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Energy codes, green building and upkeep in Montgomery County, MD

New houses and additions follow the county's adopted building and energy codes. Upkeep of existing homes is enforced under County Code Chapter 26, Housing and Building Maintenance Standards.

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

The details

  • Replacing heating equipment needs a permit in Montgomery County.High confidence
  • Chapter 26 appears in the County Code table of contents.Medium 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

Which energy, green-building and property-maintenance rules apply to a house in Montgomery County?
New houses and additions follow the county's adopted building and energy codes. Upkeep of existing homes is enforced under County Code Chapter 26, Housing and Building Maintenance Standards.

Sources

  1. Montgomery County DPS, Permits Required / No Permits Required (2024). Checked 2026-10-21
    [Likely requires a permit:] Accessory Structure; Deck; Driveway (apron only); Electrical Work; Exterior Work on Historic Property; Fence; Garage; Hot Tub; HVAC Heating (replacing); Land Disturbance (greater than 5,000 square feet or 100 cubic yards or more …
  2. Montgomery County Code Chapter 55, Tree Canopy Law, § 55-4 Applicability; Chapter 19 Article III floodplain district permits. Checked 2026-10-21
    [§ 55-4] Except as otherwise provided in Section 55-5, this Chapter applies to any person required by law to obtain a sediment control permit. [§ 55-5] This Chapter does not apply to: (a) any activity that is subject to Article II of Chapter 22A [Forest Con…

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.