents, estimators and office staff. He is responsible for job budgets, client relations, design/build projects and project schedules. Jim will coordinate submittals, owner’s, architects and consultant meetings. As Director of Special Projects, he will support construction on renovations/remodels, tenant improvements and potential ground-up expansion projects. Jim’s focus has been on the multi-family home renovation and commercial maintenance service area.

Ken Gustin


Ken’s career started working in maintenance and rapidly progressed to running projects.  He has honed his skills to include; superintendent, estimator, project manager/senior project manager, VP of construction to obtaining a B-1 General contractors license.

Myron Dodson


Myron’s career began as a graduate of the 4-year Carpenter Apprentice program in Las Vegas, NV.  As a General Foreman he has supervised crews up to 95 on a variety of projects.  He currently provides his services as OS Constructions Project Superintendent;

Brendan Frantz


Brendan graduated with a degree in HVAC Technology from College of Southern Nevada. He began his career as a HVAC Technician and moved up rapidly to Chief Engineer. In his present capacity as Superintendent, Brendan supervises 10 field technicians/trades personnel. He assigns all commercial building orders for OSCS’s Special Projects Group. He manages projects from design through completion while overseeing subcontractor budgets and critical path scheduling. Brendan maintains client interface and manages RFI’s CO’s, estimating and RFP’s.

Sarah Berkley

Office Manager

Sarah began her career as an executive contract administrator and has continued her upward progression in project administration, controller, field administrator, service dispatch, accounts receivable to her present position as office manager. She has worked for several major contractors in Nevada. Sarah is highly competent in a variety of software applications, understanding of general ledgers, income statements P&L’s and balance sheets. She has extensive construction accounting and job costing experience with a strong attention to detail, time management and office organization. She provides excellent customer service, phone manner and office etiquette.

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