If you are looking at Black Diamond, you are not just choosing a home. You are also choosing how a community is being built around you. That can feel exciting, but it can also raise smart questions about what is open now, what is still planned, and how these neighborhoods may function over time. In this guide, you will get a clear, practical look at Black Diamond’s master planned communities so you can make a more informed move. Let’s dive in.
Why master planned communities matter
Black Diamond stands out because the city is actively managing growth through master planned developments. According to the city’s Master Development Review Team, it oversees land use and civil projects within these large developments, and current public notices continue to show activity tied to Ten Trails and Lawson Hills.
That matters to you as a buyer or seller because these are not static neighborhoods. They are evolving communities shaped through phases, reviews, plats, and amendments over time. The city also describes its growth approach as well planned and environmentally sensitive, with an emphasis on protecting Black Diamond’s rural character.
Ten Trails at a glance
Ten Trails is the most visible master planned community in Black Diamond today. Community materials show a neighborhood that includes Civic Park, Village Green, Tahoma Place, a retail village and commercial area, a school site, wetland buffers, parks, common areas, and multiple builder sections.
One of the most important things to understand is that Ten Trails is still being phased in. The current maps distinguish between existing features and future trails, future park space, and future retail areas. The developer materials also note that maps are for illustration only and may change without notice.
What is open now versus planned
If you are touring Ten Trails, it helps to separate today’s reality from future vision. Some amenities and neighborhood sections are already in place, while others are still upcoming.
That means your experience may vary depending on the phase, builder, and location within the community. Before you buy, it is worth confirming exactly what is complete, what is under construction, and what is still planned for your area.
Amenities that shape daily life
Current Ten Trails amenity materials list a wide range of features, including:
- Basketball courts
- Bocce ball
- A zip line
- Playgrounds and slides
- An outdoor theater area
- Fire pits
- An herb garden
- Intercommunity trails
- Hiking trails
- Multiple parks
- Future shopping and retail
- Future schools
For many buyers, these amenities are part of the appeal. They support an organized neighborhood feel and create shared spaces that may factor into how you use the community day to day.
Trail access and outdoor setting
Ten Trails also draws attention for its outdoor setting. Community materials reference nearby Lake Sawyer, the Green River, and Black Diamond Open Space, while King County describes Black Diamond Open Space as a 1,240-acre forested park with 17 miles of trails.
There is also a longer-term regional trail project in design. King County says the Green to Cedar Rivers Trail is planned as an 11-mile corridor connecting the Cedar River Trail to Flaming Geyser State Park, with Black Diamond identified as one of the primary corridor communities.
For buyers who want newer housing with access to open space and trails, that combination is a big part of the local draw. It gives Black Diamond a different feel than many more built-out suburban areas in King County.
Home options in Ten Trails
One of Ten Trails’ defining features is its mix of housing types. Current builder pages show attached townhomes, detached single-family homes, duplex-style homes, rental options, and 55-plus active-adult product.
The community also lists several current builders, including Lennar, Regency by Toll Brothers, Conner Homes, and Richmond American Homes. In the gated Enclave section, materials reference Ichijo, MainVue, and Oakridge, with the Enclave described as offering larger homesites than other developed parts of the neighborhood.
Variety in size and style
Ten Trails specifically markets itself as offering a variety of home styles, sizes, plans, and prices. That can be helpful if you are comparing options as a first-time buyer, move-up buyer, downsizer, or someone looking for low-maintenance living.
For example, current Regency by Toll Brothers materials say that neighborhood is planned for more than 400 homes with 14 single-story designs, 2 to 3 bedrooms, 2 to 3 baths, and approximately 1,300 to 2,200 square feet. That gives you a sense of how broad the housing mix can be within one larger master planned community.
HOA costs and expectations
In Ten Trails, the HOA is not a side detail. It is a core part of how the community operates. The development has an HOA portal, an on-site association manager, and a contact for questions about dues and covenants.
That means your monthly or quarterly ownership costs should include more than just mortgage principal, interest, taxes, and insurance. You will also want to understand HOA dues, community rules, and what those dues include.
