Rezoing Request & Development Plan
A clear framework. A specific purpose. A lasting commitment.
The Proposal
Mycelia proposes the adaptive reuse of the historic Greystone Estate, located at 222 Greystone Road in the Upper Bear Creek area of Evergreen, Colorado, as a Residential Treatment Center providing structured, extended-stay residential behavioral health treatment within the Property’s existing buildings and developed areas.
Committed to Responsible Stewardship
Guided by integrity.
Safety, compliance, and long-term stewardship behind every decision.
Sustainable by design.
Water use, land stewardship, and resource protection support a regenerative future.
Low impact operations
Extended-stay model with minimal traffic and limited site disturbance.
Supporting healing.
A peaceful, well-planned environment for long-term healing and community.
Rooted in purpose.
Adaptive reuse of existing improvements with care and intention.
At A Glance
Up To 30 Adult Residents
A small-scale residential setting, not an institutional campus.
Existing Buildings
Adaptive reuse of Greystone’s developed areas—not new development.
Extended-Stay Treatment
Structured residential care with minimum length-of-stay commitments.
The Plan
Rezoning Request
The Jefferson County portion of Greystone is currently zoned Agricultural-T wo (A-2) and Mountain Residential-One (MR-1), with the Manor and principal developed campus located within the A-2 Zone District. Mycelia is requesting rezoning to Planned Development (PD) to establish a property-specific zoning framework for the proposed Residential Treatment Center and its integrated accessory uses.
Importantly, a Residential Treatment Center is already contemplated within the existing A-2 zoning. Jefferson County classifies a Residential Treatment Center as a Group Living Facility, which may be approved in the A-2 Zone District through the Special Use process. Accordingly, the PD request is not necessary to introduce residential treatment as a potential use of the Property.
Rather, PD zoning is requested because Mycelia proposes to integrate a state-regulated Natural Medicine Healing Center as an accessory and subordinate component of the Residential Treatment Center. Jefferson County’s December 31, 2024 Director Determination determined that a Healing Center is functionally equivalent to a medical or dental office for zoning purposes. The PD provides a mechanism to integrate the Residential Treatment Center, acces
Community
Consideration
The Official Development Plan (ODP) establishes a set of provisions in consideration of the surrounding community. These include enforceable limits addressing resident capacity, minimum length of stay, staffing, accessory uses, parking, visitation, noise, outdoor activity, and other characteristics relevant to the scale and compatibility of the use.
These provisions create a narrowly tailored regulatory framework for Mycelia at Greystone: allowing the integrated treatment model proposed by the applicant while providing the County and surrounding property owners with clear, enforceable limits on the use and its future operational intensity.
The Use
The use of Mycelia at Greystone Estate is as a structured, 24-hour residential treatment center with clear limits and strong accountability. Operations are designed around a limited, extended-stay residential population within a controlled and professionally managed environment.
Resident Population and Program
The ODP establishes a maximum capacity of 30 residents and requires a minimum 30-day stay. Residents will live on the Property throughout their enrollment and participate in structured treatment, therapeutic programming, meals, recreation, daily practices, and community within the Greystone campus. Mycelia is intended for individuals who can safely participate in this residential level of care. Detoxification services will not be provided on the Property, and individuals requiring acute medical care, detoxification, or another level of care will be referred or transferred to an appropriate off-site provider.
24-Hour Supervision
Professional staff will be present 24 hours per day, seven days per week, with staffing varying by resident census, clinical needs, time of day, and scheduled programming. The interdisciplinary team will include clinical and behavioral-health professionals, resident-support and medical personnel, administrative and operational staff, culinary and therapeutic-programming staff, and property-management personnel.
Community Protections
Outdoor spaces will primarily support low-impact residential and therapeutic uses such as walking, meditation, yoga, exercise, nature immersion, and small-group programming. The ODP requires compliance with applicable residential noise limits and prohibits outdoor amplified sound. Mycelia will also operate as a non-smoking campus, consistent with both its therapeutic mission and its commitment to wildfire prevention and responsible stewardship of the Estate.
