
World-class experience, dedicated to making our clients' companies, projects and teams successful.
Thornton Management Group services the Western United States in all facets of commercial and residential real estate development, construction management and organizational consulting.

About Us
Founded by John Thornton after 30 years of leading large California General Contractors where he gained deep experience in strategic planning, building world class teams and successfully completing hundreds of complex building projects with repeat clients with a total value in excess of $3B in new construction and renovations.
Multiple companies, under his leadership, were recognized for being the fastest growing and best places to work as published in numerous California Business Journals.
Thornton Management Group was established to utilize this unique experience in collaboration with key strategic partners to provide clients with unparalleled services to successfully grow their businesses, develop top performing teams and successfully deliver real estate development projects.


DEVELOPMENT & PROGRAM MANAGEMENT
Feasibility & Due Diligence
Site Selection
Acquisition Analysis
Financing Support
Programming & Value Analysis
Master Planning & Design Management
Consultant Coordination
Entitlement Management
Permitting Coordination
Preconstruction Management
Budget Development
Overall Program Scheduling
Constructability Reviews
Risk Management
Value Engineering
FF&E Procurement & Coordination
Life Cycle Cost Analysis
Disposition Analysis
Lease Coordination

PROJECT & CONSTRUCTION MANAGEMENT
Delivery Method Evaluation
Procurement, Bidding & Contracting
Detailed Contract Reviews
Schedule Analysis
Project & Document Controls
Cost Estimating
Budget Management
Quality Control Evaluation
Design Administration
Construction Administration
Phasing, Relocation & Move Management
Occupancy Coordination
Project Accounting
Fund Control Oversight
Mediation & Settlement Negotiation
Claim Analysis
Commissioning and Project Close-Out Coordination

