NEW! View accessory dwelling unit (ADU) ordinances for the MARC region.
The seven sustainability principles are simple, broad concepts that describe characteristics of a sustainable community. Each principle corresponds to several sustainability concepts, which represent more specific means of achieving the principles. One concept can correspond to multiple principles.
The design of our communities impacts how we access and distribute food and what we eat. Better integrating a range of different food production and distribution options into our communities can increase our public health, strengthen our local economy and make better use of our landscapes.
Age-in-place communities allow people to live where they want despite changes in their housing needs. Diverse housing options allow people to remain in their neighborhoods, stay engaged in familiar environments and established relationships, and contribute to the broader community.
Improve the social connections by being closer to diverse populations and activities.
Improve the quality-of-life for non-driving populations with housing options near services.
Concentrating more small-scale and diverse uses in compact patterns allows people to walk to shopping, school, jobs and entertainment. Arranging a greater mix of uses around a well-connected, pedestrian-scaled public realm builds valuable and enduring places, and it improves the overall economic and environmental performance of development.
Well-designed streets provide a setting for commerce, a place for social interaction and offer a variety of transportation options. Streets and rights-of-way are one of our most valuable assets and one of the largest single landholdings in most communities. Designing these spaces to meet as many needs as possible and to better support abutting property will maximize the value to our communities.
Connected street networks improve our access to daily needs and establish more valuable and efficient development patterns. Greater connections provide more direct routes, allow options for different routes, and make our communities more adaptable to long-range change.
Context appropriate streets fit the physical setting and better support our distinct places. Varying street designs, even on a block-by-block basis, to account for different environmental conditions, different urban design goals, and different development patterns improves transportation choices.
A greater range of housing types makes our neighborhoods more stable and resilient to outside influences. Increasing the variety of housing options can better meet the changing housing demands of our population and supplies the broad range of housing needed for more complete communities.
More efficient building and site designs can improve environmental performance, increase our health, and reduce the lifecycle costs of property investments. Building orientation and siting, landscape and site design, material selection, operation and maintenance practices, and the adaptability of our buildings and sites to future reuse all impact how much resources and energy we consume.
Using natural systems to serve development and designing development to incorporate natural systems can reduce costs and increase environmental performance of our communities. Green infrastructure preserves valuable ecological functions of our landscapes and emphasizes distinct characteristics of our communities.
Preserving significant structures connects a community to its past. Historic preservation laws and practices enable a community to walk amidst its past while often continuing to use the structures for current needs, such as residences and offices.
Infill development and rehabilitation of existing buildings helps find space for new homes within our established communities. Designing infill developments in ways that work well with their surroundings and retool property for productive use and modern needs keeps our neighborhoods, corridors and activity centers strong.
Trail systems connect our communities and natural areas, enhance our transportation networks and promote recreational systems. Integrating trail systems into our development patterns makes us more active and more engaged in our community.
A wide variety of housing types within the same neighborhood strengthens community diversity and increases the number of amenities available to residents. Integrating a range of similar scale of lots, building footprints, heights and frontages allows different housing types to mix compatibly despite wide ranges of density, and establishes the distinct characteristics of our neighborhoods.
Provide housing with affordable transportation options.
Improve infrastructure return-on-investment with more efficient development patterns and more valuable and resilient neighborhoods.
Parks, open spaces and natural areas are defining features of our communities. Arranging our built environment in ways that emphasize valuable natural landscapes as a focal point of development enriches our communities and builds distinct, desirable places.
Optimal parking solutions respond to the context and development patterns to improve access for people. Too much parking can be as big of a detriment to quality development as too little. When we mandate parking requirements, but fail to balance this with similar mandates that ensure access for people on foot, bicycles or transit, we limit choices.
A public realm designed for people establishes our most memorable and enduring community characteristics. The design of our rights-of-way and civic spaces, and the relationships of buildings to these spaces, shapes how we experience and perceive our communities.
Increase the vibrancy of our public realm by filling it with more active people.
Leverage small public realm investments to improve neighborhoods, corridors and activity centers.
Improve options for different transportation choices and reduce transportation costs.
Reduce per capita vehicle miles traveled and improve air quality.
Improve public health through more walking and biking.
Strengthen local business opportunities with diverse and distinct destinations.
Support the community identity and provide inviting gathering places.
Development patterns and policies of our cities impact both our sources of energy and our use of energy. Retooling our cities for renewable energy – from the regional scale to the site scale – helps reduce our energy demand, increase our energy supply and efficiency, and make our communities more resilient, affordable and healthy.
Strategic investments and better land use transitions can restore value to our corridors. Car-oriented corridors reach a point of diminishing returns as each additional business competes for the visibility, access, and space needed to capture traffic and accommodate cars on high-volume streets. Coordinating public and private investments to create places for people, and connecting these places to supporting land uses can repair our declining corridors.
Build value through incremental investments.
Limit vehicle access to key points along a block, use shared internal circulation systems, and use side street and alley access.
A strong, well-connected and accessible market makes retail more successful. Improving the proximity and relationship between neighborhoods and the amount and types of commercial development they demand makes our corridors and activity centers vital and worthy of long-lasting investments.
Strong downtowns attract investment, create a community identity, and provide a place for people to gather and walk. A vibrant and connected downtown increases the resiliency of our communities and adds diversity to our economy.
Connecting our most common trip origins and destinations along strategic corridors will better support local and regional transit lines. More housing choices, increased employment options, and direct connections to more walkable places prepare our corridors for better transit service.
Maintaining our well- established trees and planting the right tree in the right place builds long-term value in our communities. The urban forest does more than make our streets, parks and neighborhoods pretty; it provides valuable ecosystem services that reduce energy use, clean our air and water, and keep our communities vibrant, comfortable and healthy.
Improve air and water quality.