Three Communities, One Guide

Explore the Best 55+ Communities
in Contra Costa County

Active Adult Living

Whether you’re looking for affordable active adult living, luxury resort amenities, or a vibrant social lifestyle, Contra Costa County offers exceptional 55+ communities to fit every stage of retirement.

Each neighborhood has its own unique personality, amenities, home styles, and HOA structure. Discover which community best fits your next chapter.

Brentwood, California

Summerset I, II, III & IV

Affordable Active Adult Living with Exceptional Value

Summerset is one of Brentwood’s most popular 55+ destinations, offering gated neighborhoods, beautifully maintained single-story homes, and an active lifestyle at one of the lowest HOA costs in the Bay Area.

Residents enjoy clubhouses, swimming pools, fitness centers, pickleball and tennis courts, walking trails, golf, and a full calendar of social events—all without paying luxury-level HOA fees. It’s an ideal choice for buyers looking to maximize value while enjoying a vibrant, low-maintenance lifestyle.

Home Prices
Approximately $500,000–$850,000+
HOA Dues
Approximately $140–$200 per month

Why Buyers Love Summerset

  • One of the most affordable gated 55+ communities in Northern California
  • Low monthly HOA fees
  • Four unique neighborhoods to choose from
  • Single-story homes with thoughtful floor plans
  • Active clubs and year-round social events
  • Golf course options nearby
  • Convenient access to shopping, restaurants, medical facilities, and local wineries

Brentwood, California

Trilogy at The Vineyards

Luxury Resort Living Every Day

For those seeking an elevated retirement lifestyle, Trilogy at The Vineyards delivers one of the finest luxury 55+ experiences in Northern California. Developed by Shea Homes, this gated community blends elegant homes with resort-caliber amenities designed for wellness, recreation, and connection.

Residents enjoy a private clubhouse, state-of-the-art fitness center, indoor and outdoor pools, pickleball and tennis courts, walking trails, on-site dining, wine clubs, and a full-service spa—creating the feeling of living at a luxury resort every day.

Home Prices
Approximately $700,000–$1.4 million+
HOA Dues
Approximately $400–$500 per month

Why Buyers Love Trilogy

  • Premier luxury 55+ community in Brentwood
  • Beautifully designed newer homes
  • Full-service spa and wellness center
  • Resort-style pools and fitness campus
  • Private restaurant and café
  • Extensive social calendar and clubs
  • Upscale, vacation-inspired atmosphere

Walnut Creek, California

Rossmoor

Northern California’s Premier Active Adult Village

Rossmoor is much more than a neighborhood—it’s an entire private village designed exclusively for active adults. Spanning over 2,000 acres, Rossmoor offers one of the most comprehensive retirement lifestyles in the country with hundreds of clubs, lifelong learning opportunities, arts, entertainment, golf, fitness, and social activities.

While Rossmoor has higher HOA dues and a one-time buyer transfer fee, many residents consider it well worth the investment because so many services, amenities, and activities are included.

Home Prices
Approximately $300,000–$2 million+
HOA Dues
Approximately $800–$1,300+ per month
(Varies by Mutual and home type.)
Buyer Transfer Fee
One-time membership transfer fee paid at closing

Why Buyers Love Rossmoor

  • One of the largest active adult communities in the United States
  • More than 200 clubs, organizations, and hobby groups
  • Two championship golf courses
  • Fitness centers, swimming pools, pickleball, and tennis
  • Performing arts center and educational programs
  • Art studios, woodworking shop, ceramics, and creative spaces
  • Gated security and community shuttle service
  • Close to downtown Walnut Creek, shopping, dining, and BART

Let Me Help You Find the Right Community

Choosing the right 55+ community is about more than comparing home prices. It’s about finding a neighborhood that matches your lifestyle, hobbies, budget, and long-term goals.

Whether you’re downsizing, relocating, or planning for retirement, I’ll help you compare communities, understand HOA costs and amenities, tour homes, and negotiate with confidence—so you can enjoy the next chapter of life in a home that truly fits your story.

Because every home has a story—and your next one starts here.

Ready to explore a 55+ community?

Get a free home valuation or reach out to start the conversation.

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Common Questions

55+ Communities: Common Questions

Do Summerset, Trilogy and Rossmoor all have the same HOA structure?

No. Summerset is actually four separate associations (Summerset I, II, III and IV), each with its own board and dues. Trilogy’s dues and any transfer fees vary by home and change at renewal. Rossmoor is governed as 23 separate Mutual corporations, each with its own assessment. Amanda pulls the current figures for a specific home rather than quoting one number for a whole community.

Is Summerset, Trilogy or Rossmoor assisted living?

No. All three are independent-living, age-restricted communities, not continuing care or skilled nursing, despite sometimes appearing on senior-living directories alongside those options.

Is there a golf course inside these communities?

It depends on the community. Trilogy residents play at the 27-hole Brentwood Golf Club down the road rather than a course inside the gates. Rossmoor has 27 holes across two courses on-site. Summerset offers nearby golf course options rather than a course within the community itself.

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