What the HOA includes
One notable feature is internet service. Ten Trails says every home is wired for 1-gigabit internet, and the service is included in quarterly HOA dues. Community materials also state that free Wi-Fi is available in Civic Park and is planned for the upcoming retail village.
If you are comparing homes inside and outside a master planned community, this is the kind of detail that matters. It affects both your budget and your day-to-day living experience.
School planning in Ten Trails
If school planning is part of your decision, timelines matter. Enumclaw School District says it serves Black Diamond and is planning a new elementary school in the Ten Trails neighborhood, with a target opening in fall 2027.
District updates in 2026 say the school is intended to serve Ten Trails and surrounding areas as the district plans for long-term growth. If this is important to your move, make sure you verify the latest district information during your home search.
Lawson Hills and future growth
Lawson Hills is Black Diamond’s other major master planned development. The city’s Master Development Review Team identifies it alongside Ten Trails, and city public notices still show Lawson Hills plat and amendment activity.
The original Lawson Hills FEIS described a 371-acre mixed-use proposal with up to 1,250 residential units, 390,000 square feet of commercial, office, and retail space, a 10-acre elementary school site, and about 138 acres of open space. While that gives helpful context, this is still best understood as a long-term development area shaped by approvals and phasing over time.
What buyers should ask before purchasing
In a master planned community, the best questions often go beyond the house itself. You are also evaluating the phase of development, the amenities, and the structure of ownership.
Before you move forward, consider asking:
- Which amenities are complete today?
- Which amenities are planned for a future phase?
- What are the current HOA dues?
- What services are included in those dues?
- Are there neighborhood rules that affect parking, exterior changes, or property use?
- What builders and floor plans are currently available?
- What is the latest timeline for future retail or school development?
These questions can help you compare a polished model-home impression with the practical realities of everyday ownership.
What sellers should understand
If you own in or near one of Black Diamond’s master planned communities, your home is likely being compared against both resale listings and brand-new construction. That changes how pricing, presentation, and marketing should be handled.
Buyers may be weighing your home against new homes with builder incentives, newer finishes, or access to future amenities still being marketed by the developer. On the other hand, a resale home may offer advantages such as established landscaping, completed improvements, or a more immediate move-in timeline.
A strong selling strategy in this setting starts with clear positioning. You want buyers to understand what your home offers today, how it fits within the neighborhood, and how it compares to current builder inventory.
Is Black Diamond a fit for you?
Black Diamond can appeal to buyers who want a planned-community environment, newer construction options, and access to trails and open space at the southeast edge of King County. The city describes itself as a rural foothills community, and that identity helps frame the area’s balance of growth and natural setting.
At the same time, a master planned community asks you to think a little differently. You are not only buying what exists today. You are also buying into a neighborhood with future phases, evolving amenities, and ongoing city-reviewed development.
That is not a bad thing. It just means a smart purchase here starts with clear expectations and good local guidance.
If you are considering a move in Black Diamond or getting ready to sell, working with an advisor who understands both resale dynamics and new-construction competition can make the process much clearer. For steady guidance and local insight in South King County, connect with Joe Perkins.
FAQs
What is a master planned community in Black Diamond?
- In Black Diamond, a master planned community is a large development area that is reviewed and managed through city planning processes over time, with phased housing, amenities, infrastructure, and future community features.
What should buyers know about Ten Trails in Black Diamond?
- Buyers should know that Ten Trails includes a mix of home types, parks, trails, HOA-managed features, and future planned elements such as retail and a school site, so it is important to verify what is complete in the phase you are considering.
What types of homes are available in Ten Trails?
- Current community materials show attached townhomes, detached single-family homes, duplex-style homes, rental options, and 55-plus active-adult homes.
What does the Ten Trails HOA include?
- Community materials say Ten Trails includes 1-gigabit internet service in the quarterly HOA dues, and the community also has an on-site association manager for dues and covenant questions.
Is Lawson Hills part of Black Diamond’s future growth?
- Yes. Lawson Hills is one of the city’s major master planned developments, and city materials and public notices show that planning activity is still part of Black Diamond’s long-term growth picture.
Are schools changing in the Ten Trails area?
- Yes. Enumclaw School District says it is planning a new elementary school in the Ten Trails neighborhood, with a target opening in fall 2027.