Site, Access & Infrastructure
We are committed to integrating into the Evergreen community as peacefully as possible. Learn more about how we are working to address the primary concerns of the community.
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Water-rights counsel evaluated the proposed Mycelia program, including the 30-resident maximum capacity and anticipated staffing, using conservative operating assumptions. The analysis concludes that anticipated in-building water demand is within the 2.0 acre-feet per year authorized by the existing Decree and that the existing water rights, water-supply structures, and augmentation plan are adequate to serve the proposed project without modification to the existing Decree or other legal authorizations. Greystone Well No. 1 will be metered to ensure actual water use remains within authorized pumping limits.
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The ODP requires 25 parking spaces for staff, support personnel, and volunteers and three guest parking spaces. Existing garages, paved areas, and hardscape within the Primary Campus will be utilized to the greatest extent practicable.
The Site Plan also identifies an approximately 10,000-square-foot area within the Primary Campus capable of accommodating approximately 25 vehicles if additional parking improvements are necessary. Final parking layout, dimensions, grading, drainage, and associated improvements will be established through subsequent grading and site-development review.
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The Transportation Analysis prepared by SM ROCHA evaluates traffic associated with Mycelia based upon the proposed 30-resident maximum capacity and anticipated staffing and operating characteristics. Because residents remain on-site for extended stays, the Healing Center and medical services will not serve the general public, and Mycelia will provide transportation for arriving and departing residents, the project’s traffic characteristics differ from uses involving regular customer or patient turnover.
Using ITE Land Use Code 254 (Assisted Living) as the best available comparable use and applying average trip-generation rates as a conservative methodology, the analysis estimates approximately 124 vehicle trips per day, including approximately 6 trips during the morning peak hour and 7 trips during the afternoon peak hour.
For context, the existing six residential units on the Estate are estimated to generate approximately 55 daily trips, while residential development at the maximum densities permitted by the existing zoning across the approximately 54-acre Estate is estimated at approximately 300 daily trips. The proposed PD therefore represents an estimated increase of approximately 70 daily trips over existing conditions, but approximately 176 fewer daily trips than the maximum residential development permitted by existing zoning. Peak-hour traffic is similarly substantially below the maximum existing-zoning scenario.
Fire Mitigation
Greystone has been actively managed for wildfire risk for many years, and substantial mitigation has already occurred throughout the developed campus. Greystone also has significant existing firefighting water resources.
Existing Firefighting Water Resources
20,000 gallon buried cistern connected to an on-site fire hydrant
10,000 gallon irrigation tank
48,000 gallon swimming pool
Pond as a potential firefighting water souce
Wildfire mitigation at Greystone will be an ongoing property-management responsibility, not a one-time improvement. Mycelia will continue the property’s history of active forest management while implementing the recommendations of the Wildfire Hazard Mitigation Plan and maintaining required defensible space, vegetation management, emergency access, structural protections, and firefighting infrastructure. This approach is consistent with the County Code’s emphasis on both initial mitigation and continued maintenance of buildings, vegetation, landscaping, and defensible space.
Through the combination of substantial mitigation already completed, significant on-site firefighting water resources, a professional mitigation plan, continued forest management, and compliance with the County’s newly adopted Class 2 Intermix standards, the Mycelia proposal provides a comprehensive framework for reducing wildfire risk and supporting the long-term safety and resiliency of the Greystone Estate.
Wildfire Hazard Mitigation Plan
Recommended measures include:
Maintain and enhance defensible space around all structures.
Continue thinning, pruning, and ladder-fuel removal where needed.
Maintain mitigation along the driveway and emergency-access corridor.
Manage slash and woody debris to reduce surface fuels.
Develop and implement a broader forest-management framework for long-term forest health and resilience.
Ongoing maintenance: monitor insects and disease, manage vegetation, remove combustible debris, maintain roofs and gutters, and protect access and water resources.
Plan Development Exhibit
