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SetbackIQ

Sheds and garages in Montgomery County, MD

Every shed needs a permit in Montgomery County, whatever its size. Accessory buildings stay behind the house and meet the zone's accessory setbacks.

A person last checked these rules on October 20, 2026. This is guidance only, so confirm with Montgomery County before you build.

The details

  • R-60 and R-90 accessory setbacks and heights are in SetbackIQ's shed and garage answers.High confidence

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SetbackIQ reads the zoning, flood zone, historic district, and environmental maps for your lot. Then it applies these rules.

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Common questions

Where can a shed or garage go in Montgomery County?
Every shed needs a permit in Montgomery County, whatever its size. Accessory buildings stay behind the house and meet the zone's accessory setbacks.

Sources

  1. Montgomery County DPS, R-60 Zone Development Standards (Sec. 4.4.9, guidance). Checked 2026-10-19
    Accessory Buildings: Rear yard only... 5 ft. Side setback... 5 ft. Rear setback, if not otherwise addressed... 20 ft. maximum height... footprint must not exceed 50% of the footprint of the main building or 600 sq/ft whichever is greater.
  2. Montgomery County DPS, R-90 Zone Development Standards (Sec. 4.4.8, guidance). Checked 2026-10-20
    Maximum Coverage 30% including accessory buildings... Minimum Side Setback Total 25 ft.; one side 8 ft... Minimum Rear Setback 25 ft... Accessory Buildings Rear yard only... 20 ft. maximum height... 60 ft. Front setback... 5 ft. Side Setback... 5 ft. Rear S…

Disclaimer: This is general information, not legal or professional advice for any one property. Codes change. SetbackIQ is not a zoning determination, a permit, or a survey, and it does not replace an architect, engineer, or lawyer. Confirm with your building and zoning offices before you build, buy, or sign a contract.