Per Montgomery County: Under requirements of Montgomery County law, the Voluntary Rent Guideline (VRG) is updated annually to represent the prior year increase in the rental component of the Consumer Price Index for the Washington Metropolitan Area. Based on that, the VRG for Montgomery County has been set at 5.8 percent. That guideline went into effect on Feb. 24. The VRG for 2022 was 0.4 percent. Per the County law, a notice of rent increase must be in writing and delivered to a tenant at least 90 days prior to the effective date of the rent increase. The limit on rent increase notices applies to all County-licensed residential rentals, including rental units in multifamily buildings, houses, townhouses, individual condominium units and accessory dwelling units.