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Dock, pier and float rules in Rockport, Maine

Rockport, Knox County · Ordinances checked 2026-10-01 · Reviewed · 13 cited sections

Allowed with board review

Yes, but a pier, wharf or float in Rockport needs a permit from the Rockport Planning Office after review: the Harbor Committee and Harbormaster review pier applications and make recommendations to the Planning Board, which reviews them under the shoreland rules. Each lot is limited to one pier or wharf, a private residential pier can be no wider than 6 feet, and piers can't extend more than 150 feet beyond mean high water (or to mean low water, if shorter).

Piers/wharves per lot1 (a second only with twice the minimum shore frontage) [1]
Spacing from existing piersAt least 100 ft [1]
Max pier length150 ft beyond mean high water, or to mean low water if shorter [2]
Max width, private residential pier6 ft (common 10 ft, commercial 12 ft) [3]
Float and ramp reach50 ft beyond pier/shore (inner and middle harbor); 60 ft (outer harbor); 200 ft total pier+ramp+float [5]
Pier deck height8 ft above mean high water (inner/middle harbor); 10 ft (coastal waters and southern outer harbor) [4]
ApprovalHarbor Committee review, Planning Board review, permit from Rockport Planning Office [7]

Who approves

Rockport regulates piers, wharves, bulkheads and floats through the Coastal Waters and Harbor Ordinance (amended June 10, 2025) and the shoreland chapter of the Land Use Ordinance. For piers, wharves and bulkheads, the Harbor Committee, with input from the Harbormaster, reviews the application and makes recommendations to the Planning Board [6]. The Planning Board then reviews it under the Land Use Ordinance's shoreland standards [7]. Floats attached to an existing pier or wharf are reviewed and approved by the Harbor Committee [11], and floats, moorings and chains must be approved by the Harbormaster [5]. No construction may begin until the Rockport Planning Office issues a permit [7].

Size and placement

Each lot is limited to one pier and/or wharf, and a new one must be at least 100 feet from an existing pier or wharf [1]. The shoreland rules allow a second structure only if the lot has at least twice the minimum shore frontage [9]. No pier or wharf may extend more than 150 feet beyond mean high water or to mean low water, whichever is shorter [2]. Private piers can be no wider than 6 feet [3]. Deck height is capped at 8 feet above mean high water in the Inner and Middle Harbor and 10 feet in coastal waters and the southern Outer Harbor [4]. Floats and ramps may extend 50 feet beyond the pier or shore in the inner and middle harbor and 60 feet in the outer harbor, with no more than 200 feet in total [5]. Only hoisting davits up to 4 feet high may be placed on a pier, wharf or float [12], and floats built or replaced after July 1, 2019 must use encapsulated flotation [13].

Shoreland standards

Under the shoreland chapter, the facility must be no larger than necessary, must not interfere with beaches or fisheries, and no new structure may be built on a pier unless it needs direct water access [10]. Piers and docks are exempt from the shoreland water setback because they need direct access to the water.

State and federal permits

Permanent structures in coastal waters also need state (DEP) and U.S. Army Corps of Engineers approvals, and a lease may be needed for state-owned submerged land (see the state rules below).

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Next steps

  1. Get the pier, wharf and bulkhead application guidelines from the Rockport Planning Office (207-236-0989 ext. 2).
  2. Have your design show length from mean high water, width, deck height, float and ramp lengths, and distance to neighboring piers.
  3. Present the application to the Harbor Committee and Harbormaster, then to the Planning Board for shoreland review.
  4. Apply in parallel for Maine DEP, Army Corps and any submerged-lands lease, and don't start work until the Planning Office issues the permit.

Common questions

Do I need a permit to build a dock in Rockport, Maine?
Yes. A pier, wharf or float needs a permit from the Rockport Planning Office after review. The Harbor Committee and Harbormaster review pier applications and make recommendations to the Planning Board, and no construction may begin until the permit is issued.
How wide can a private pier be in Rockport, Maine?
No wider than 6 feet for a private residential pier. Piers can't extend more than 150 feet beyond mean high water, or to mean low water if shorter.
How many piers can I have per lot in Rockport, Maine?
One pier or wharf per lot, and a new one must be at least 100 feet from an existing pier. The shoreland rules allow a second only with twice the minimum shore frontage.
How far can a float extend in Rockport, Maine?
Floats and ramps may extend 50 feet beyond the pier or shore in the inner and middle harbor and 60 feet in the outer harbor, with no more than 200 feet in total. Floats, moorings and chains must be approved by the Harbormaster.

State and federal rules for docks and piers

DEP permit (Natural Resources Protection Act): Building, repairing or altering a permanent structure in, on or over a great pond, river, stream or coastal wetland needs a DEP permit. "Permanent" means the structure stays in place more than 7 months in any 12-month period. A seasonal dock that comes out each year generally isn't a permanent structure.

State shoreland minimums (your town's ordinance applies these):

  • Only one pier, dock or wharf per lot, unless the lot has at least twice the minimum shore frontage.
  • A temporary, non-commercial dock on fresh water can be no wider than 6 ft.
  • A new permanent dock on fresh water is allowed only if a temporary dock isn't feasible and DEP has issued a permit.
  • No living space on or attached to a dock.

State-owned bottom: Below the low-water mark in tidal waters and in great ponds, the bottom belongs to the state. Permanent structures of any size, and large temporary ones, need a lease or easement from the Bureau of Parks and Lands. Non-permanent structures under 500 sq ft don't need one.

