North Beach ADU Rules 2026: 800-Sq-Ft Cap, Parking & HB 1466 Transition

North Beach has its own municipal zoning rules for accessory apartments, separate from Calvert County. The Town’s currently published framework still uses a 5,000-square-foot minimum lot, one accessory apartment per single-family detached lot, at least one off-street parking space, an 800-square-foot cap when the unit is in an accessory structure, and owner occupancy. At the same time, North Beach is actively reviewing those rules against Maryland’s October 1, 2026 HB 1466 deadline.

This guide separates currently published Town rules from 2026 transition activity. A workshop, agenda item, Planning Commission discussion, or draft is not treated as enacted law. Maryland ADU Guide is an independent research publication, not a zoning office or legal adviser.

1. Quick answer: are accessory apartments allowed in North Beach?

2. North Beach vs. Calvert County: the same project can involve two governments

North Beach should be treated as a municipal carve-out, not simply as “Calvert County ADU rules.” Calvert County’s own accessory-apartment permitting page specifically tells applicants that if the property is inside the town limits of North Beach or Chesapeake Beach, a municipal “Beach Application Approval” is required with the County building-permit package.

This split is exactly why a homeowner should identify the zoning jurisdiction before relying on any county-wide ADU summary. The Town can control land-use approval even when the County still controls the construction permit.

3. What North Beach’s currently published accessory-apartment rules say

North Beach’s current materials use the older term “accessory apartment” rather than the newer statewide HB 1466 terminology. Ordinance 22-01 and the Town zoning materials publish the following core conditions for an accessory apartment associated with a single-family detached residence.

These are the currently published Town standards. They are useful for understanding the pre-alignment baseline, but they should not be assumed to be the final rules that will govern after North Beach completes its 2026 HB 1466 work.

4. North Beach is actively working on its HB 1466 update

The strongest evidence of North Beach’s transition comes directly from the Town Council record. At the February 5, 2026 work session, Town staff briefed the Council on HB 1466/SB 891. The approved minutes state that the Maryland law became effective October 1, 2025, that local governments must adopt an updated ordinance by October 1, 2026, and that existing regulations remain in effect until adoption.

The minutes also say Council members asked questions about what the state law requires and that responses would be brought back in the coming months. No final ADU ordinance was adopted at that February work session.

The official 2026 Agenda Center later lists a June 25 Planning Commission meeting, and that meeting’s agenda included an “Accessory Dwelling Unit Ordinance Change” business item. That is a clear transition signal, but an agenda item is not final enactment.

5. The 800-sq-ft detached cap vs. Maryland’s 75% ADU definition

North Beach’s current rule does not say every accessory apartment is capped at 800 sq ft. The fixed 800-sq-ft limit is written specifically for an accessory apartment located in an accessory structure.

Maryland Land Use §4-501 now defines an ADU as a secondary dwelling on the same lot as a primary single-family detached dwelling that is no greater than 75% of the size of the primary dwelling. The Maryland Department of Planning further states in its HB 1466 FAQ that local jurisdictions required to authorize ADUs consistent with the state definition may not limit ADU size below the 75% limit.

Maryland law itself does not define exactly how the primary dwelling’s size must be measured. MDP recommends finished living area above grade unless a lawful local implementation method provides otherwise. For the statewide calculation issues, use the Maryland 75% ADU Size Calculator & Measurement Guide.

6. North Beach’s one-space rule creates an HB 1466 parking-study question

The current North Beach accessory-apartment standard requires at least one off-street parking space for the apartment. That rule also appears in historical Planning Commission records, where the Commission discussed how a particular accessory apartment had to satisfy the off-street parking requirement or maintain an agreement for parking elsewhere.

HB 1466 changes the procedure for any local government that wants to impose additional off-street parking specifically on ADUs. Maryland Land Use §4-504(e) requires the local legislative body to complete a parking study before adopting that requirement, consider the statutory factors, and include a parking-waiver process.

The Maryland Department of Planning says a parking study is required only when the local ADU law imposes an off-street parking requirement. If the final North Beach ordinance removes the additional ADU parking requirement, the HB 1466 parking-study trigger would not apply.

For the statewide procedural rule and other local examples, see Maryland ADU Parking Rules & Parking Study Tracker.

7. Owner occupancy remains in the currently published North Beach rule

North Beach’s current accessory-apartment standard says an owner of the lot occupies at least one of the dwelling units, with an exception for bona fide temporary absences as determined by the Planning Commission.

HB 1466 does not itself create a statewide ban on owner-occupancy requirements. For that reason, this guide should not assume the Town must remove owner occupancy. The correct question is whether North Beach retains, modifies or removes it in the final 2026 ordinance.

The current accessory-apartment provision also does not by itself answer whether a North Beach ADU can be used as a short-term/vacation rental. North Beach has separate vacation-rental rules and licensing standards. Homeowners should obtain a current Town interpretation before treating an ADU as eligible for short-term rental use.

