Mashta Island
Homes for Sale in Key Biscayne, FL
True comps, carrying-cost math, and listings before the portals.
Photo via MIAMI MLS
Mashta Island shows almost no transaction volume in the current snapshot, which means there is not enough closed activity right now to draw a reliable read on pricing or pace. That thinness is itself the headline: this is a market where you negotiate off comparable evidence you assemble deal by deal, not off a running average.
For a seller, low turnover can work in your favor if you are patient and your home is genuinely distinct, but it also means you cannot lean on a recent-sales narrative to justify a number. For a buyer, it means doing homework beyond the MLS snapshot, because the public data here will not tell you much on its own.
The 60-Second Overview
Mashta Island sits within Miami-Dade County, and current MLS data reflects very limited recent closing activity, which limits what can be said about pricing trends here 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 Mashta Island is best for.
Best for
- A buyer willing to do independent diligence rather than lean on market averages
- A seller prepared to price based on property-specific merit rather than recent comps
- Someone comfortable with a longer, more deliberate transaction timeline
Probably not for
- A buyer who wants a large set of recent comparable sales before making an offer
- A seller expecting a fast, high-volume market to move a listing quickly
- Anyone relying solely on listed amenities to define the community
The market around Mashta Island
Mashta Island is too small for its own price trend, so here is the market around it.
Across Miami-Dade County, 60 homes are active and 15 pending (20% under contract).
Homes here are singlefamilyresidence.
ZIP and county figures describe the wider market, not Mashta Island specifically. Momentum Research analysis of MLS records.
Homes For Sale Right Now in Mashta Island
Live MLS inventory for Mashta 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 Mashta Island listings as of 2026-09-02, 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.
The Mashta Island buying strategy.
If we were buying in Mashta 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 Mashta Island.
A market with thin data
With only a single closing captured in this window, Mashta Island does not offer the kind of transaction volume that supports a confident pricing narrative. Any claim about value here should be treated as provisional until more closings accumulate.
No community amenities are currently identified from active MLS listings, which does not necessarily mean none exist, only that they are not being surfaced through listing data at this time. Buyers and sellers should verify amenities and any association details directly rather than relying on the feed.
The location and the amenities are priced into every listing in Mashta Island. The deal is won or lost on condition, the comps, and the renovation math.
Why work with Momentum here
In a market this thin on public data, the value of local representation goes up, not down. We track off-market context, recent activity that has not yet closed, and property-level detail that a standard search will not surface, so you are not pricing or negotiating blind.
Mashta 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 Mashta 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 Mashta Island sales matched to your home.
Price it to the comps and condition, not an automated estimate.
If you are thinking about selling in Mashta 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 Mashta Island home worth?
Get a no-obligation home value based on real comparable sales in Mashta 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 Mashta Island on the map →
Frequently Asked Questions
Do cash buyers compete in Mashta Island?
Who is the best real estate agent for Mashta Island?
How do I find a top Key Biscayne real estate agent who knows Mashta Island?
Can Momentum Realty connect me with an agent for Mashta Island?
Should you buy in Mashta Island?
An honest fit check. We will tell you when it is not your community.
Data sources & freshness
| Under-contract shares | MIAMI MLS records, as of 2026-07-18 |
| Historical depth | Closed-sale records back to 2012 (20 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 your area comps.
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