By The Sea
Condos for Sale in Sanibel, FL
All 110 homes for sale in Sanibel, FL · median $759,000 · 106 condos for sale in Sanibel · 214 homes for sale in 33957 · Lee County homes for sale
True comps, carrying-cost math, and listings before the portals.
The honest starting point here is data volume. With only a single closing in the current window, there isn't enough transaction history to draw a reliable pricing trend for By The Sea Condo. Anyone quoting a confident price-per-square-foot or a firm appreciation curve for this building is guessing beyond what the MLS record actually supports.
That doesn't mean the building is untouchable, it means pricing has to be built from the ground up: recent comparable closings pulled by hand, condo docs reviewed line by line, and an offer strategy that accounts for a thin resale market rather than a deep one. Sellers should expect a longer marketing conversation about value, and buyers should expect to negotiate with less leverage from public comps and more leverage from direct diligence.
The 60-Second Overview
By The Sea Condo sits within Sanibel's condo inventory in Lee County, but current MLS activity is too limited to characterize a typical price point or turnover pace with confidence.
Pre-construction details are compiled from public records, builder announcements and builder listings, and are subject to change without notice; figures are deemed reliable but not guaranteed. Momentum Research figures are our own analysis. This page describes homes, pricing and community attributes, not residents.
Who By The Sea Condo is best for.
Best for
- A buyer focused on a specific Sanibel condo building rather than shopping across the island broadly.
- Someone comfortable making a decision based on direct unit inspection and condo document review rather than a deep comparable-sales history.
- A buyer with flexibility on timeline who can wait for the right unit rather than needing quick turnover options.
Probably not for
- A buyer who wants confirmed community amenities listed and verified before touring.
- Someone who needs several recent comparable closings to validate an offer price.
- A buyer expecting a fast, high-volume resale market with frequent listing turnover.
The market around By The Sea Condo
By The Sea Condo is too small for its own price trend, so here is the market around it.
In ZIP 33957, 245 homes are on the market and 14% are under contract — a slower corner of Sanibel.
Across Lee County, 9,645 homes are active and 2,286 pending (19% under contract).
In ZIP 33957 (Sanibel), 315 homes closed in the last 12 months at a median of $756K ($523/sq ft), up 5.7% year over year, with a median 105 days on market. Right now 118 active and 22 pending listings — a buyer's market. See the live ZIP 33957 housing market and the Lee County market.
ZIP and county figures describe the wider market, not By The Sea Condo specifically. Momentum Research analysis of MLS records.
The By The Sea Condo buying strategy.
If we were buying in By The Sea Condo today, this is the order of operations we would run for our clients.
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.
Match the home to real comps. Recent sales of similar condition and lot, not the asking price, tell you what a home is worth.
Move deliberately, not desperately. Neither side has a decisive edge, so a well-prepared, fairly-priced offer wins without overpaying.
Line up financing and inspection early. A pre-approval and an inspection plan let you act fast and negotiate from evidence.
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 By The Sea Condo.
A building with a thin trail
Sanibel's condo stock generally trades on proximity to the water, building age and maintenance condition, and how recently common areas and mechanical systems have been updated post-storm. For By The Sea specifically, the MLS feed does not currently return enough closed activity to say where this building lands within that range, and no community amenities are listed on active records.
That gap in the record is itself useful information. It tells a buyer to ask directly about association reserves, insurance history, and any post-storm remediation rather than relying on a market narrative, since there isn't one yet to lean on. It tells a seller that the listing itself will have to do more of the persuading, because there is no recent comparable trail doing it for them.
The location and the amenities are priced into every listing in By The Sea Condo. The deal is won or lost on condition, the comps, and the renovation math.
Why work with Momentum here
When a building's MLS history is this thin, the value of a broker shifts from reciting market stats to doing the manual work: pulling condo association documents, checking building-specific insurance and reserve standing, and pricing off direct unit comparisons rather than a building-wide average. That is the work we do before writing a number on either side of a By The Sea transaction.
By The Sea Condo in 15 seconds.
HOA, CDD & Fees
- HOA status not on record. Verify any dues before you offer
- 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.
Tools for a By The Sea Condo buy.
Free calculators to pressure-test the real cost before you tour.
Selling here is won on condition and pricing to real comps, not an automated estimate. The right number comes from closed By The Sea Condo sales matched to your home.
Price it to the comps and condition, not an automated estimate.
If you are thinking about selling in By The Sea Condo, the right list price comes from recent comparable sales matched to your home's condition and location, not an automated estimate.
What is your By The Sea Condo home worth?
Get a no-obligation home value based on real comparable sales in 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.
See all homes for sale in Sanibel →
Should you buy in By The Sea Condo?
An honest fit check. We will tell you when it is not your community.
Data sources & freshness
| Under-contract shares | Florida Gulf Coast MLS records, as of 2026-09-08 |
| Historical depth | Closed-sale records back to 2017 (10 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 Florida Gulf Coast 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.
Own a home here?
You just read the data. Now see what your home is worth.
The numbers on this page move markets in the aggregate. The number that matters to you is what a buyer pays for your address. Momentum sells for 1.25% above the Florida Gulf Coast MLS member average and 8 days faster, and we’ll price yours against live local comps.
Looking to buy here? Search homes for sale →
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A real valuation with real comps from a local listing agent, not an instant algorithm. Response within one business day.
See how By The Sea Condo fits the bigger picture — live prices, inventory, and Momentum Scores:
Common questions about By The Sea
Where is By The Sea?
By The Sea is a community in Sanibel, Lee County, Florida, ZIP 33957.
Are there homes for sale in By The Sea right now?
No active listings inside By The Sea at the last feed refresh. In ZIP 33957, 245 homes are on the market and 14% are already under contract.
Does By The Sea have an HOA or CDD?
No HOA is on record for By The Sea in our data. Verify dues, what they cover, and any special assessment for a specific address before you offer.
Answers are generated from county property records, MLS feeds and the figures on this page, as of the page date; deemed reliable but not guaranteed.
The real cost & risk here
Before the list price, the Florida math the portals skip. These are Lee County typicals — your exact home, flood zone, and insurance quote will vary, so verify each before you offer.
Check it for your address: look up your flood zone (FEMA) · insurance by county · true-cost calculator · Lee County scorecard.
County typicals from Momentum’s Florida housing data (Zillow & Realtor.com aggregates, Census, FRED), updated monthly; insurance modeled. Flood zone is property-specific — always confirm via FEMA.