100 Tingler Lane, Marathon, FL 33050
Sources: Florida Keys MLS (listings + 12-mo closed sales), FEMA, modeled insurance. Interpretation: Momentum Research. Data notes
As of September 12, 2026, 100 Tingler Lane in Tinglers Island (49.5), Marathon is listed at $8,299,999. That is 440% above Tinglers Island (49.5)'s median closed sale of $1,537,500 over the last 12 months (32 recorded sales). It has been 152 days on market, longer than the community's typical 91 days to contract. Listing facts: built in 1980, a private pool, waterfront, no HOA. The parcel maps to FEMA flood zone VE, a special flood hazard area where lenders generally require flood insurance. Figures are from the MLS record and county data; deemed reliable but not guaranteed.
- No CDD assessment on record
- Built 1980 · 46 yrs
- Garage
- 152 days on market
- HOA ~$50/mo (estimate; confirm)
Pricing & the Sugarloaf Shores (17.0) market
How this home is priced against recent nearby sales, and where Sugarloaf Shores (17.0) has been over 25 years. Momentum Research analysis of Florida Keys MLS records; closed sales, deemed reliable but not guaranteed. Estimates only; see data notes.
Median sale price by year
12-month median closed price, 2012–2026.
Market Heat by year (0–100)
Momentum Market Heat, 2013–2026. Now 36 (cold).
This home’s history
- 1980BuiltPer public record
- Aug 4, 2026First trackedObserved at $8,299,999
- NowActiveCurrently for sale
Build year is from public record. Listing milestones reflect movewithmomentum.com’s own observations since we began tracking this listing and are not the MLS listing history; dates and prices are deemed reliable but not guaranteed.
Estimated monthly payment
- Principal & interest $43,111/mo 78%
- Taxes $7,262/mo 13%
- Insurance $4,503/mo 8%
- HOA $50/mo 0%
$54,926/mo at 20% down, 30-yr @ 6.76% · edit any field to update.
Editable estimate — not a loan offer. Estimates only; see data & estimate notes.
Momentum Property Score
34/100 is limited across the objective indicators below. It reflects only those measures — not the home’s quality, condition, or desirability.
A 0-100 score built from objective property and market data: flood risk, insurance, pricing, supply, affordability, and recent sales. Higher means more measures line up in a buyer’s favor. It reflects only the factors below.
Momentum Scores are objective, rules-based indicators computed from listing facts, public records, and recent nearby sales. They are not appraisals, valuations, investment advice, or judgments about a neighborhood or who should live there. Verify independently.
The Momentum read
Recent Sugarloaf Shores (17.0) sales closed near 91.6% of original asking.Why it matters: the community’s own record shows how far opening prices typically move, and how often buyers compete without financing.Momentum Research analysis of Florida Keys MLS records, community-level, 12 months ending September 12, 2026. Aggregates only; deemed reliable but not guaranteed.
What’s unique here: one of only 1175 active listings in Sugarloaf Shores (17.0), no CDD assessment.
Jump to: About this home · Every number, sourced · Monthly cost · Flood & risk · History · FAQ
Updated September 12, 2026 · MLS facts carry their source; interpretation lines are Momentum Research · Data sources & freshness
About this home
Tucked on the private shores and gated community of Tingler Island, this one-of-a-kind dual-waterfront estate is where the Florida Keys lifestyle reaches its fullest expression. Design/Build by D'Asign Source, meet Bella Vista, a coastal-modern renovation. Experience the ultimate coastal dichotomy: wake to the breathtaking panorama of the Atlantic Ocean, while enjoying the calm, effortless convenience of protected canal-front docking.
A rare luxury configuration w/ Main Home on the Open Atlantic Ocean to Guest Home on Canal Frontage. Spend your mornings fishing, afternoons floating in your multi-level infinity pool as it disappears into the ocean horizon & evenings gathered around the gas fire pit beneath swaying palms & stars. The 8' wide by 107' concrete dock accommodates two boat lifts (3,000 & 17,000 lbs) w/ water, electric, & lighting along the full seawall, everything a serious boater needs.
The single-bedroom Main Home stuns w/ soaring 18-ft vaulted ceilings, exposed wood beams, & a wall of six floor-to-ceiling glass panels that open to frame the Atlantic as your daily backdrop. The gourmet kitchen features Sub-Zero & Wolf appliances, a Miele coffee system, a 10-ft island, Brittanica quartz countertops, & a temperature-controlled glass wine wall. A sea-inspired chandelier, custom wall paneling & thoughtful finishes flow throughout.