MANAGEMENT & ORGANIZATIONAL CONSULTING
Leadership & Organizational Development
Executive Coaching
Strategic Planning
Business Plan Creation
Key Performance Indicator Creation
Team Building & Culture Development
Talent Recruiting & Retention
Compensation Program Development
Professional Training
Mentoring Program Creation
Presentation Skills Development
Succession Planning
Risk Management
Subsidiary Creation
Mergers & Acquisitions Consulting
Corporate Retreat Facilitation
Peer Advisory Group Facilitation
Keynote Speaking Engagements
BIOMEDICAL & LIFE SCIENCES
Completed Projects 10+
Total Square Footage 1,000,000+
Biomedical and life science projects including one of the largest blood processing plants in the country to state of the art laboratories build outs for major pharmaceutical and biomedical corporations.
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CLIENTS OUR TEAM HAS WORKED WITH
American Red Cross, Edwards Lifesciences,
Gilead Pharmaceuticals, Grifols Biologicals
CIVIC
Completed Projects 20+
Total Square Footage 1,000,000
Civic projects including performing arts centers, libraries, community and regional parks, community centers, public safety, civic centers, city halls, recreation centers and aquatic parks.
CLIENTS OUR TEAM HAS WORKED WITH
Cities of Beverly Hills, Cerritos, Jurupa, La Mirada, Laguna Niguel, Montclair, Moreno Valley, Newport Beach, Palmdale, Rancho Cucamonga, Westminster and Whittier. Counties of San Diego and Los Angeles. Water districts including Coachella Valley, Moulton Niguel and Irvine Ranch.
COMMERCIAL OFFICE
Completed Projects 15+
Total Square Footage 2,000,000
Office projects including ground up class A office buildings, medical office buildings and office tenant improvements.
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CLIENTS OUR TEAM HAS WORKED WITH
​BSH, Civic View Partners, Dreamworks, Extron Electronics, Incipio, Maglite, Qualcomm, Sony Studios, State Bar of California and Subzero/Wolf.​​​​​​​​​​​
EDUCATION K-12
Completed Projects 30+
Total Square Footage 1,000,000+
Public and private school projects including new campuses, classroom buildings, gymnasiums, sports stadiums and facility renovations.
CLIENTS OUR TEAM HAS WORKED WITH
Irvine USD, Colton JUSD, Coronado USD, El Segundo USD, Discovery Science Center, Glendale USD, Grossmont UHSD, Long Beach USD, Palm Springs USD, Pasadena USD, Rancho Sante Fe SD, San Jacinto USD, San Marcos USD, William S. Hart USD and Wiseburn USD.
ENTERTAINMENT & CULTURAL
Completed Projects 30+
Total Square Footage 3,000,000+
Entertainment and cultural projects including performing arts centers, theme park attractions, casinos, museums, churches, synagogues, television studios and production facilities.
CLIENTS OUR TEAM HAS WORKED WITH
Discovery Science Center, Dreamworks, Morongo, Pechanga, Disney, Knott’s Berry Farm, Universal Studios, NBC Universal, Seaworld, Sony Studios
HEALTHCARE
Completed Projects 10+
Total Square Footage 500,000
Healthcare projects including new patient towers and health facility renovations.
CLIENTS OUR TEAM HAS WORKED WITH
Cedars Sinai Medical Center, City Heights, City of Hope, Family Health Center, Harmony Health Center, Jewish Home of the Aging, Kaiser, Mission Hospital, Sharp Grossmont Hospital, Valley Presbyterian, University of San Diego and OTS Health.
HIGHER EDUCATION
Completed Projects 50+
Total Square Footage 2,500,000
Higher education projects including buildings dedicated to science, humanities, fine arts, student services, athletics, sociology, technology, health sciences, learning resource centers, student recreation centers and administrative centers.
CLIENTS OUR TEAM HAS WORKED WITH
Azusa Pacific University, Biola University, Cal Poly Pomona University,Caltech University, Chapman University, Concordia University, California State University (multiple campuses), Loyola Marymount University, University of California (multiple campuses), Whittier College and California Community Colleges (multiple campuses)
HOSPITALITY
Completed Projects 15+
Total Square Footage 1,000,000
Hospitality projects including ground up hotels, private clubs, country clubs, restaurants, hotel expansions and renovations.
CLIENTS OUR TEAM HAS WORKED WITH
Balboa Bay Club, Grand Californian Hotel, Huntington Hospitality, Mayer Corporation, Hyatt, Alterra Mountain Company, KSL Capital Partners, Marriott, Hilton, JC Resorts and Westgate Resorts.
INDUSTRIAL
Completed Projects 10+
Total Square Footage 4,000,000+
Industrial and distribution projects including logistics centers, distribution centers, manufacturing plants, food processing plants and maintenance vehicles service facilities.
CLIENTS OUR TEAM HAS WORKED WITH
GLP, Maglite, Matlack, UPS, Waxie and Whitewave Foods.
MULTIFAMILY & MIXED-USE
Completed Units 6,000+
Total Square Footage 3,000,000+
Multifamily and mixed use projects including high rise residential buildings, midrise apartment complexes and garden style apartment communities.
CLIENTS OUR TEAM HAS WORKED WITH
Shea Properties, UDR, Westar, Lennar Multifamily, Lowe Enterprises and Anderson Pacific.
RETAIL
Completed Projects 50+
Total Square Footage 5,000,000+
Retail projects including department stores, regional shopping malls, outlet malls, community shopping centers, grocery stores, car dealerships,
CLIENTS OUR TEAM HAS WORKED WITH
Bass Pro Shops, Whole Foods, Bloomingdales, Container Store, Westar, Federal Realty, JCPenney, Macy’s, Rothbart Development, Sudberry Properties, Frontier Investments, DJM, DDR, Sears and Target.
SELF STORAGE
Completed Projects 30+
Total Square Footage 10,000,000+
A wide range of self storage projects including multi and single story buildings as well as outdoor RV storage.
CLIENTS OUR TEAM HAS WORKED WITH
InSite Property Group, SecureSpace, Public Storage, Westport Properties, Baranof Holdings, American Recess, Frontera Properties, Laguna Canyon Group, Boulder Ridge Capital, Novo Properties and US Storage.
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SENIOR LIVING
Completed Projects 10+
Total Square Footage 500,000
Our team has led a wide range of senior and assisted living projects including independent living communities to assisted living facilities and skilled nursing care.
CLIENTS OUR TEAM HAS WORKED WITH
Belmont Senior Living, Westliving, Jewish Home of the Aging, Vivante on the Coast and Wellbrook Senior Living.
OUR EXPERIENCE

Featured Projects:
SecureSpace Avalon
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SecureSpace Brea
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SecureSpace Commodore
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SecureSpace Corgiat
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SecureSpace Essex
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SecureSpace Everett
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SecureSpace Firestone
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SecureSpace Glendale
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SecureSpace Martinez
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SecureSpace Nalley Valley​
​SecureSpace Palm Springs
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Secure Space Richmond
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SecureSpace San Bernardino
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SecureSpace San Jose
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SecureSpace Santa Fe Springs
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SecureSpace Seatac
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SecureSpace Signal Hill
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SecureSpace West Seattle
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SecureSpace Vallejo
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SecureSpace Vineland




LOS ANGELES, CALIFORNIA
The project consisted of the construction of a new three-story self-storage facility in the city of Los Angeles, totaling approximately 116,694 square feet of climate-controlled storage space utilizing masonry and load bearing metal stud construction on a former oil field site. Site improvements consist of grading and associated improvements including parking, landscaping, utility improvements across a total site area of 69,396 square feet (1.59 acres).
























































