Longboat Key, FL
Grand Mariner
Estate-sized condominiums on Sarasota Bay at the north end, wrapped around a private protected harbor with deep-water slips for vessels up to about 70 feet. Serious dockage, with a bayfront pool, tennis, and fitness to match. The county roll assesses 14 units, built 2008, in Manatee County.
Price Range
Est. $2M to $3M
Home Types
Bayfront condominium
Total Homes
14 units
Amenity Level
High
Amenities & lifestyle
- Private protected harbor
- Deep-water slips (large vessels)
- Heated bayfront pool
- Tennis
- Fitness center
Michael’s Take
County roll: 14 units, built 2008, assessed in Manatee County. No CDD; Longboat Key carries none.
How Grand Mariner compares
From the county records
7%
Of the 14 finished houses here carry a homestead exemption, which reads as almost entirely second homes, rentals and investors.
Newest building completed 2008. The roll records no completions here in the last three years, so this is a built-out community rather than one still being delivered.
Arm’s-length sales recorded with Manatee County, read October 2026. Quitclaims, foreclosures, family transfers and pre-construction sales are excluded. Homestead requires the property to be a permanent residence, so the share carrying one is a strong proxy for how many owners live here full time, not a census of them.
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Grand Mariner FAQ
How much do homes in Grand Mariner cost?+
Homes in Grand Mariner are generally priced in the Est. $2M to $3M range. Pricing moves with the market and varies by floor plan, lot, and incentives, so reach out for the most current numbers.
What kind of homes are in Grand Mariner?+
Grand Mariner offers bayfront condominium. Attached homes carry an association that maintains the building itself, so the fee covers more than it would on a single-family home and the association's reserves matter to you directly. What a specific home includes, and what the association maintains, is set out in that community's documents and is worth reading before an offer rather than after.
What amenities does Grand Mariner have?+
Grand Mariner offers Private protected harbor, Deep-water slips (large vessels), Heated bayfront pool, Tennis, Fitness center. Worth separating two things that often get blurred together: amenities the HOA maintains and which every owner pays for, and club or golf facilities that may require a separate membership on top. Which category each amenity falls into determines your actual annual cost, and it is set out in the community documents rather than in any listing.
Do people live in Grand Mariner year round?+
7% of the 14 finished homes in Grand Mariner carry a homestead exemption, which Florida grants only on an owner's permanent residence. That reads as almost entirely second homes, rentals and investors. It is a strong proxy rather than a census, since an owner who lives there but never filed does not appear in it, but it is the most direct public signal of how occupied a community is outside the winter.
Is Grand Mariner still being built?+
The most recent home the county records in Grand Mariner was completed in 2008, across 15 platted parcels of which 14 carry a finished home. The county records no completions here in the last three years, so Grand Mariner is built out and what trades is resale rather than new construction. Build year matters more in Florida than buyers expect, because insurers weight roof age heavily and it drives what a property costs to carry rather than just what it costs to buy.