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How much notice does a landlord have to give before raising the rent in Montgomery County?

Short answer

At a glance: 90 days

90-day written notice before any rent increase (regulated and exempt units)

Notice: At least 90 days before the rent increase takes effect

Give tenants written notice at least 90 days before any rent increase, by US mail or in person with a signed receipt.

"For both regulated and exempt units, landlords must provide a written 90-day notice before increasing rent. This notice must be delivered by US mail or in person with a signed receipt."
montgomerycountymd.gov

Source: montgomerycountymd.gov · Last verified 2026-10-20 · Confidence: medium · All 2 Montgomery County, MD rules on this topic

Montgomery County, MD rules on this topic

90-day written notice before any rent increase (regulated and exempt units) Verified

Deadline: At least 90 days before the rent increase takes effect

Give tenants written notice at least 90 days before any rent increase, by US mail or in person with a signed receipt.

Applies to: any number of units · Layer: Montgomery County, MD · Topic: Rent increase notice

Who it covers: Applies to both rent-stabilized and exempt units. Delivery by US mail or in person with signed receipt.

"For both regulated and exempt units, landlords must provide a written 90-day notice before increasing rent. This notice must be delivered by US mail or in person with a signed receipt."
montgomerycountymd.gov

Notes: County Code §29-54 (amlegal returned 403; not snapshotted). Overrides/adds to MD state law (no state rent-increase notice found).

Last verified 2026-10-20 · Confidence: medium · Status: verified · Report a correction

Rent stabilization cap: CPI-U + 3% or 6% (lower); 5.2% for July 1, 2026-June 30, 2027; once per 12 months Verified

Deadline: Every year by July 1

For rent-stabilized units, DHCA sets the yearly maximum increase (CPI-U + 3% or 6%, whichever is lower), effective July 1-June 30; the current maximum is 5.2% through June 30, 2027, and rent may rise only once every 12 months.

Applies to: any number of units · Layer: Montgomery County, MD · Topic: Rent increase notice

Who it covers: Rent-stabilized units only; which units are covered (age/exemption criteria) was not captured in a snapshot. Banked unused increases allowed, total capped at 10%.

"These rates are effective from July 1 through June 30 of the following year."
montgomerycountymd.gov
"Maximum allowable rent increase is 5.2% These rates remain in effect until June 30, 2027."
montgomerycountymd.gov
"Rent for regulated units may only be increased once every 12 months."
montgomerycountymd.gov

Notes: County Code §§29-57, 29-58; COMCOR 29.58.01. Calendar event: new allowance takes effect each July 1.

Last verified 2026-10-20 · Confidence: medium · Status: verified · Report a correction

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