Keystone Point, North Miami: A 2026 Waterfront Buyer's Guide

Last updated: August 2026

If you are underwriting a waterfront house in Keystone Point, North Miami, start with three facts. First, this is a gated subdivision of 880 single-family homes built on dredged fill on the Biscayne Bay side of North Miami, most of them on a man-made canal with a private seawall [1]. Second, "ocean access" does not mean the same thing at every address here: the Keystone Point Homeowners Association tells its own members that the channels serving the neighborhood have very limited access for boats drawing more than four feet, that the south channel gets very shallow at low tide, and that the north channel entrance is unmarked [2]. Third, the route out toward the Intracoastal passes the Broad Causeway, which the Coast Guard regulates as a drawbridge that opens on signal with restricted daytime openings, not as a fixed span [3].

So for Keystone Point waterfront homes, the binding constraint on your boat is often water depth and channel condition, and secondarily overhead clearance, and both vary by canal. Verify the route for the specific address, with the specific boat, before you write the offer.

What the housing stock and the lots actually are

Keystone Point was dredged and filled in the 1950s and 1960s. The land is a set of fingers and peninsulas separated by cut canals, which is why so many lots have water on one or two sides and why the street pattern ends in cul-de-sacs rather than a grid.

The original product is a one-story, slab-on-grade house of that era: concrete block, low roof pitch, three or four bedrooms, and a floor elevation set by mid-century standards rather than current floodplain code. Much of the inventory has since been renovated or replaced with two-story contemporary construction, so the neighborhood runs from original houses to new builds on the same block.

For underwriting purposes, a purchase here is three assets stacked on one parcel: the land, the shoreline structure, and the water access. The house is often the least valuable of the three.

The fixed bridge question, stated plainly

Air draft is the height of the tallest fixed point on your boat above the waterline: hardtop, tower, antenna, outriggers. A fixed bridge sets a hard ceiling that the tide moves by a foot or so. A movable bridge sets a schedule, not a ceiling.

The Broad Causeway crossing on the Atlantic Intracoastal Waterway is a drawbridge under federal drawbridge operating regulations, required to open on signal, with openings restricted to set intervals during daytime hours [3]. That is a scheduling constraint, not a height ceiling.

Inside the community, North Bayshore Drive crosses the canal system on two roadway bridges the City of North Miami maintains as a capital repair project [4]. Any home whose only route to open water passes beneath a roadway crossing is clearance-limited by it. Do not assume those crossings are movable, and do not assume they are irrelevant because a listing says "ocean access."

I am not going to quote a clearance figure for the interior crossings, because I cannot source one to a city, county or federal record, and a wrong number here is the most expensive kind of wrong number in a canal community. Do this instead.

The diligence that actually settles it

Identify the exact canal the property sits on and trace both routes to open water on the association's marine map before you tour the house.
Ask the seller in writing what boat was kept there, its draft and air draft, and whether it ever waited on tide or a bridge opening.
Hire a captain or marine surveyor to run the route at mean high water, in the vessel you intend to own, and report the controlling depth and overhead clearance.
Ask the City of North Miami's transportation staff for as-built information on any roadway crossing on your route.

If your boat is a small center console, this resolves quickly. If you want a sportfish or a flybridge, this diligence is the deal.

Seawalls: who owns them and who pays

In this kind of platted canal subdivision the seawall is a private structure on the owner's parcel. Replacement is a marine construction project, not a maintenance line item, and it is the owner's cost. The association does not fund it.

What to look for on a walk: cracking or spalling in the cap, panel rotation or lean, depressions and sinkholes in the yard behind the wall, soil loss at the panel joints, and rust staining that indicates corroding reinforcement. Any of those move the inspection from a general home inspector to a marine or structural engineer.

Then pull the permit history. Work in, on, over, or upon tidal waters or coastal wetlands in Miami-Dade requires a county Class I environmental permit before work begins [5], in addition to a city building permit. If a prior owner replaced or capped the seawall without those permits, the exposure transfers to you at closing.

Dock and lift permitting

Docks, lifts, davits and dredging sit under the same county framework, and the county also administers expedited administrative authorizations for qualifying minor work [5]. State and federal review can apply on top of that. Treat every existing dock, lift and davit as unpermitted until the file says otherwise, ask for permit numbers and final inspection sign-offs, and build permitting calendar time into any plan to add or enlarge a dock.

