Key Marco
Homes for Sale in Marco Island, FL
All 277 homes for sale in Marco Island, FL · median $649,999 · 441 homes for sale in 34145 · Collier County homes for sale
True comps, carrying-cost math, and listings before the portals.
Photo via Florida Gulf Coast MLS
As of November 2026, Key Marco in Marco Island, FL has 2 homes for sale. Key Marco is a community in Marco Island, Collier County, FL. Across Marco Island as a whole, 104 homes closed in the last 12 months at a median of $800,000, 98 median days on market. At that median and Collier County's FY2025-26 rate of 11.05 mills, annual property tax runs about $8,840 ($8,410 with the full homestead exemption).
Last 30 days in Key Marco: 1 new listing (median asking $9,750,000). As of November 11, 2026, Listing information provided by the Florida Gulf Coast Multiple Listing Service, Inc. Information is deemed reliable but not guaranteed by the MLS to be accurate.
Key Marco is a small, low-volume pocket on Marco Island: the current MLS snapshot shows just 40 homes in the dataset, so any single closing or new listing can shift the read on the community. Construction spans 1995 through 2024, with a median build year of 2005, meaning the housing stock is not uniform — some owners are working with original-era construction, others with recent builds, and that spread alone accounts for a lot of the variation you will see in list prices and condition.
The homestead share sits at roughly 23.9%, which tells you a meaningful portion of ownership here is not filed as a primary residence. That matters for how you approach negotiation and timing — non-homestead ownership often means more flexibility on the seller side around scheduling, terms, and how a property is priced relative to comparable primary-residence sales elsewhere on the island.
Figures in this note are as of July 29, 2026. The live market numbers elsewhere on this page update nightly and are newer.
The 60-Second Overview
Key Marco is a compact, low-inventory segment of the Marco Island market defined more by build era and lot scale than by any shared amenity package — no community amenities are identified from current MLS listings, so whatever draws a buyer here is the home and site itself, not a clubhouse or gate.
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 Key Marco is best for.
Best for
- A buyer prioritizing a large home footprint and willing to evaluate each property's build year and condition individually.
- A buyer comfortable purchasing where community amenities are not part of the package and value is tied to the structure and lot.
- A buyer working with a longer search timeline given how few homes are active in this segment at any point.
Probably not for
- A buyer who wants a clubhouse, shared pool, or organized amenity program as part of the purchase.
- A buyer who needs a large pool of comparable sales to benchmark price with confidence.
- A buyer set on new construction only — the build range here goes back to 1995, and older inventory is part of the mix.
The market around Key Marco
Key Marco is too small for its own price trend, so here is the market around it.
Across Collier County, 5,183 homes are active and 932 pending (15% under contract).
ZIP and county figures describe the wider market, not Key Marco specifically. Momentum Research analysis of MLS records.
Homes For Sale Right Now in Key Marco
Live MLS inventory for Key Marco. 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 Key Marco listings as of 2026-11-11, priced high to low. Listing information provided by the Florida Gulf Coast Multiple Listing Service, Inc. Information is deemed reliable but not guaranteed by the MLS to be accurate. Tap any home to ask about it.
The Key Marco buying strategy.
If we were buying in Key Marco 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 Key Marco.
A market of individual homes, not a packaged community
With a median living square footage figure of 11,526, the homes tracked in this dataset run large — this is not a starter-home segment, and buyers should expect the physical scale of the property itself, rather than shared community infrastructure, to be the main value driver. Because MLS records show no identified community amenities, whatever pool, dock, or outdoor space exists is typically private to the lot rather than shared.
The 1995–2024 build range means due diligence has to be done property by property. A home built in the late 1990s and one finished in the past few years can sit on comparable lots but carry very different mechanical systems, storm mitigation, and finish quality — buyers should not assume uniformity just because the address says Key Marco.
The location and the amenities are priced into every listing in Key Marco. The deal is won or lost on condition, the comps, and the renovation math.
Why work with Momentum here
In a segment this small — 40 homes in the current dataset — pricing precedent is thin and easy to misread from a single comparable. We track build year, square footage, and ownership status (homestead versus non-homestead) property by property so you are negotiating from an accurate picture of this specific pocket of Marco Island, not a generalized island-wide average.
Key Marco in 15 seconds.
Tools for a Key Marco 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 Key Marco sales matched to your home.
Price it to the comps and condition, not an automated estimate.
If you are thinking about selling in Key Marco, the right list price comes from recent comparable sales matched to your home's condition and location, not an automated estimate.
