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Annapolis, Maryland 21401
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Growth Tiers

In 2012, the Maryland General Assembly passed the Sustainable Growth and Agricultural Preservation Act of 2012 to address major developments served by on-site sewage disposal systems and their impact on the Chesapeake Bay and its tributaries.  The legislation requires all local jurisdictions in Maryland to develop and adopt a system of Growth Tiers for future residential development.  Four tiers were established to identify where major and minor residential subdivisions may be located in a jurisdiction and what type of sewerage system can serve them.
The Office of Planning and Zoning adopted Growth Tiers administratively on June 17, 2013.
To download the Growth Tiers Map in pdf format, click here.
The governing criteria for delineating Growth Tiers are established in the State law, as well as the related requirements for future development in each tier.  Criteria and development requirements are summarized in the table below.

 

Criteria

Development Requirements

Tier 1

 • areas served by public sewer systems

 • areas in locally designated growth area

 • major and minor subdivisions are permitted

 • all new subdivisions must connect to public sewer systems

Tier 2

 • areas that are planned to be served by  public sewer systems (per the County’s adopted Water and Sewer Master Plan)

 • areas in locally designated growth area

 • major subdivisions are permitted and must connect to public sewer systems

 • minor subdivisions are permitted and may connect to public sewer systems or utilize on-site septic systems

 • minor subdivisions using on-site septic systems are considered interim and must connect to public sewer when available

Tier 3

 • areas not planned for public sewer service

 • areas planned and zoned for large lot or rural development

 • major and minor subdivisions are permitted and must utilize on-site septic systems or private community systems

 • public sewer systems are not available

Tier 4

 • areas not planned for public sewer service

 • Rural Legacy and Priority Agricultural Preservation areas

 • areas subject to conservation easements or covenants

 • areas planned and zoned for land, agricultural, or resource protection or preservation

 • major subdivisions are not permitted

 • minor subdivisions are permitted and must utilize on-site septic systems

 • public sewer systems are not available

* Development requirements apply to new residential subdivisions and do not apply to commercial, industrial, institutional, or other non-residential development.
* A minor subdivision creates five or fewer residential lots.  A major subdivision creates six or more residential lots.
For additional information on the Growth Tiers legislation and implementation, see the Maryland Department of Planning website at www.mdp.state.md.us.

 

 


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