Federal and harbor rules: In tidal waters, docks and floats also need U.S. Army Corps of Engineers approval. Moorings are handled by your town's harbormaster under local ordinance (38 M.R.S. §7).

State sources: 38 M.R.S. §480-C (activities requiring a DEP permit) · 38 M.R.S. §480-B (definition of permanent structure) · Maine DEP Natural Resources Protection Act page · DEP Chapter 1000, Section 15(C) pier/dock standards · 12 M.R.S. §1862 (Submerged lands leases and easements) · Bureau of Parks & Lands Submerged Lands Newsletter (Jan. 2026) · 38 M.R.S. §7 (municipal mooring/harbor ordinances)

What the ordinance says

Exact text from Rockport's published ordinances. Section numbers are as printed in the source.

  1. Sec. 601.1 Dimensional Standards for Piers, Wharfs, Bulkheads and Floats, Coastal Waters and Harbor Ordinance (amended 06-10-2025), p. 13
    601.1 Each lot shall be limited to one pier and/or wharf. No pier or wharf shall be located closer than 100' from an existing pier or wharf, as measured parallel to the shoreline from existing piers.
  2. Sec. 601.2, Coastal Waters and Harbor Ordinance (amended 06-10-2025), p. 13
    601.2 No pier or wharf shall extend further than 150’ beyond ‘Mean High Water’ or to ‘Mean Low Water’, whichever distance is shorter, as measured at the proposed pier location.
  3. Sec. 601.4, Coastal Waters and Harbor Ordinance (amended 06-10-2025), p. 13
    601.4 Pier width shall not exceed 6' for private piers, 10’ for common piers and 12' for commercial piers.
  4. Sec. 601.5, Coastal Waters and Harbor Ordinance (amended 06-10-2025), p. 13
    601.5.1 Inner Harbor – 8’ above mean high water 601.5.2 Middle Harbor and that portion of the Outer Harbor northerly of a line extending from the #5-day marker on the eastern shore to Mackerel Rock on the western shore – 8 ft above mean high water 601.5.3 Coastal waters and that portion of the Outer Harbor southerly of a line extending from the #5-day marker on the eastern shore to Mackerel Rock on the western shore – 10 ft above mean high water
  5. Sec. 601.7-601.8, Coastal Waters and Harbor Ordinance (amended 06-10-2025), p. 13
    601.7 In the inner and middle harbor floats and ramps may extend up to 50’ beyond a pier, wharf or shoreline. In the outer harbor floats and ramps may extend up to 60’ beyond a pier, wharf or shoreline. The aggregate of pier, ramp and float shall not exceed 200’ overall. 601.8 Floats, moorings and chains shall be approved by the Harbormaster.
  6. Sec. 602.2 Harbor Committee Review for Piers, Wharfs and Bulkheads, Coastal Waters and Harbor Ordinance (amended 06-10-2025), p. 14
    602.2 Harbor Committee Review for Piers, Wharfs and Bulkheads: The Harbor Committee, with input from the Harbormaster shall review and make recommendations to the Planning Board for all applications for piers, wharfs and bulkheads.
  7. Sec. 602.4-602.5 Planning Board Review; Permits, Coastal Waters and Harbor Ordinance (amended 06-10-2025), p. 14
    602.4 Planning Board Review: The Planning Board shall receive recommendations from the Harbor Committee and review applications under the provisions of Section 1415.4 of the Rockport Land Use Ordinance. 602.5 Permits - No construction of a pier, wharf, bulkhead or float shall commence until the Rockport Planning Office has issued a permit.
  8. Sec. 202 Definitions, Residential Pier, Coastal Waters and Harbor Ordinance (amended 06-10-2025), p. 5
    Residential Pier: A pier that serves a single residential owner. Residential piers shall not exceed 6 ft. in width.
  9. LUO §1415(3)(a) Piers, Docks, Wharves, Land Use Ordinance (June 9, 2026), p. 149
    a. No more than one pier, dock, wharf or similar structure extending or located below the normal high-water line of a water body or within a wetland is allowed on a single lot; except that when a single lot contains at least twice the minimum shore frontage as specified in Section 1415(1), a second structure may be allowed and may remain as long as the lot is not further divided.
  10. LUO §1415(3)(f), Land Use Ordinance (June 9, 2026), p. 150
    f. No new structure shall be built on, over or abutting a pier, wharf, dock or other structure extending beyond the normal high-water line of a water body or within a wetland unless the structure requires direct access to the water body or wetland as an operational necessity.
  11. Sec. 602.3 Harbor Committee Review for Floats, Coastal Waters and Harbor Ordinance (amended 06-10-2025), p. 14
    602.3 Harbor Committee Review for Floats: The Harbor Committee, with input from the Harbormaster, shall review and approve applications for floats attached to existing piers or wharfs.
  12. Sec. 601.3, Coastal Waters and Harbor Ordinance (amended 06-10-2025), p. 13
    601.3 No structure shall be built or placed on a pier, wharf or float except hoisting davits, which shall not extend more than 4 ft. above the deck.
  13. Sec. 601.9, Coastal Waters and Harbor Ordinance (amended 06-10-2025), p. 13
    601.9 All floats constructed or replaced in the harbor after July 1st, 2019 shall be constructed with encapsulated flotation.
This page summarizes Rockport's posted ordinances as of 2026-10-01. Ordinances are amended, and individual lots can have overlays, subdivision covenants, or HOA rules that are stricter. Confirm with Planning, Community and Economic Development, and Codes - Code Enforcement (207-706-4071 (CEO Andrew Lowe); 207-236-0989 ext. 2 (Planning & Codes clerk)) before you build. Spot an error?