Elevation, flood insurance, and 1950s slab construction

A house built in the 1950s or 1960s on fill predates modern floodplain elevation requirements. The document that tells you where you stand is the elevation certificate, which records the lowest floor elevation relative to the base flood elevation. Miami-Dade maintains a search application for certificates in its records, and advises that for older homes with no certificate on file you may need to hire a surveyor or obtain it from the prior owner [6].

Get that certificate before you are deep into a renovation budget, because it drives two decisions.

The first is insurance. Lowest floor elevation relative to base flood elevation is a primary rating input, and a low original slab is permanent.

The second is the substantial improvement rule. Under the National Flood Insurance Program, any reconstruction, rehabilitation, addition or other improvement whose total cost equals or exceeds 50 percent of the market value of the structure before construction begins is a substantial improvement, and the building must then be brought into compliance with current floodplain requirements [7]. On a Keystone Point lot, where land is a large share of total value, the structure's market value is comparatively low, so the 50 percent line is also low. A renovation a buyer thinks of as cosmetic-plus can cross it and change the entire budget.

Renovate or rebuild: run the lot-value math first

Before you price a renovation, pull the parcel on the Miami-Dade Property Appraiser site and look at land value and building value separately. That split is the whole decision. When land carries most of the value, a deep renovation spends money on the least valuable component while permanently accepting the original slab elevation and systems. A rebuild resets elevation, code compliance, insurance rating and layout, but adds demolition, a long permitting and construction timeline, carrying cost, and coordination with any seawall or dock work.

A workable three-way test:

Seawall near end of life and the house needing full systems replacement: price the deal as a lot, with demolition and seawall replacement as line items, not as a house purchase.
Sound, recently permitted seawall and a structurally sound house: a renovation scoped to stay under the substantial improvement threshold is usually the better risk-adjusted return.
The middle case, a marginal seawall and a half-updated house, is where buyers most often overpay.

If you are financing, price the deal against current market rates rather than an assumed number. Check the Freddie Mac Primary Mortgage Market Survey directly [8] and have your lender quote the actual construction or renovation product.

How pricing compares to other canal-access markets

For scale, the Miami-Dade single-family median sale price was $685,000 in July 2026 [9]. Keystone Point trades above that, because waterfront frontage is priced separately from the house. But the county median is not your comparison set. The right comparison is other single-family markets where you can keep a boat behind the house: the canal and island sections of Miami Beach and the waterfront pockets near Aventura. Against those, Keystone Point generally prices lower per waterfront foot, because it is mainland North Miami fill rather than a barrier island, and because access is through a canal network with the channel conditions the association documents [2] rather than open bay frontage.

The correct unit of analysis is price per foot of usable water frontage, adjusted for what actually fits at the dock. Two houses at the same asking price on the same street can differ substantially in real value if one takes a 45-foot boat and the other tops out at a small center console. Underwrite the water, then the land, then the house, in that order. To have that run on a specific address, start with a buyer consultation.

Frequently asked questions

Does Keystone Point have fixed bridges?

It depends on the address, because access varies by canal. The Broad Causeway on the Intracoastal is a drawbridge that opens on signal with restricted daytime intervals [3], and North Bayshore Drive crosses the interior canals on two roadway bridges maintained by the City of North Miami [4]. Treat any blanket "no fixed bridges" claim in a listing as unverified until a captain or marine surveyor confirms the route for that property.

What size boat actually fits in Keystone Point?

It depends on the canal and the route, and depth is often the first limit. The association states that channels serving the neighborhood have very limited access for boats drawing more than four feet, that the south channel is very shallow at low tide, and that the north channel entrance is unmarked [2].

Who pays for seawall repair?

The seawall is a private structure on the waterfront parcel, so the owner pays. Replacement requires a Miami-Dade Class I permit for work in tidal waters plus a city building permit [5]. Order a seawall inspection from a marine or structural engineer during the inspection period, and pull the permit history rather than relying on a seller's description.

Will a renovation trigger a flood-compliance upgrade?

It can. Improvements costing 50 percent or more of the structure's pre-construction market value are substantial improvements under the National Flood Insurance Program [7]. Because land is a large share of value on these lots, that threshold arrives at a lower budget than owners expect. Confirm the figure with the City of North Miami building department, and have a Florida real estate attorney review your specific situation.

Gabriel

Sources

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Gabriel A. Moyers, PA. eXp Realty. Florida License #3407280. Equal Housing Opportunity. This article is general information as of August 2026 and is not legal, tax, or financial advice. Verify current figures against authoritative sources before acting.