Attention Multi-Family Developers, Business Owners, and 1031 Exchange Buyers off the 5 Fwy - Red Hill Ave. Rare Tustin opportunity, permitted office space with R3 high-density residential zoning and multiple exit strategies. Operating as a professional office since the 1980s (improved 2020), this 1,574 SF standalone building on a 5,750 SF lot is move-in ready for immediate use or primed for redevelopment. The following professional office uses are explicitly permitted under the Tustin City Code and/or consistent with allowed professional office use at this location: Law & Legal Services, CPA & Accounting, Medical (General Practice, Family Medicine, Internal Medicine), Dental, Oral Surgery, Orthodontics, Chiropractic, Physical Therapy, Occupational Therapy, Speech Therapy, Mental Health & Counseling, Psychiatry, Psychology, Ophthalmology, Optometry, Podiatry, Surgery (Outpatient), Physician & Surgeon, Architecture, Drafting & Design, Engineering, Civil & Structural Engineering, Land Planning, Surveying, Real Estate, Mortgage & Lending, Insurance, Financial Planning & Wealth Management, Marketing & Advertising, Graphic Design, Interior Design, Creative Agencies, Tech Startups & Consultants, MedSpa (Outpatient), Wellness & Integrative Health, any professional licensed by the State of California to practice the healing arts in an outpatient setting. Per Tustin City Code, additional uses not listed above may be permitted at the discretion of the Community Development Director and/or Planning Commission upon determination of similar use. Buyer to verify all permitted uses with the City and County. Shovel-ready infrastructure with plumbing and utilities already in place for two bathrooms and a full kitchen, dramatically reducing future conversion costs. R3 zoning allows for multi-family, condo, townhome, ADU, or mixed-use development. Multiple exit strategies: owner-users build equity while occupying, investors lease now and redevelop later, developers maximize R3 density, or live/work buyers convert to residence plus ADU income. High-visibility Red Hill Ave location with exceptional I-5 Freeway access and strong daily traffic count. Use it. Lease it. Build it. The options are yours.

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Property Details of 13691 Red Hill Avenue

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Listed by Zoran Grujevski of Rubio Real Estate (909.255.1126)

Based on information submitted to CRMLS as of May 15, 2026 6:25 PM EDT . All data is deemed reliable but is not guaranteed accurate by the MLS. All information should be independently reviewed and verified for accuracy. IDX information is provided exclusively for consumers’ personal, noncommercial use and may not be used for any purpose other than to identify prospective properties consumers may be interested in purchasing.

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