Keystone Island
Homes for Sale in Miami-Dade County, FL
True comps, carrying-cost math, and listings before the portals.
Photo via MIAMI MLS
As of October 2026, Keystone Island No 5 in FL has 1 home for sale. As of October 2026, the MLS records 40 closed sales in Keystone Island No 5 in FL since 2012, the most recent in April 2026. Recorded prices since 2024 ran from $2,400,000 to $7,500,000 (median $3,399,000), on homes of 2,623 to 4,789 sq ft. At that median and Miami-Dade County's FY2025-26 rate of 17.59 mills, annual property tax runs about $59,800 ($59,090 with the full homestead exemption).
Keystone Island No 5 is pricing on a per-square-foot basis over $1,000, with a median close near $2.7M against just three closings in the current window. That is a thin sample, so treat any single sale here as a data point, not a trend line — the median moves fast when volume is this low.
A 13-day median days-on-market alongside that price point tells you demand is present and buyers are moving decisively once the right listing surfaces. For sellers, that argues for pricing to the recent comps rather than testing the ceiling; for buyers, it means well-priced, well-condition listings are not sitting long enough to negotiate from a position of leverage.
The 60-Second Overview
Keystone Island No 5 is a low-volume waterfront-adjacent Miami-Dade community where price per square foot runs well above $1,000 and the market moves on a small number of closings at a time, so each transaction carries outsized weight in reading value.
MIAMI REALTORS sales records identify 169 homes in KEYSTONE ISLAND that have changed hands since 2007, built between 1950 and 2025 (median 1959), with a median living area of about 2,956 sq ft and a typical 4-bedroom, 3-bath layout; 100% are single-family homes. Source: MIAMI REALTORS closed-sale history compiled by Momentum Research; counts reflect homes with a recorded MLS sale, not every home in the community.
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 Keystone Island is best for.
Best for
- Buyers with a budget aligned to a median near $2.7M who are comfortable transacting in a low-inventory environment
- Sellers with a property in strong, updated condition who want to test pricing power in a fast-moving, low-comp market
- Buyers or sellers who want a broker actively tracking closing activity rather than relying on a stale median alone
Probably not for
- Buyers who need a wide selection of active listings to compare before deciding
- Anyone requiring extensive recent comp history to validate a price before making an offer
- Buyers working with a budget well below the current per-square-foot pricing in this community
The market around Keystone Island
Keystone Island is too small for its own price trend, so here is the market around it.
In ZIP 33181, 291 homes are on the market and 10% are under contract — a slower corner of North Miami.
Across Miami-Dade County, 15,314 homes are active and 3,367 pending (18% under contract).
In ZIP 33181, 165 homes closed in the last 12 months at a median of $370K ($286/sq ft), up 2.0% year over year, with a median 86 days on market. Right now 173 active and 18 pending listings — a soft market. See the live ZIP 33181 housing market and the Miami-Dade County market.
ZIP and county figures describe the wider market, not Keystone Island specifically. Momentum Research analysis of MLS records.
Homes For Sale Right Now in Keystone Island
Live MLS inventory for Keystone Island. Every active listing, what is under contract right now, and the last 12 months of closed sales, refreshed twice a day. Closed comps beat an algorithm's guess every time.
Active and pending Keystone Island listings as of 2026-09-23, priced high to low. Based on information from the Southeast Florida Multiple Listing Service (SEFMLS) or from MIAMI Association of REALTORS(R) for the period 2012 through 2026. Tap any home to ask about it.
Every Home for Sale in Keystone Island No 5 Right Now (1)
All 1 active and pending Keystone Island No 5 listings with a detail page, newest first, refreshed twice a day from the MLS.
- 13305 Biscayne Island Ter · $4,199,000 · 4 bd / 3 ba · listed Jul 2, 2026 · listed by Beachfront Realty Inc
The Keystone Island buying strategy.
If we were buying in Keystone Island 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 Keystone Island.
Reading a thin market correctly
With only three closings in the current window, Keystone Island No 5 does not behave like a high-volume subdivision where comps stack neatly. The median price of $2,700,000 and median price per square foot of $1,004.84 reflect whatever mix of lot, condition, and finish happened to trade recently — not a stable baseline you can extrapolate forward with confidence.
The 13-day median days-on-market is the more telling number here: it says that when a listing is priced and presented correctly, it does not linger. That combination — high price per square foot, fast absorption, low volume — usually points to a market where sellers hold pricing power but where buyers need to move quickly once they identify the right property, because there may not be a second one behind it for months.
The location and the amenities are priced into every listing in Keystone Island. The deal is won or lost on condition, the comps, and the renovation math.
Why work with Momentum here
In a market with this few closings, the comps that matter are often not the ones on the public record yet, and pricing a listing — or evaluating an offer — requires knowing the recent transaction detail behind the median, not just the headline number. We track that closing activity as it happens and use it to keep both sellers and buyers grounded in what is actually trading, rather than what a thin dataset suggests on the surface.
Keystone Island 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 Keystone Island 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 Keystone Island sales matched to your home.
Price it to the comps and condition, not an automated estimate.
If you are thinking about selling in Keystone Island, the right list price comes from recent comparable sales matched to your home's condition and location, not an automated estimate.
What is your Keystone Island home worth?
Get a no-obligation home value based on real comparable sales in Keystone Island, 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 homes for sale in Keystone Island on the map →
Should you buy in Keystone Island?
An honest fit check. We will tell you when it is not your community.
Data sources & freshness
| Live listings | MIAMI MLS, refreshed twice daily (last: September 23, 2026) |
| Under-contract shares | MIAMI MLS records, as of 2026-09-20 |
| Historical depth | Closed-sale records back to 2012 (40 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 MIAMI 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 MIAMI 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 KEYSTONE ISLAND NO 5 fits the bigger picture — live prices, inventory, and Momentum Scores:
Common questions about Keystone Island
Where is Keystone Island?
Keystone Island is a community in Miami-Dade County, Florida, ZIP 33181.
Are there homes for sale in Keystone Island right now?
Yes — 1 active and 0 pending listings as of the last feed refresh (twice daily). They are listed on this page.
Does Keystone Island have an HOA or CDD?
No HOA is on record for Keystone Island 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.
More on Keystone Island
- Home values · What homes in Keystone Island actually sell for
Nearby Communities
Explore more neighborhoods near Keystone Island with Momentum Realty’s local guides.
The real cost & risk here
Before the list price, the Florida math the portals skip. These are Miami-Dade 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 · Miami-Dade 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.