Petersburg Borough, Alaska
Kupreanof is a city in Petersburg Borough, Alaska. Kupreanof adopts its own zoning, so inside its limits Kupreanof’s rules apply, not the county’s. 9 rules below are quoted from official sources and independently re-checked, most recently on November 1, 2026. Rules for unincorporated land are on the Petersburg Borough page.
Land inside Kupreanof city limits. Kupreanof city adopts and administers its own zoning under Title 8, Chapter 12 (Zoning) of its code.
“the official zoning map and all explanatory information on it is part of the kupreanof zoning ordinance.”
Land inside Kupreanof city limits. The code divides the city into a development district and a protection district.
“the city is divided into two categories: (1) a development district; and (2) a protection district.”
Land inside Kupreanof city limits where a dwelling unit is placed (development district).
land area per dwelling unit or non-residential building: >= 1.25 acres (does not apply to outbuildings)
“all lots must provide 1.25 acres per non-residential building or dwelling unit. the density requirement does not apply to outbuildings.”
“all lots must have a minimum size of 2 1/2 acres.”
Buildings on all lots inside Kupreanof city, including the development district.
building setback from all lot lines: >= 30 feet
“all buildings must be set back at least thirty (30) feet from all lot lines of the property.”
Buildings in Kupreanof city, including the development district.
maximum building height: <= 30 feet (measured from the mean building grade line)
“no building shall exceed a height of thirty (30) feet from the mean building grade line.”
Camping in the protection district of Kupreanof city only. The development-district camping rule was not located.
“(3) related uses such as hiking, picnicking, skiing, camping, fishing, and berry picking.”
Mobile homes in the development district of Kupreanof city. The code uses the term 'mobile homes'.
“mobile homes must be anchored to a permanent foundation and sided with non-reflective materials and finishes.”
Land divisions inside Kupreanof city limits, under the platting board (planning commission) and Title 8 Chapter 13 (Land Division).
minimum parcel size created by subdivision: >= 2.5 acres
“each parcel created shall be 2.5 acres or larger.”
We looked and could not find an official answer yet. Silence is not permission; ask Kupreanof or Petersburg Borough directly.
Each answer was extracted from an official source and independently re-checked against that source by a second reviewer. That is an evidence check, not legal advice. Rules change; confirm with the authority before you buy or build.
Unanswered questions are usually a sign that Kupreanof publishes no rule on the point, not that none exists. Petersburg Borough’s page lists the county offices to call.
Off-grid gear
Going off-grid in Kupreanof means bringing your own water and power. The kit we’d start with:
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