The expansive Primary Suite anchors the home w/ ocean views, a floating soaking tub, glass rain shower, dual sinks, & a built-in home office tucked into the layout. The private Guest Home above the double garage offers 2 beds, 2 baths, a kitchenette, private balcony, & its own washer/dryer-ideal for guests or family. Outside, resort-style grounds include a gazebo w/ marble dining table, outdoor kitchen w/ Lynx premium grill & fridge, beach sand, fruit garden, Tuuci marine-grade parasols, tiki torches, Coastal Source audio, 1,000 gallon gas tank & full home generator.
Bella Vista isn't just a home, it's your Keys life, fully lived.
Description provided by Lokation Real Estate and reproduced from the MLS; not independently verified.
Every fact, sourced
Listing data, public records, our calculations, and what to verify — each fact shown once. Estimates and calculations shown are for general information only, are not appraisals or advice, and should be independently verified.
Listing facts MLS
Public records & third-party data
Calculated estimates
Buyer should verify Buyer verify
Similar homes for sale near Tinglers Island (49.5)
Active listings nearby at a comparable size and price. Listings held by brokerages other than Momentum Realty are marked with the listing broker. Deemed reliable but not guaranteed.
Price & listing history
Building permits
Flood zone & elevation
Sourced environmental data for the parcel. Confirm with FEMA and your insurer.
From the FEMA flood map. Lender-required flood insurance may apply; confirm for the parcel.
Approximate parcel elevation from USGS; confirm exact elevation with a survey.
This is a coastal Florida county. Premiums and coverage vary by home; obtain a quote from a licensed insurer.
Internet & broadband
AT&T Fiber covers much of NE Florida; confirm availability at the address.
Xfinity/Spectrum cable broadband is widely available.
T-Mobile / Verizon fixed-wireless as a backup option.
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Listed by Lokation Real Estate · MLS # 619460
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Recent sales activity in Tinglers Island (49.5)
Recent comparable closed sales near this home, from public records. Summary figures are for general reference only and are not a valuation of this property. See the Tinglers Island (49.5) neighborhood guide for more.
Recent nearby closings in the data set.
Canonical 12-month median closed price. Reference only.
Canonical 12-month median $/sq ft. Reference only.
Go deeper on Tinglers Island (49.5)
See schools, amenities, builders, HOA/CDD detail, and every active & sold home in the community — the single biggest advantage of buying here over a portal.
Assigned schools
Schools currently assigned to this address in Monroe County, provided as neutral factual data. Assignments can change — confirm current zoning with the school district. This is not a statement about the home's suitability for any person or family.
See schools in the Tinglers Island (49.5) guide → · Browse school-zone pages →
Comparable recent sales
Recent closed sales nearby, with photos, so you can compare. Sold prices are public record, deemed reliable but not guaranteed.
No closely comparable recent sales were found in this data set.
Investment snapshot
Objective rental and cash-flow estimates for a buyer weighing this as an investment. Rough figures for general information only — not a guarantee of rent, an appraisal, or investment advice. Verify independently.
Buyer research checklist
Items worth confirming for 100 Tingler Lane, chosen from what the record shows. This is general guidance, not advice about this specific property.
- Built in 1980 (46 years): ask for the roof and HVAC replacement dates — insurers commonly ask for roof age on homes this old, and it changes the premium.
- The listing reports no HOA: confirm with the county record that no deed restrictions or mandatory association apply to this parcel.
- FEMA flood zone VE: lenders generally require flood insurance here — get an elevation certificate and a flood quote before the inspection period ends.
- Get a homeowners insurance quote for this specific address in Monroe County; a wind-mitigation inspection and, on older homes, a four-point inspection can change the premium.
- Private pool: confirm the barrier or alarm meets the state residential pool safety code and ask for pump, heater, and resurfacing records.
- Waterfront: confirm seawall or dock condition and permits, and ask who owns and maintains the shoreline.
- Confirm square footage and room dimensions independently.
- Order a survey to confirm lot boundaries and easements.
- Review permit history with the county.
- Property taxes: the estimate on this page (about $87,150/yr) assumes reassessment at the list price; the seller's homestead cap does not transfer, so their current bill is not a guide.
- Confirm school zoning directly with the district.
Approximate distances
Approximate drive times for general reference only.
Groceries, dining, and parks for this city — see the city guide.
Schools, taxes, and services are county-administered — see the county guide.
View →Amenities and HOA/CDD detail on the neighborhood guide.
