Mansions By The Sea Condo
Homes for Sale in Treasure Island, FL

Community in Treasure Island · Pinellas County
176 homesBuilt 1980–1987
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Built fromLive Stellar MLS data15 years of closingsFL DOR public recordsUpdated twice daily
Live · Mansions By The Sea Condo Housing Pulse Stellar MLS + public records Analysis by Momentum Realty · $3.5B+ sold · 8,500+ transactions · Top 1% in Florida (RealTrends)
Tempo
2
Sold · last 12 mo
10-yr average: about 5 a year
Ownership and context
18%
Owner-occupied · Mansions By The Sea Condo
32 of 176 parcels homesteaded (FL DOR 2025)
82%
Non-owner-occupied · Mansions By The Sea Condo
incl. 14% trust or LLC-held · 57% out-of-state
67%
Cash buyers · Mansions By The Sea Condo
2 of 3 sales, 12 mo ending June 2025
176
Homes in the community
176 residential parcels (FL DOR 2025)
Track record · 15 years of records
Est. 1980
Community established
homes built 1980-1987, median 1984 (FL DOR 2025)
4
Failed listings · 2026
peaked at 15 in 2024
1.1%/yr
Turnover rate
about 2 of 176 homes trade a year
Jon Brooks, founder of Momentum Realty
Jon's Current Read

Mansions By The Sea is a 173-unit condo community in Treasure Island, built out over a tight window from 1980 to 1987. With a median living area around 1,140 square feet and a median build year of 1984, this is a mature coastal building where price is driven far more by unit condition, floor, exposure, and view than by square footage — the footprints don't vary much, so what separates one closing from the next is the interior and the outlook.

The transaction pace has been thin recently, with only a couple of closings in the current window. That means individual sales carry outsized weight, and both sides should treat any single comp with caution. For a seller, condition and presentation are the levers you control; for a buyer, it's a market where patience and a willingness to underwrite the specific unit — not the building average — pays off.

Best for

  • Buyers seeking a coastal condo as a seasonal or investment holding who will scrutinize HOA finances
  • Buyers who value an updated interior and a good view over raw square footage
  • Buyers comfortable with a thin comp set and willing to underwrite a specific unit

Probably not for

  • Buyers who need a large floor plan or newer construction
  • Buyers who want a deep pool of recent comparable sales to anchor an offer
  • Buyers seeking low, highly predictable carrying costs in an older coastal building

The market around Mansions By The Sea Condo

Mansions By The Sea Condo is a small community — 98 recorded sales on file, most recently in 2026 — too few for its own price trend. Here is the market around it.

Across Pinellas County, 6,909 homes are active and 1,852 pending (21% under contract).

Homes here are condominium.

ZIP and county figures describe the wider market, not Mansions By The Sea Condo specifically. Momentum Research analysis of MLS records.

If we were buying in Mansions By The Sea Condo today, this is the order of operations we would run for our clients.

1

Underwrite the condition first. Price the roof, HVAC, and systems honestly before judging any list price; condition swings value here more than square footage alone.

2

Match the home to real comps. Recent sales of similar condition and lot, not the asking price, tell you what a home is worth.

3

Move deliberately, not desperately. Neither side has a decisive edge, so a well-prepared, fairly-priced offer wins without overpaying.

4

Line up financing and inspection early. A pre-approval and an inspection plan let you act fast and negotiate from evidence.

5

Keep an agent in your corner. The listing agent works for the seller; we represent you and prepare a hand-built valuation before any offer in Mansions By The Sea Condo.

Best Buy
Buyers who want an established Treasure Island condo and will value each unit on condition and view, not building averages.
Biggest Risk
A thin recent sales pace means single comps can mislead, and 1980s-vintage buildings carry insurance and assessment exposure.
Sweet Spot
A well-updated unit with a strong floor and exposure, bought after a close read of the association books.
Avoid If
You need deep comps, predictable low carrying costs, or a large floor plan.

A condition-driven condo market

With units built between 1980 and 1987 and a median living area near 1,140 square feet, Mansions By The Sea offers a consistent product type rather than a wide range of floor plans. That consistency cuts both ways: it's easy to compare like against like, but it also means updates, views, and floor placement do the heavy lifting on value. Buyers should expect a wide spread between renovated and original units even within a narrow size band.

The homestead share here sits under 20%, which tells you a large majority of units are not owner-occupied primary residences — consistent with a coastal condo used seasonally or as an investment. Anyone buying should read the association's documents closely: reserves, insurance, and any assessment history matter enormously in a building of this vintage, and they belong at the center of your due diligence.

