Best Property Manager Companies in Diamond Bar, California, 2025

Clockwork Property Management is a professional property management company that specializes in managing single-family homes and small multi-family properties in Southern California. They offer a range of services including leasing, tenant screening, rent collection, maintenance, and financial reporting to help property owners maximize the return on their investment.

Mesa Properties is a full-service property management company that specializes in managing residential and commercial real estate in the Inland Empire and High Desert regions of Southern California. They offer a range of services including tenant placement, rent collection, maintenance coordination, and online owner and tenant portals.

East West Properties is a leading property management company serving the Greater Los Angeles area, with a focus on residential and multi-family properties. They provide professional, transparent, and responsive services to property owners, ensuring their properties are well-maintained and tenants are well-cared for.

Grace and Glory Real Estate Group is a comprehensive real estate investment management services company with 20+ years of experience in the United States. They specialize in real estate development, property investment, long-term rentals, and short-term rentals, catering to clients in the residential, multi-family, and commercial real estate sectors.

The Abbey Company is a commercial real estate investment and property management firm that acquires and operates multi-tenant properties across California, with a focus on delivering a tenant-centric experience for its diverse portfolio of commercial tenants.

Sun Stone Property Management provides comprehensive property management services to owners of residential, multi-family, and commercial properties in Pomona, CA and the surrounding areas. They offer expertise in tenant screening, rent collection, evictions, legal guidance, and property maintenance, helping property owners streamline operations and maximize returns.

Real Property Management Fairmate is a professional property management company that specializes in managing residential rental properties in the San Gabriel Valley area of California. They offer a full suite of services, including tenant screening, leasing, maintenance, and evictions, to help property owners maximize the return on their investment while minimizing hassle.

The Weldon L. Brown Company is a well-established Homeowners Association (HOA) and Property Management firm that has been providing professional HOA management, advisory, and community association management services to clients in Riverside County and San Bernardino County since 1963. They specialize in managing HOAs, commercial properties, apartments, and office buildings.

Primior is a vertically integrated real estate asset management firm that provides comprehensive investment advisory, property management, and development management services to individual and institutional investors. The company specializes in maximizing returns through innovative strategies across residential, commercial, and mixed-use real estate sectors.

Allied Management, Inc. is a property management company that specializes in managing residential and multi-family properties across various cities in California, including Upland, Rancho Cucamonga, Ontario, and Chino.

Primior is a vertically integrated real estate asset management firm that provides comprehensive investment advisory, property management, and development services to individual and institutional investors. The company specializes in maximizing returns through strategic acquisition, efficient management, and innovative solutions like real estate tokenization.

Cornerstone Property Management is a full-service property management company that specializes in managing residential, multi-family, and commercial properties across 17 cities in California. They offer a wide range of services, including tenant screening, property maintenance, and financial management, to help property owners maximize their returns and minimize their headaches.

Allied Management, Inc. is a property management company that specializes in managing residential and multi-family properties across various cities in California, including Upland, Rancho Cucamonga, Ontario, and Chino. They offer professional services such as tenant screening, maintenance support, and eviction assistance to help property owners effectively manage their investments.

Rentble is a full-service property management company serving residential and multi-family properties in the greater Los Angeles area, including Diamond Bar, Anaheim, Long Beach, and surrounding cities. They provide comprehensive services to maximize returns for property owners, including online rent collection, data-driven pricing analysis, virtual 3D tours to market vacancies quickly, and transparent accounting. With a tech-forward approach and expertise in the local market, RENTBLE aims to make property management effortless for owners.