Wooden cohousing homes surrounded by trees at Trillium Hollow.

Trillium Hollow Cohousing Community

  • Communities

About the Communities

  • Established
  • Home-sharing
  • Suburban

Founding year

  • 1991

What we do

We are a suburban cohousing community nested in 4 acres of lush, forested wildlife setting, with a creek and evergreen firs. Trillium Hollow is located minutes from downtown Portland, within walking and biking distance of mass transit, parks, schools (Beaverton school district), shops, and medical facilities.
Our community includes 28 self-sufficient apartments (studios, one-, two-, three-, or four-bedroom units) with one stand-alone unit, all 29 owned as condominiums. Our common facilities including a 3,600-sq-ft Common House with three guest rooms and generous dining/meeting spaces; indoor and outdoor play areas for children; a workshop; hot tub; 24/7 internet; community laundry facilities; native-plant landscaping; and organic community garden.
Our shared community life at Trillium is active: Members gather frequently for meals, work parties, celebrations, and social activities. Our regular celebrations include Winter Solstice, Talent/No Talent Show, Founders’ Day, summer bash and Halloween. We are a caring, supportive, consensus-based community, seeking to live lightly on the land, working cooperatively with our surrounding neighbors, valuing participation in our community, and living simply.
Our vision is to create and live in a community that fosters harmony with each other, the larger community, and nature.

Our Mission

We, the members of Trillium Hollow Cohousing Neighborhood, commit ourselves to the creation and maintenance of a supportive, enriching, and purposeful community that fosters the spiritual connection among ourselves, others, and the earth through simplicity, cooperation and service.

  • Purpose
  • Home-sharing
  • Community type
  • Cohousing
  • Activities
  • Property management

Commemorative dates

  • January 1, 1991
  • Started planning
  • January 1, 1998
  • Started living together

Gallery

  • 43 Total members
  • Open to new members
  • Open to visitors
Total
55

How to join

We encourage prospective members to participate in our Path to Neighborhood process to discern if Trillium & cohousing is right for them.

Basic expectations or agreements for members

We hold a regular orientation tour on the first Saturday of every month. Please inquire for specific availability.
Additional tours are scheduled as necessary. Email us at in**@************ow.org for more information.

Primary decision-making authority

  • All Community Members Together

The whole membership decides collectively.

Decision-making process

  • Modified Consensus

Generally seek agreement, but have backup methods when consensus isn’t reached.

Governance structure

  • Collaborative/Horizontal

Power and responsibility are shared relatively equally among members.

Conflict resolution approach

We are a consensus based community and we work through teams. Each team has a lead person that rotates over time. See our website for a description of our teams, and to see how we manage our maintenance and community building.
Proposals for community consideration usually come from our work teams and are presented at Community Meetings and a yearly HOA budget meeting, for consideration by the whole community.

Economic model

  • Independent Finances

Members maintain separate personal finances with minimal sharing.

Economic scenarios for this community

  • Members need to pay fees, dues, or similar to live there on a per month or per year basis
  • There is a labor obligation
  • Members typically need to have their own job or other personal source of income to cover their expenses while living in the community?

Additional economic information

Regular fees: Yes
Labor: Yes (2 hrs/week)
Members with pre-existing debt: allowed
As part of our work share policy members are expected to contribute 6 hours per month for each resident adult to maintenance of the property and participate on one or more teams.
We are legally a condominium association. Ownership or rental of a unit and payment of monthly HOA dues are the only fees.
We share the expense of common maintenance, electricity, water, etc. as part of our monthly assessments, as in any condominium association.

Shared resources and amenities that are accessible to everyone in the community

Common House, Garden(s), Greenhouse(s), Workshop, Hot tub or hot springs, Large Scale Kitchen, Fire pit, Swingsets & play areas, Internet

Frequency of communal meals

  • About once a week

Significant food acquisition practices

  • Locally sourced

Dietary type

  • Vegetarian Only

Dietary restriction

  • People can cook and eat what they want in their own residence

Community activities and engagement

  • Neighborhood, Community Housing, or Homeowner's Association

Substance use culture

  • Substance use appears in public spaces but no pressure
  • Substance use occurs primarily at celebrations or ceremonies
  • Religions
  • Christian
  • Buddhist
  • Jewish
  • Wiccan, Paganism, or Earth Religions
  • Unitarian Universalist

Gender composition

  • Roughly balanced (no group over 60%)

Age demographics

  • Family-focused (many children and parents)

Property status

  • Privately owned

Property owner

  • By a Land Trust, Home Owners Association, or corporation

Setting

  • Suburban

Residential areas outside city centers but within metropolitan regions.

Community type

  • Cohousing

    Private homes with shared common facilities, designed for neighborly
    interaction while maintaining independence.

