Since 1971, Horizon Resources, Inc. has managed commercial properties across Carlsbad and San Diego County from its Palomar Airport Road office near the Bressi Ranch commercial district. HOA financial reporting and reserve-study compliance require coordination with accounting firms such as La Costa Tax & Accounting for annual budget filings and Davis-Stirling Common Interest Development Act audit requirements. The firm specializes in professional and medical-office HOA management, handling CC&R enforcement, vendor bidding, and strategic reserve budgeting for condominium associations across Carlsbad, Poway, Escondido, San Marcos, Vista, and Oceanside. An in-house maintenance division manages tenant improvements through full-scale commercial renovations, while landscape contract oversight includes coordination with suppliers including Armstrong Garden Centers for common-area planting and irrigation system sourcing. The firm's most complex portfolios involve multi-building commercial campuses requiring simultaneous lease administration, capital-improvement project management, and municipal code compliance across multiple San Diego County jurisdictions.