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History of the ESLO

ESLO Versions

ESLO - October 2006
(pdf/1.5 MB/24pp)

ESLO 2004
Effective 05-21-04 
(pdf/300kb/33pp)

ESLO 2003
Effective 05-01-03 
(pdf/442kb/30pp)

ESLO 2002
Effective 01-31-02 
(pdf/389kb/79pp)

ESLO 1991
Adopted in 1991 
(pdf/1.5mb/47pp)

Hillside District 
(pdf/371kb/10pp)


The Environmentally Sensitive Lands Ordinance ESLO-1 was a set of zoning regulations, located in Sections 6.1011 - 6.1091 of the Zoning Ordinance, adopted by the City Council in 1991 to guide development throughout 134 square miles of desert and mountain areas of Scottsdale. These areas (see the ESLO Maps) are located north and east of the Central Arizona Project Canal, in north Scottsdale.

ELSO Revisions:

In September 2006, the City Council approved amendments to Section 6.1083 & 6.109.

In December of 2001, the City Council revised the ordinance ESLO 2002 (pdf/389kb/79pp) - Map (pdf/289kb/1p). These revisions were part of a two-year process to thoroughly review the ordinance and make changes to improve the usability and effectiveness of the document. Effective January 31, 2002.

The Council asked staff to return in a year with an analysis showing what was working well and how the new ordinance could be fine-tuned to be more effective.
Approved April 1, 2003; Effective May 1, 2003.

Council adopted additional changes on the April 20, 2004, to become effective May 21, 2004.

  • Changes (pdf/300kb/25pp/04-20-04 )
    Exemption chart on page 4