9 Sebastian Avenue #B, St. Augustine, FL 32084
Sources: realMLS (listings + 12-mo closed sales), FEMA, modeled insurance. Interpretation: Momentum Research. Data notes
9 SEBASTIAN Avenue #B in Garnett Addition, St. Augustine is listed at $859,000 (1,750 sq ft, about $491 per sq ft). It has been listed Oct 8, 2026. Listing facts: new construction, a private pool, no HOA. The parcel maps to FEMA flood zone AE, 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
- New construction — built 2026
- 1,750 sq ft of living area
- 1-car garage
- Listed at $859,000 — recent neighborhood median sale price ~$402,500 (nearby sales; deemed reliable, not an appraisal)
- listed Oct 8, 2026
- No HOA reported by the listing (confirm)
About this home
With a location in the heart of Historic Downtown St. Augustine and only minutes to Vilano Beach, the Homes of 7 Sebastian Avenue effortlessly blend sophisticated design and luxury living. Developed by Ocean Life Homes, this exclusive four unit townhouse development is designed to comfortably accommodate those looking for low maintenance and a permanent residence, second home, or profitable investment opportunity.
Boasts a spacious two story, three bedroom, two and a half bath floor plan with a one car garage, and private 7x12 in ground heated pool. Interior finishings have been artfully curated to ensure only the highest quality products are utilized throughout each home. Outside, xeriscaping will be implemented to achieve minimal water usage with little to no irrigation required.
This is a rare opportunity to own a new luxury townhome with its own private pool, surrounded by shopping, dining, and walking distance to historic attractions in the epicenter of the Nation's Oldest City.
All 44 photos
Description provided by ONE SOTHEBY'S INTERNATIONAL REALTY 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
Estimated monthly payment
- Principal & interest $4,721/mo 85%
- Taxes $616/mo 11%
- Insurance $226/mo 4%
$5,562/mo at 20% down, 30-yr @ 7.32% · edit any field to update.
Editable estimate — not a loan offer. Estimates only; see data & estimate notes.
What it really costs to own 9 Sebastian Avenue #B
The parts of the monthly number a mortgage calculator leaves out, from this listing's MLS record, the county tax roll, Citizens and FEMA. Property facts only.
| Property tax | Buy at the asking price of $859,000 and the first-year bill resets to about $11,050/yr (St. Johns County total millage 13.4686 with homestead, FY2025-26); Save Our Homes caps later increases at 3%/yr. |
|---|---|
| HOA dues | The listing states there is no HOA. |
| Home and flood insurance | The average Citizens Property Insurance premium in Saint Johns County is $1,378/yr (977 policies, Citizens detail by county, April 2026); private-market quotes differ by roof age, wind mitigation and distance to the coast. The page's modeled range for this home is $2,000–$4,000/yr; neither is a quote. Flood: this address maps to FEMA zone AE, a high-risk zone where flood insurance is required with a federally backed mortgage. Statewide, a zone A/AE/VE flood policy runs about $1,200–$2,500/yr (FEMA Risk Rating 2.0 averages, not a quote). |
| Roof and age | Built in 2026. A newer roof and current wind-mitigation features usually mean the lower end of insurance quotes; ask for the wind-mitigation form. |
Estimated carrying cost at the asking price, before the mortgage: about $1,036/month (tax $921, insurance $115). An estimate from the sources above, not a quote; the monthly-cost calculator on this page adds the loan.
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.
St. Johns County is on the Florida coast; wind coverage is a major part of the premium. Premiums and coverage vary by home (roof age, wind mitigation, claims history); obtain a quote from a licensed insurer.
Natural hazard risk
FEMA National Risk Index for St. Johns County, FL: overall Relatively Moderate. Ratings compare this county with every county in the United States for expected annual loss from each hazard.
Source: FEMA National Risk Index (county level, hazard risk ratings only). Ratings describe the county, not this parcel; the flood zone shown above is parcel-specific. Verify insurance requirements with your lender and agent.
