Multi-Family Residential Design Guidelines[PDF]
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MULTI-FAMILY RESIDENTIAL DESIGN GUIDELINES Adopted by the Marin County Board of Supervisors on December 10, 2013 ACKNOWLEDGMENTS BOARD OF SUPERVISORS COUNTY STAFF Susan Adams, District 1 Brian C. Crawford Katie Rice, District 2 Director of Community Development Agency Kathrin Sears, District 3 Thomas Lai Steve Kinsey, District 4 Assistant Director of Community Development Agency Judy Arnold, District 5 Jeremy Tejirian Planning Manager of Planning Division PLANNING COMMISSION Stacey Laumann Katherine Crecelius, At-Large Planner of Planning Division Ericka Erickson, At-Large Don Dickenson, District 1 Margot Biehle, District 2 John Eller, District 3 Michael Dyett, Principal-In-Charge Wade Holland, District 4 Matt Taecker, Principal Peter Theran, District 5 Jeannie Eisberg, Senior Associate WORKING GROUP Supported by a grant from the Metropolitan Transportation Bob Hayes Commission Smart Growth Technical Assistance Program Bruce Burman John Eller Steven Aiello Curry Eckelhoff Rich Gumbiner Allan Bortel Marge Macris Kathleen Harris Robert Pendoley Scott Gerber Steven Lucas Sim Van der Ryn Cover image adapted from: The American Transect, http://www.transect.org/rural_img.htm i CONTENTS INTRODUCTION ...............................................................................................................................................................1-1 Purpose ...............................................................................................................................................................1-1 Fundamental Design Principles .......................................................................................................................1-1 How to Use the Guidelines ...............................................................................................................................1-2 Organization of Document ................................................................................................................................1-3 2 GENERAL GUIDELINES .............................................................................................................................................2-1 2.1 Community Context ............................................................................................................................................2-1 2.2 Proportion, Scale, and Arrangement ..............................................................................................................2-3 2.3 Building and Street Relationships ...................................................................................................................2-4 Building Fronts and Entrances ........................................................................................................................2-4 2.4 Building Mass .....................................................................................................................................................2-7 2.5 Building Façades ..............................................................................................................................................2-9 General Composition and Rooflines ...............................................................................................................2-9 Windows ...........................................................................................................................................................2-10 Materials and Detailing ..................................................................................................................................2-11 Color ...................................................................................................................................................................2-12 2.6 Outdoor Living Space ......................................................................................................................................2-12 Shared, Private, and Publicly-Accessible Open Space ...........................................................................2-12 2.7 Landscaping, Storm Water, and Green Building ........................................................................................2-14 2.8 Exterior Lighting ...............................................................................................................................................2-18 2.9 Equipment and Service Areas .......................................................................................................................2-19 3 PLACE-BASED GUIDELINES ....................................................................................................................................3-1 3.1 Residential Neighborhoods ..............................................................................................................................3-1 Context Sensitive Design ..................................................................................................................................3-1 Building Scale and Character ..........................................................................................................................3-2 3.2 Mixed-Use Centers ............................................................................................................................................3-4 Context-Sensitive design ..................................................................................................................................3-4 Frontage and Massing ......................................................................................................................................3-5 Commercial-Residential Compatibility ..........................................................................................................3-7 Horizontal Mixed Use ........................................................................................................................................3-7 Multi-Family Residential Design Guidelines ii 3.3 Rural Towns .......................................................................................................................................................3-8 Context-Sensitive Design .................................................................................................................................3-8 4 PARKING, STREETS, AND PATHS ...........................................................................................................................4-1 4.1 Parking and Vehicle Access ............................................................................................................................4-1 4.2 County-Maintained Streets ..............................................................................................................................4-4 4.3 Privately-Maintained Streets ...........................................................................................................................4-5 4.4 Trails, Rear Access and Parking Area Lanes ................................................................................................4-8 5 DEVELOPMENT PATTERNS .....................................................................................................................................5-1 1 INTRODUCTION PURPOSE The Multi-family Residential Design Guidelines provide guidance for achieving high-quality residential design in unincorporated areas of Marin County. The Guidelines are intended to assist project appli- cants during the project design phase and County staff and decision makers in the review and approval process. While conformance with the Marin County Code is required for any project approval, these Guidelines offer additional direction about the County’s expectations and provide clear evaluation criteria that can be used in decision-making. The Guidelines aim to be prescriptive enough to create a framework for design and to carry out the vision in the Countywide Plan and applicable Community Plans, but flexible enough to allow for creativity and innovation in design. Development applications should achieve general consistency with the guidelines in order to be approved. Competing objectives in the Guidelines will need to be balanced in a manner that is true to the fundamental de- sign principles expressed below. FUNDAMENTAL DESIGN PRINCIPLES Marin County goals and policies set the foundation for guidelines in this document. The most relevant goals and policies are synthesized into the following “design principles.” • Sustainability. Encourage development patterns and building methods that make efficient use of land, energy and other resourc- es. Build things that last and adapt to new needs over time, includ- ing changing environmental conditions such as sea level rise • Health and Livability. Promote public health by making walking and biking attractive options and by encouraging community and other outdoor living areas that are appropriate to the place and the people who will use them. Multi-Family Residential Design Guidelines 1-4 • Physical Character. In each community, respect and enhance es- sential design characteristics that make it attractive and livable. Protect Marin’s scenic qualities, especially views of ridgelines, hill- sides, water, and trees. • Housing and Other Human Needs. Provide a mix of housing types to meet the needs of Marin’s workforce and residents, par- ticularly families, seniors, low-wage earners, and disabled people. • Compact Development. Use Marin’s land efficiently by having new construction take a