Seawall repair help·Lower Keys
Neighbors & shared planning

Shared Canal Seawalls in the Keys: Plan With Neighbors

Keys canal lots sit wall to wall, so one failing panel often raises a question for the whole row. Plan the barge, the permits and the canal together, then let each owner sign their own contract.

Three neighboring canal homes in the Lower Keys sharing one continuous concrete seawall, with small docks
Nearby homes, individual property decisions.
Start a neighbor group

Plan together. Choose for your own property.

Nearby projects may share equipment setup, deliveries and planning. Ask whether coordinating the work could reduce costs for your group.

Start by finding out who is interested. Each owner chooses their own work, price and agreement after their wall has been checked.

Share the planning

Explore equipment setup, access and timing together.

Check each wall

Each property needs its own assessment and permit review.

Keep your own choice

Each owner chooses their own work and agreement.

Four simple steps

One conversation to get started. A separate decision for every owner.

  1. Tell us about your area

    Add your canal or community and a callback number. You can start before you have a full group.

  2. Invite nearby owners

    After your request is accepted, share your invitation link or print a neighbor flyer. Each neighbor enters their own details.

  3. Check what can be shared

    Discuss your group’s needs and the next steps. Each wall, equipment access and preferred dates need to be checked.

  4. Decide for your property

    Review the proposed work and price for your property. You decide whether to go ahead.

Who can explore a group?

Start with nearby properties on the same canal, street or lake. Aim for 3 interested homes as a planning target; you can register interest before that. Different walls or permits may require separate work.

Representing an association? See the HOA project guide for ownership, board decisions and phased planning.

Common questions

Do we have to sign one contract?

Each owner should have a written description of their work, price and agreement. If equipment crosses a neighbor’s property, agree on access in advance.

What if a neighbor drops out?

Each owner makes their own decision. Before agreeing to work, ask how the price would change if fewer homes take part.

Can walls have different lengths or materials?

Yes. The walls can be different. A professional can check whether the projects could share equipment setup or deliveries.

How do we arrange a site visit?

Tell us about the group and your concerns. Discuss the next steps, including whether a site visit is needed and how to arrange it.

Can an association organize a group?

Yes. A board member or other authorized representative can get started. Let us know which walls the association owns and which belong to individual owners.

Are permits shared?

Each property may need its own permit. Ask the project professional and local permitting office which applications are needed and who will handle them.

Key Colony Beach ties each wall to its neighbors

Key Colony Beach calls seawalls the most suitable erosion control for most of the city, and requires them wherever state or federal agencies allow. KCB Code Sec. 5-25 Its design rules link one lot to the next.

  • Height: a new wall matches the adjoining wall, or the higher of two. KCB Code Sec. 5-51
  • Alignment: the cap edge sits on the platted property line. The building inspector can allow a shift to meet a neighbor’s wall. KCB Code Sec. 5-50
  • Full frontage: each lot’s wall runs its whole water frontage and is built at one time, not in portions. KCB Code Secs. 5-52 to 5-55
  • Ends: where a wall end does not meet an existing wall, the code calls for a return slab at least 5 inches thick. KCB Code Secs. 5-52 to 5-55

The city’s seawall manual says most walls there are at least 75 feet long. KCB Seawall Owner’s Manual Four neighboring lots can add up to 300 feet of wall or more. See the Key Colony Beach guide.

Barge access, bonds and the work-over-water notice

On a built-out canal, the wall is often easier to reach from the water than from the yard. The Key Colony Beach manual says developed lots often need barge work. KCB Seawall Owner’s Manual

The same manual lists what adds cost: houses, docks, davits, trees, sprinklers and conduits near the wall. KCB Seawall Owner’s Manual

Water-side items to plan as a group
ItemWhereQuestion for the group
$50,000 bond before water-borne equipment enters the city
Key Colony Beach
Can one mobilization and one bond serve several lots? KCB Code Sec. 5-61
Work Over the Water Notice, signed by owner and contractor and notarized
Unincorporated Monroe County
Who signs for each lot, and when? Monroe County Work Over the Water Notice
Longshore and Harbor Workers’ Compensation coverage
Named in Florida’s marine contractor rule
Has each contractor shown a certificate? Rule 61G4-15.100(4), F.A.C.

Before the first meeting, map every dock, lift, davit and return along the row. Mark the lots with no yard access at all.

The canal itself: restoration programs and debris history

Monroe County started its Canal Restoration Program in 2014. A study had found 311 of 502 Keys canals failing the state’s minimum water quality criteria. Monroe County Canal Restoration Program It is a water quality program, not a seawall repair fund.

  • The county’s Canal Management Master Plan ranks 96 unincorporated canals with poor or fair water quality. Its Residential Canals map file shows each canal’s number, depth and ranking. Monroe County Canal Management Master Plan
  • Methods include organic removal, backfilling, culverts and weed gates. Ask the program, (305) 453-8774, if work is planned on your canal before you book a barge. Monroe County Canal Management Master Plan
  • After Irma, the county sent 422 canals for marine debris removal, and 247 were approved. Federal debris money underwater was limited to navigation hazards. Monroe County BOCC paper

Use the county’s canal number in every group email and bid request. It keeps everyone talking about the same water.

One schedule, separate permits and contracts

A group can share surveys, a barge and a calendar. Each lot still needs its own approvals and its own contract.

Residential contracts over $2,500 must include the Florida Homeowners’ Construction Recovery Fund notice. Section 489.1425, Fla. Stat.

If a contractor takes more than 10% up front, Florida law requires permit applications within 30 days, unless there is just cause or you agree in writing. Section 489.126, Fla. Stat. Give every owner the same scope checklist so the bids compare.

Show sourcesHide sources
Your next step

Start a neighbor group

Tell us your canal or community and how to reach you. Use this guide to work out the next steps for your group.

Prefer to talk it through?(786) 644-6444

Getting your form ready…

Get help with your seawall.

Tell us where your property is and what your seawall needs.

Every answer here links to the public record behind it.