Internet & broadband
Address-level fiber service is not confirmed for this home. Check the FCC National Broadband Map (broadbandmap.fcc.gov) or the provider for this address.
Cable broadband is common in Florida and Georgia towns but not confirmed for this address; verify with the provider.
5G home internet and satellite service depend on the exact location; check coverage for this address.
Pricing & the Garnett Addition market
How this home is priced against recent nearby sales, and where Garnett Addition has been over 25 years. Momentum Research analysis of realMLS records; closed sales, deemed reliable but not guaranteed. Estimates only; see data notes.
This home’s $/sq ft vs. nearby sales
List $/sq ft against recent nearby closed sales; the community median is marked.
This home’s history
- 2026BuiltPer public record
- About Oct 2026Listed (per MLS)Approximate list date from the MLS cumulative days-on-market count (<span class="mw-dom" data-listed="2026-10-08" data-fmt="dom">listed Oct 8, 2026</span>)
- Oct 7, 2026First seen on movewithmomentum.comObserved at $859,000
- NowActiveCurrently for sale
Build year is from public record. The MLS list date is approximate (today minus the cumulative days on market the MLS reports, which can span relistings). Other 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.
Price & listing history
Building permits
Comparable recent sales
6 closed sales within about 3 miles in the last 18 months — same property type, living area within 30% of this home. Sold prices are MLS closed-sale records, deemed reliable but not guaranteed.
Median of these 6 sales: $402,500 ($212/sq ft). Stronger local evidence. Shown for general reference only — not an appraisal or a statement of this home’s value.
The Messtimate
Our automated estimate of the likely sale-price range for this home — modeled from recent closed sales nearby adjusted to today's market, a local size-and-age model, and the county tax roll. It is an estimate, not an appraisal, not market value, and not an offer. A licensed agent's CMA sees the condition, the lot, and the live market that a model can't.
Directional estimate — built from 10 comparable closed sales within about 3 miles (same property type, closed within the last 18 months, each adjusted to today's market).
Track record: across 2,976 recent closed sales we scored, the closed price landed inside the Messtimate range 57% of the time; median miss 9.3% (closed sales statewide, FL + GA feeds that permit an automated estimate). Re-scored weekly; last 2026-10-24.
Actual list price: $859,000 ($491/sq ft) — the seller's asking price is not an input to this range; compare the two.
A 50% spread on the same house — here is what a model can't see:
- Condition & finishes — as new construction, builder upgrades and finish level aren't in the model.
- The lot & views — a premium golf, water, or preserve lot vs. a road-facing one.
- The pool — a private pool carries cost and value the model only sees through the comps.
- Carrying costs & concessions — insurance, CDD/HOA and seller-paid buydowns change what a buyer actually pays.
And what the live market is doing right now:
- 3 active listings competing
- ≈12.0 months of supply
- 2 closed here in the last 12 months
Selling your own home? Try the Messtimate on your address →
Methodology: 20th–80th percentile band combining time-adjusted $/sq ft of comparable closed sales (10); MLS closed-sale records. Automated valuation model output for general information only — not an appraisal, not market value, not an offer, and not reviewed by a licensed appraiser. Updated October 28, 2026.
Momentum Property Score
25/100 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.
Coverage: 5 of 8 indicators had valid data for this home; indicators without data are left out, not scored as zero. Momentum Scores are objective, rules-based indicators computed from listing facts, public records, and recent comparable sales. They do not measure property condition, quality, or investment suitability, and they are not appraisals, valuations, investment advice, or judgments about a neighborhood or who should live there. Verify independently.
The Momentum read
🟢 Buyer-leaning conditions around this listing. 12.0 months of supply in the surrounding market and 20 days on market for this home, against a 20-day area median.Days on market:this home 20Area median: 20 daysWhy it matters: above-median time on market, together with the level of supply, is a clear sign of how much leverage sits with buyers.Momentum Research interpretation of the MLS facts in the snapshot above. Source: Data provided by realMLS. As of October 27, 2026.