8. Water and sewer capacity can be a hidden North Beach feasibility issue

North Beach is a compact, largely developed waterfront municipality. The Town’s comprehensive-plan review notes that its fixed borders and infill pattern limit conventional growth opportunities and that negotiated sewer-tap caps can constrain future residential growth. The same Town planning material specifically notes that the accessory-apartment ordinance can accommodate some additional housing, but that tap limitations may need to be addressed.

This is important because an ADU can satisfy zoning dimensions and still run into a utility-capacity or connection issue. Maryland’s HB 1466 framework preserves public-health, safety and facility-capacity requirements, and MDP recommends that municipalities that do not determine all facility capacities coordinate with the county.

9. Critical Area, floodplain and stormwater can matter on a waterfront lot

North Beach’s waterfront location creates property-specific environmental layers that should be checked independently from the basic ADU zoning rule. Calvert County’s accessory-apartment permitting guidance says an accessory apartment within the Chesapeake Bay Critical Area requires a Critical Area Worksheet.

North Beach’s Certificate of Use and Occupancy / Change in Use form also includes a flood-zone check and tracks site/grading and County final inspections. This does not mean every North Beach ADU is in a floodplain or needs the same environmental approval. It means the parcel’s mapped conditions should be checked before design.

For a detached unit, do not treat the zoning envelope as the entire buildable envelope. Critical Area requirements, flood elevation, drainage, easements and utility routing can reduce the practical area available for an ADU.

10. North Beach ADU permit workflow: Town zoning first, County construction permits after

For homeowners comparing municipal and county responsibilities, the neighboring Chesapeake Beach ADU Rules guide is useful because both towns use municipal zoning while Calvert County remains involved in the physical permitting layer.

11. What a North Beach homeowner should do before paying for plans

1. Verify that the parcel is actually inside North Beach. Do not apply unincorporated Calvert County zoning or Chesapeake Beach rules merely because the towns are adjacent.
2. Ask the Town which ADU/accessory-apartment ordinance is currently enforceable. The 2026 transition makes the application date important.
3. Confirm the primary dwelling is a qualifying single-family detached dwelling. That is central to both the current Town accessory-apartment rule and Maryland’s statutory ADU definition.
4. Do not design a detached unit around the 800-sq-ft legacy cap without rechecking the final 2026 rule. The state 75% framework creates a live transition question.
5. If the Town retains extra ADU parking, ask for the parking study and waiver path. Do not assume the existing one-space rule will be the final aligned rule.
6. Ask about water/sewer capacity and tap requirements before final design. North Beach’s own planning record identifies sewer-tap limitations as a growth constraint.
7. Check Critical Area and floodplain mapping. Waterfront-site constraints can matter independently of zoning.
8. Obtain Town approval before submitting the County building-permit package. Calvert County specifically requires municipal Beach approval for North Beach projects.

12. North Beach vs. Chesapeake Beach: adjacent towns, separate ADU rules

North Beach and Chesapeake Beach sit next to each other along the same Calvert County waterfront, but homeowners should not merge their zoning rules. Chesapeake Beach currently publishes a different legacy ADU framework and has a separately documented 2026 rewrite process. North Beach has its own accessory-apartment text, its own Planning Commission and Town Council process, and its own municipal approval before the County building permit.

13. Bottom line

North Beach already recognizes accessory apartments, but its currently published rules are not the end of the 2026 story. The Town is separately responsible for aligning its municipal zoning framework with Maryland HB 1466, and its current 5,000-sq-ft lot threshold, fixed 800-sq-ft detached cap, one-space parking rule and owner-occupancy condition all need to be read in that transition context.

The most important homeowner step is jurisdictional: get the current zoning answer from North Beach first, then move into Calvert County’s building-permit system. For statewide requirements, use the Maryland ADU Guide 2026; for municipal comparisons, see the Chesapeake Beach guide.

Primary sources used for this North Beach draft

• Town of North Beach — Ordinance 22-01 / current accessory-apartment standards
• Town of North Beach — February 5, 2026 Council Work Session Minutes, HB 1466/SB 891 update
• Town of North Beach — 2026 Agenda Center / Planning Commission records
• Town of North Beach — Certificate of Use and Occupancy / Change in Use application
• Calvert County — Accessory Apartment permit guidance
• Calvert County — Residential Building Permit application hosted by North Beach
• Maryland Land Use §4-501 — ADU definition and 75% limit
• Maryland Land Use §4-504 — local-law deadline, setbacks and parking-study requirements
• Maryland Department of Planning — HB 1466 FAQ

Last verified September 13, 2026. No newer enacted North Beach ADU ordinance, final HB 1466 parking study, or final ADU parking-waiver ordinance was located in the official Town materials reviewed. Verify the current Town interpretation before paying for final plans.