Ocean One, Sunny Isles Beach: What Buyers Should Check

Ocean One is the first tower of Related Group's Ocean series on the north end of Sunny Isles Beach — an exclusive enclave of twin, 30-story towers at 19333 Collins Avenue, completed in 1999, designed by Sieger Suarez, and sitting on 700 feet of private beachfront on a 6.3-acre site. It is the oldest of the Ocean towers and the quietest of the three: 241 residences, all two- and three-bedroom flow-through homes from 1,457 to 2,420 square feet, plus penthouses, with a private beach club, a heated beachfront pool and spa, a fitness center on the fourth floor between the towers, and two lighted tennis courts. The market here is thin and steady rather than hot: four to six sales in the last twelve months, mostly between $1.1 million and $1.5 million, at roughly $630 to $900 per square foot, with six to eight homes listed for sale in November 2026. Monthly dues run about $1.39 to $1.40 per square foot — roughly $2,456 a month on a 1,756-square-foot two-bedroom — which is moderate for this strip. Two things a buyer must look into before anything else: as a 1999 oceanfront building, its first milestone inspection falls around 2024 on the 25-year coastal rule, so the report should already exist — and unlike its sisters Ocean Two and Ocean Three, Ocean One does not appear on the published list of 35 barrier-island buildings the University of Miami's 2024 subsidence study found settling, which is a genuine point in its favour. Rentals are long-term only, with a one-year minimum, and pets are capped at 20 pounds.

The facts

• Address: 19333 Collins Avenue, Sunny Isles Beach, FL 33160
• Completed: 1999
• Stories: 30 — twin towers
• Residences: 241
• Developer: Related Group (confirmed by the Ocean III description, which names Ocean I and Ocean II as Related Group's prior Sunny Isles developments)
• Architect: Sieger Suarez Architectural Partnership
• Unit mix: two- and three-bedroom residences, plus penthouse suites
• Unit sizes: 1,457 to 2,420 sq ft (developer floor plans); Redfin records #708 at 1,930 sq ft where the developer plan says 2,420
• Waterfront: oceanfront, direct beach access, with 700 feet of private beachfront on a 6.3-acre site
• Parking: two assigned, side-by-side parking spaces and a private storage space are listed for at least one residence (#708); valet service is available building-wide
• Association: Ocean One Condominium, (305) 931-1232

Amenities and day-to-day living

Ocean One runs a full resort-style program across its two towers and the space between them: a private beach club with beachside cabanas, an oversized heated beachfront swimming pool and spa, a health and fitness center on the fourth floor between the towers with state-of-the-art equipment, sauna and steam rooms, two lighted tennis courts, a clubhouse, barbecue and picnic areas, and bike storage. Residences have private key-code elevators leading to a private foyer, floor-to-ceiling glass, gourmet kitchens, and marble bathrooms. The building has 24-hour security, a full-time concierge, and valet service. It is a quiet, residential building — no hotel program, no restaurant on site — and the two-tower layout means the pool, fitness center, and tennis sit between the towers rather than at the water's edge. The market is thin. Four to six sales closed in the twelve months to November 2026, including #510 (1,930 sq ft) at $1,290,000 in October 2026 ($668/sq ft), #1903 (1,457 sq ft) at $1,300,000 in October 2026 ($892/sq ft), #1402 (1,756 sq ft) at $1,530,000 in July 2026 ($871/sq ft), and #2304 (2,420 sq ft) at $1,519,000 in July 2026 ($628/sq ft). Earlier closings ran $755 to $899 per square foot. Six to eight residences were listed for sale in November 2026, and five were listed for rent — a three-bedroom at $9,100 to $9,250 a month.

What to check before you buy

• Monthly cost — verify the dues, don't take the range. No verified building-wide dues figure was found. Two per-unit examples land in the same place: #1402 (1,756 sq ft) at $2,456 a month and #708 (1,930 sq ft) at $2,689 a month — about $1.39 to $1.40 per square foot per month. That is the figure to confirm against the adopted budget for the specific unit you are buying, including whether any special assessment is running.
• Milestone inspection — due now. Completed in 1999, Ocean One's first milestone inspection falls around 2024 on the 25-year coastal rule for buildings within three miles of the coast. The report should exist or be in progress. Ask for it, along with the structural integrity reserve study, before you sign — not after.
• Subsidence — not on the study's list, which is a real positive. Ocean One does not appear on the published list of 35 barrier-island buildings the University of Miami's 2024 InSAR study found settling between 2 and 8 centimeters from 2016 to 2023 — unlike its sisters Ocean Two and Ocean Three, which are both named. The study's authors said no building was found unsafe, and the absence of Ocean One from the list is a point in its favour, not a guarantee: ask the association whether any engineering review or monitoring has been done, and whether the milestone report addresses settlement at all, since heavy construction has continued all around it.
• Reserves and assessments — unverified. No building-wide reserve figure or assessment history was found in public sources. Given the building's age and the milestone timing, the reserve study and the last three years of board minutes are essential reading.
• Owner-occupancy — unverified. No owner-occupancy ratio was found in public sources. If you are financing, your lender will check it — confirm it before you are under contract, not after.
• Rentals — long-term only, but the listing record is not perfectly clean. One building directory states long-term rentals only, once a year, with a one-year minimum, and leasing after purchase is permitted. Yet a current rental listing for #1907 offers a 12-month lease at $9,100 a month or a 6-month lease at $11,000 a month — a six-month term does not sit with a strict one-year minimum. Confirm the current lease rules, any rental caps, and the association approval process with the association before buying for income — and do not buy here expecting short-term rental income.
• Pets — capped at 20 pounds. One building directory gives a maximum of 20 lbs with possible restrictions. Confirm the current rules — including any breed or count limits — with the association before you buy if a pet is part of the plan.

Who this building suits

Ocean One suits a buyer who wants a large, established oceanfront residence — 1,457 square feet and up, with real separation between bedrooms and a flow-through layout — on the quieter north end of the strip, in a twin-tower beach club with 700 feet of private beach, at a per-square-foot price well below the new branded towers nearby, and who is willing to do the diligence a 1999 building demands: read the milestone report, the reserve study, and the assessment history before signing. It is not for a buyer who wants a turn-key new tower, a small studio, short-term rental income, or a large pet — the smallest residences are 1,457 square feet, rentals are long-term only, and pets are capped at 20 pounds.