What is your Key Marco home worth?
Get a no-obligation home value based on real comparable sales in Key Marco, 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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Should you buy in Key Marco?
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Data sources & freshness
| Live listings | Florida Gulf Coast MLS, refreshed twice daily (last: November 11, 2026) |
| Under-contract shares | Florida Gulf Coast MLS records, as of 2026-11-11 |
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.
Recent Developments in Key Marco
Development, infrastructure, retail, and school activity affecting Key Marco, tracked by our team and summarized from public reporting and official sources, with links to the original coverage. Last updated November 2026.
- October 2026Infrastructure
American Airlines to resume Naples flights with twice-daily Charlotte service
The Naples Airport Authority approved an operating agreement on Oct. 15 for nonstop CRJ-700 flights to Charlotte starting Dec. 2. Flights will use the North Road Terminal now being renovated, and the airport expects about $650,000 in annual revenue. The airport's last commercial flight was in 2017.
What it may mean for the marketScheduled commercial service returns to Naples, shortening travel for residents and visitors connecting through Charlotte. The site is about 3 miles west of Key Marco.
Source: Gulfshore Business - October 2026Infrastructure
Naples begins $8M beach renourishment with 208,000 tons of sand
Sand placement started the week of Oct. 26 along about 3.5 miles of shoreline from Doctors Pass to south of 21st Avenue. Roughly 9,450 truck trips will deliver the sand, with work expected to finish by Christmas. The beach stays open, with sections temporarily closed as crews work.
What it may mean for the marketExpect truck traffic at beach access points and short-term section closures through December, followed by a wider beach and added storm buffering for nearby streets. The site is about 5 miles west of Key Marco.
Source: WINK News - October 2026Retail & Dining
Paragon Theaters to open 11-screen cinema at Mercato in North Naples
Mercato's leasing agent announced on Oct. 21 that Paragon Theaters signed a lease for about 33,700 square feet on the second floor, formerly home to Alamo Drafthouse and Silverspot. The cinema is expected to open in early 2027 with premium large-format screens and in-seat dining. Paragon will keep its Pavilion location on U.S. 41 North.
What it may mean for the marketRefills a vacant entertainment space at Mercato and restores a movie option within the North Naples retail district. The project is about 9 miles northwest of Key Marco, elsewhere in Collier County.
Source: Gulfshore Business - September 2026Retail & Dining
Whole Foods confirmed as anchor of 82-acre Vitano mixed-use project in East Naples
Vitano, an 82-acre master planned development at Davis and Santa Barbara boulevards, plans 86,904 sq ft of retail including a 31,995 sq ft Whole Foods, plus 200 townhomes and 422 apartments. The PUD amendment is under county review. The developer hopes to break ground in 2027.
What it may mean for the marketWould add grocery and dining options and several hundred rental and townhome units in East Naples, with retail opening roughly 20 months after construction starts. The site is about 3 miles southwest of Key Marco.
Source: Gulfshore Business - August 2026Schools
Diocese of Venice shows plans for church and K-12 school in Golden Gate Estates
The Diocese of Venice presented plans on 41 acres at Immokalee Road and Wilson Boulevard for a 1,250-seat church and a 200,000 sq ft K-12 school for up to 1,000 students. A land use amendment is required and construction follows a three-year capital campaign, with the school built first.
What it may mean for the marketWould add private school capacity and a community facility in the Immokalee Road growth area, several years out. The project is about 15 miles northeast of Key Marco, elsewhere in Collier County.
Source: Gulfshore Business - May 2026Civic
Collier County weighs buying East Naples grove site planned for 423 homes
Collier County commissioners voted on May 13, 2026 to pursue appraisals and negotiations to potentially buy the 166.63-acre former South Naples Citrus Grove at 341 Sabal Palm Road using Conservation Collier funds, rather than advance a proposed 423-home development. The board authorized preliminary assessments estimated at a few thousand dollars for appraisal and environmental review. The grove had become unproductive due to citrus greening disease.
What it may mean for the marketA potential public conservation purchase would remove a large parcel from the housing pipeline and steer its future toward preserved open land. The project is about 6 miles southeast of Key Marco, elsewhere in Collier County.
Source: Gulfshore Business
Summaries reflect public reporting and official sources linked above as of the dates shown. Project details, timelines, and approvals can change. Commentary on potential market effects is general observation, not investment advice or a prediction for any specific property. For the freshest items across the whole region, see This Week in Northeast Florida.
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