Self-produced energy

  • Up to 33%

Self-produced food

  • Up to 33%

Local, organic, or fair trade food

  • Up to 33%

Food systems

  • Community garden
  • Greenhouse / aquaponics
  • Land area size
    4 acres

Guest Book

Written reviews are available for plus members. Click here to upgrade.

Location

  • Oregon, United States

Trillium Hollow Cohousing Community

Needs and Offers

Offer
  • Real Estate For Sale
3 weeks ago

2 Units Available in Forest Grove, OR - Where Town Meets Country!

Two Homes Available at Green Grove Cohousing – Forest Grove, OR Discover Green Grove Cohousing, a fun-loving, vibrant, family-friendly community that embraces environmental sustainability, social justice, community service, and the arts in the heart of Forest Grove, home to historic Pacific University. Enjoy the perfect balance of country living just minutes from town. With just nine privately owned homes on five natural acres, Green Grove offers a rare opportunity to live independently while enjoying an intentional, connected community. Shared amenities include a spacious common house with guest accommodations, gathering and entertaining space, play and art areas, a large woodworking shop, ample storage, organic vegetable and flower gardens, fruit trees, a chicken coop, a 30,000-gallon rainwater catchment system for irrigation, 14.7 kW of solar power supporting the common infrastructure, carports with living roofs and EV charging capability, and beautifully maintained grounds with buried utilities and walking paths. Homes are thoughtfully arranged around a shared village green, creating opportunities to connect with neighbors while preserving the privacy of your own home. 3926 Coho Cir | $595,000 3 Bed | 2 Bath | 1,475 SF A bright, detached two-story home featuring a main-level bedroom and full bath, bamboo floors, quartz countertops, high ceilings, abundant natural light, and beautiful Mt. Hood views. Thoughtfully designed for flexible living with modern finishes and energy-efficient comfort. MLS#: 704265931 3934 Coho Cir | $615,000 2 Bed | 1 Bath | 1,400 SF A beautifully designed single-level detached home with vaulted ceilings, stunning Mt. Hood views, radiant heated
Offer
Offer
  • Real Estate For Sale
2 months ago

“Lots” of Goodness For Sale!

Are you seeking to live in a sustainable, wellness-oriented community that prioritizes nature and environmental conservation? Living Well Ecovillage offers the perfect opportunity to be part of a vibrant, self-sufficient community committed to holistic health and ecological harmony. Available lots are equipped with city utilities and fiber internet access. Located in a unique mixed-use community with a variety of land uses planned for the future, including small business/commercial spaces, tiny houses, cluster housing, and a 10-acre farm. Currently, there are still 7 lots available. The Ecovillage is home to a diverse range of homes, such as timber frame, Deltec, hempcrete, and Net-Zero energy designs—all built with green building principles in mind. This community prioritizes sustainability and wellness in every aspect of life. About the Living Well Ecovillage Spanning 126 acres, the Living Well Ecovillage is bordered by the Deep River and Sandy Creek, offering stunning natural beauty and a tranquil environment. The Ecovillage includes shared spaces like a community garden, a Greenway/Rail Trail, and a neighborhood park. Over 53 acres of natural land buffer the river and creek, preserving the area’s pristine beauty and offering residents a true connection to nature. Your Dream Home Awaits Find your ideal spot to build your sustainable home, surrounded by trees, rock outcroppings, and abundant wild edible plants. Experience breathtaking views and a peaceful setting, perfect for those seeking a slower, more connected way of life. A Community That Supports Wellness The Living Well Ecovillage is not just about space—it’s about community. With access to the Folk School, residents engage in hands-on learning, sustainable practices, and personal growth, fostering a sense of belonging and purpose. Perfectly Located Just
Offer

Information

Communities

A residential project: people live here as their primary home.

Organizations

An institution, business, network, or project that isn’t a residence (e.g. a learning center, farm, or network with no one living there full-time).

Plus Community Memberhsip

  • Find people with Profile Match
  • Access to your community listing statistics
  • Create Discussion Groups
  • 50% commission when your members purchase a Plus Membership
  • Access to our affiliate program
  • Member badge on your community profile
I am an official member of this community
Disclaimer
I affirm that my information is accurate and I am authorized to manage this listing
Foundation for Intentional Community FIC Member badge logo.

Free Plan

Free Membership
Free

Intentional Advertising

  • Subtotal

    {{ currencyFormat( pricing_summary.total_amount ) }}

Icon representing community connections and collaboration for intentional communities.

Plus Membership

  • Find communities with Profile Match
  • View detailed reviews about communities
  • Direct message and view contact information
  • Create free listings in Needs & Offers
  • Plus Member resources in CommUniversity
  • Plus Member badge on your profile