View →Data sources & freshness
| Listing record | Florida Keys MLS, refreshed twice daily (last: September 12, 2026) |
| Community market stats | Florida Keys MLS closed sales, as of September 12, 2026 |
| Flood zone & elevation | FEMA flood maps + USGS elevation (Zone VE shown above) |
| Taxes & monthly cost | Estimated from county rates; not a quote |
| Insurance figure | Modeled estimate; obtain a real quote before offering |
| Schools | 2025-26 district assignments; verify with the district |
Momentum Research lines are our own analysis of Florida Keys MLS records; MLS data is deemed reliable but not guaranteed. Estimates are informational, not appraisals or advice. Methodology: how Momentum scores are computed.
Frequently asked questions
How big is 100 Tingler Lane and when was it built?
Per the listing record, 100 Tingler Lane was built in 1980 and has 3 bedrooms and 3.5 bathrooms. Living area and lot size come from the MLS record and should be verified against the county property appraiser.
What community is 100 Tingler Lane in?
100 Tingler Lane is in Tinglers Island (49.5) in Marathon, Monroe County. The community section on this page shows recent closed sales, days on market, and active inventory for Tinglers Island (49.5) from the same MLS data.
Does 100 Tingler Lane have an HOA?
The listing reports no HOA. Confirm with the county record that no deed restrictions or mandatory association apply to the parcel.
Why might property taxes on 100 Tingler Lane differ from the current owner's?
The estimate on this page (about $87,150 per year) assumes reassessment at the list price. Florida's Save Our Homes rule caps annual assessment increases for homesteaded owners, and the assessment resets after a sale, so a new owner's bill may differ from the seller's. Any tax figure shown here is an estimate, not the actual bill — confirm with the county property appraiser and tax collector.
Is 100 Tingler Lane in a flood zone?
The FEMA flood map places this parcel in Zone VE, a special flood hazard area where lenders generally require flood insurance on a mortgaged purchase. Confirm the parcel's status with FEMA and your insurer, and ask for an elevation certificate.
Can I rely on the figures on this page?
No. Estimated taxes, insurance, payments, and any market or comparable-sales summary are opinions and estimates for general information only and should not be relied upon. Verify all information independently before making any decision.
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Opinion & estimate — do not rely on this page. Any figure on this page that is not a verbatim fact from the listing or a public record — including estimated property taxes, insurance, CDD/HOA amounts, mortgage payments, comparable-sales summaries, and market statistics — is an opinion and estimate provided for general informational purposes only. These figures may be inaccurate or out of date, are not appraisals, valuations, or financial, legal, tax, or investment advice, and should not be relied upon. Do not make any purchase, offer, financing, or other decision based on this page. Independently verify everything — price, square footage, lot size, year built, taxes, CDD/HOA, flood status, school assignments, permits, and community rules — with the listing broker, the county, your lender, a licensed inspector, an insurer, and your own advisors before acting.
Estimate methodology. Tax estimates apply a typical county millage rate to the list price and will differ from the actual assessed bill. Cost and market figures are derived from available data and simple calculations, not a professional appraisal. We make no representation that any estimate reflects fair market value.
Equal Housing Opportunity. Content on this page is compiled from public records, MLS data, and automated sources and may contain errors or be out of date. It is general information only, not a representation about any specific property, community, builder, or association. Verify information independently before relying on it. Momentum Realty supports the Fair Housing Act and does not discriminate on the basis of race, color, religion, sex, handicap, familial status, national origin, sexual orientation, or gender identity. Information about schools, distances, and amenities is provided as neutral factual data to help you research the property and is not a statement about who should or should not live here or the suitability of the home or neighborhood for any person or group. School data may change — confirm current assignments with the school district.
Found an error? If you are the owner, listing agent, or a party to this property and believe any information is inaccurate, email and we will review and correct or remove it promptly.
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MLS / IDX. The data relating to real estate for sale on this web site comes in part from the Internet Data Exchange (IDX) program of the Florida Keys MLS, Inc. Internet Data Exchange. Real estate listings held by brokerage firms other than Momentum Realty are marked with the listing broker's name and include the name of the listing agent. Data provided is deemed reliable but is not guaranteed by the MLS to be accurate. The information being provided is for consumers' personal, non-commercial use and may not be used for any purpose other than to identify prospective properties consumers may be interested in purchasing. Source: Florida Keys MLS, Inc.. © 2026 Florida Keys MLS, Inc. All rights reserved.
Listing data is deemed reliable but is not guaranteed and is subject to change or withdrawal without notice. Square footage and lot size are approximate. Real estate brokerage services provided by Momentum Realty, licensed in Florida and Georgia. © 2026 Move With Momentum LLC.