The location and the amenities are priced into every listing in Mansions By The Sea Condo. The deal is won or lost on condition, the comps, and the renovation math.

Jon Brooks · Founder, Momentum Realty

Why work with Momentum here

In a building where recent closings are few and value hinges on the specific unit, generic pricing guidance falls apart. We underwrite each unit on its own merits — condition, floor, exposure — and we push on the association financials and insurance posture that make or break a 1980s coastal condo, so you go in with eyes open on both price and carrying costs.

Mansions By The Sea Condo in 15 seconds.

Best forBuyers who want an established Treasure Island condo and will value each unit on condition and view, not building averages.
Biggest advantageA consistent, similarly-sized unit type makes true like-for-like comparison possible.
Biggest riskA thin recent sales pace means single comps can mislead, and 1980s-vintage buildings carry insurance and assessment exposure.
Sweet spotA well-updated unit with a strong floor and exposure, bought after a close read of the association books.
Avoid ifYou need deep comps, predictable low carrying costs, or a large floor plan.

HOA, CDD & Fees

In short
  • Mandatory HOA — confirm current dues
  • Any club/amenity membership is billed separately

Confirm the current HOA dues, exactly what they cover, and any CDD bond or special assessment for a specific address before you offer.

The takeaway

Selling here is won on condition and pricing to real comps, not an automated estimate. The right number comes from closed Mansions By The Sea Condo sales matched to your home.

What is your Mansions By The Sea Condo home worth?

Get a no-obligation home value based on real comparable sales in Mansions By The Sea Condo, not an automated guess. Tell us about your home and we will personally prepare your numbers and a pricing strategy. No obligation, no spam.

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Real comps, not an automated estimate.

Frequently Asked Questions

How many homes are in Mansions By The Sea Condo?
The Florida DOR 2025 assessment roll shows 176 homes in Mansions By The Sea Condo (public records).
What share of Mansions By The Sea Condo is owner-occupied?
18% of Mansions By The Sea Condo parcels carry a homestead exemption on the 2025 Florida DOR roll, the owner-occupancy proxy in public records.
When were the homes in Mansions By The Sea Condo built?
Homes in Mansions By The Sea Condo were built between 1980 and 1987, with a median year built of 1984.0 (FL DOR 2025 roll).
Do cash buyers compete in Mansions By The Sea Condo?
Cash buyers took 67% of Mansions By The Sea Condo sales in the 12 months ending June 2025 (2 of 3 closings, Stellar MLS).
Who is the best real estate agent for Mansions By The Sea Condo?
The best agent for Mansions By The Sea Condo is one who actively works Treasure Island and knows the community's pricing, fees, and current inventory. Tell us what you're looking for in the form on this page and Momentum Realty will match you with a local specialist for Mansions By The Sea Condo.
How do I find a top Treasure Island real estate agent who knows Mansions By The Sea Condo?
Share a few details in the form on this page. Momentum Realty has 280+ agents and more than $3.5B in closed sales, and we'll connect you with one who knows Mansions By The Sea Condo and the wider Treasure Island area.
Can Momentum Realty connect me with an agent for Mansions By The Sea Condo?
Yes. Use the form on this page and we'll introduce you to a local specialist who can guide your Mansions By The Sea Condo purchase or sale - no call center and no pressure.
Buyers seeking a coastal condo as a seasonal or investment holding who will scrutinize HOA financesExcellent fit
Buyers who value an updated interior and a good view over raw square footageExcellent fit
Buyers comfortable with a thin comp set and willing to underwrite a specific unitExcellent fit
Buyers who need a large floor plan or newer constructionProbably not
Buyers who want a deep pool of recent comparable sales to anchor an offerProbably not
Buyers seeking low, highly predictable carrying costs in an older coastal buildingProbably not

Data sources & freshness

Housing stock & ownershipFlorida DOR 2025 assessment roll (street-list match (31 streets, ZIP 33706))
Under-contract sharesStellar MLS records, as of 2026-07-12
Historical depthClosed-sale records back to 2011 (67 transactions analyzed)

Verify the primary sources yourself: Florida DOR · U.S. Census · FEMA flood maps · Citizens Property Insurance.

Momentum Research figures are our own analysis of Stellar MLS records; MLS data is deemed reliable but not guaranteed. Methodology: how Momentum market scores are computed. Market metrics describe homes for sale and recent sales, not residents.

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