Baltimore County still publishes a legacy accessory-apartment framework while Maryland HB 1466 requires local ADU alignment by October 1, 2026. Compare the current permit path, size caps, owner-occupancy, utilities and what may change.
Compare Maryland ADU builders, modular providers and prefab kit options. See service scope, company-published pricing, Maryland licensing details and the questions to ask before signing a contract.
Planning an ADU on private well or septic in Maryland? Use our county-aware readiness checker and understand capacity, reserve-area, perc-test and Health Department review issues before paying for plans.
Maryland’s 75% ADU size rule is not measured the same way everywhere. Compare statewide guidance with Howard County’s exterior-footprint method and use our jurisdiction-aware planning calculator.
Prince George’s County is actively rewriting its ADU rules through CB-074-2026. Track the official timeline, what is proposed, what is not yet final, and what homeowners should verify before acting.
Montgomery County’s 2019 ADU framework remains active while ZTA 26-06 moves through the 2026 legislative process. Compare current size, parking, transit and approval rules with the proposed changes.
Howard County CB 3-2026 is now in effect. Compare ADU size, owner-occupancy, short-term rental, parking, stormwater and permit requirements before planning a project.
Maryland HB 1466 limits HOA restrictions on ADUs but does not eliminate HOA authority. Learn what counts as an unreasonable limitation, what HOAs may still regulate, and how voting and assessments work.
A primary-source guide to Maryland HB 1466: ADU size, local approval, setbacks, parking, HOA restrictions, utilities and the October 1, 2026 local-law deadline.