🟡 Asking $491 per square foot, about 132% above the community’s $212 median. Garnett Addition’s 12-month median sold price per square foot is $212. MLS facts: realMLS closed sales. A per-square-foot gap is context, not an appraisal; condition, lot, and view set the final number here.
What’s unique here: one of only 2 active listings in Garnett Addition, no CDD assessment.
Jump to: About this home · Every number, sourced · Monthly cost · Flood & risk · History · FAQ
Checked against the MLS October 28, 2026 · MLS facts carry their source; interpretation lines are Momentum Research · Data sources & freshness
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Listed by ONE SOTHEBY'S INTERNATIONAL REALTY · MLS # 2168310
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Similar homes for sale near Garnett Addition
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.
Newest listings in St. Augustine
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- 667 Scrub Jay Drive, St. Augustine · $229,000 · 2 bd / 2.5 ba · listed October 28, 2026 (courtesy of FLORIDA HOMES REALTY & MTG LLC)
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Recently off market in Garnett Addition
- 7 Sebastian Avenue #D · last listed $869,000 · 2026-10-08
- 7 Sebastian Avenue #C · last listed $859,000 · 2026-10-08
- 21 Sanchez Avenue · last listed $505,000 · 2026-09-12
Just listed: new homes for sale in Northeast Florida in the last 48 hours · updated hourly · RSS · Northeast Florida market today: new listings, price cuts, pendings
More on Garnett Addition
Go deeper on Garnett Addition
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 St. Johns 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 Garnett Addition guide → · Browse school-zone pages →
City, county & community guides
Where this home sits, with links to the matching guides. General reference only.
Buyer research checklist
Items worth confirming for 9 SEBASTIAN Avenue #B, chosen from what the record shows. This is general guidance, not advice about this specific property.
- New construction: get the builder's warranty terms and the certificate of occupancy in writing, and ask which finishes shown are upgrades.
- The listing reports no HOA: confirm with the county record that no deed restrictions or mandatory association apply to this parcel.
- FEMA flood zone AE: 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 St. Johns 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.
- Listed living area is 1,750 sq ft: verify it against the property appraiser's record and measure before relying on it.
- Order a survey to confirm lot boundaries and easements.
- Review permit history with the county.
- Property taxes: the estimate on this page (about $7,387/yr) assumes reassessment at the list price; the seller's current bill is not a guide Exemptions and portability change the actual bill — confirm with the county property appraiser.
- Confirm school zoning directly with the district.
Data sources & freshness
| Listing record | realMLS, checked against the MLS hourly (last: October 28, 2026) |
| Comparable sales | realMLS closed sales within about 3 miles, last 18 months, as of October 27, 2026 |
| Flood zone & elevation | FEMA flood maps + USGS elevation (Zone AE shown above) |
| Taxes & monthly cost | Typical county effective rate applied to the list price; an estimate, not a bill |
| 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 realMLS 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 9 SEBASTIAN Avenue #B and when was it built?
Per the listing record, 9 SEBASTIAN Avenue #B was built in 2026 and has 1,750 sq ft of living area, 3 bedrooms and 2.5 bathrooms. Living area and lot size come from the MLS record and should be verified against the county property appraiser.
What community is 9 SEBASTIAN Avenue #B in?
9 SEBASTIAN Avenue #B is in Garnett Addition in St. Augustine, St. Johns County. The comparable-sales section on this page shows recent closed sales nearby from the same MLS data.
Does 9 SEBASTIAN Avenue #B 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 9 SEBASTIAN Avenue #B differ from the current owner's?
The estimate on this page (about $7,387 per year) assumes reassessment at the list price less the homestead exemption. Florida reassesses a home after it sells; for a homesteaded seller the Save Our Homes cap on their assessment does not transfer, and a buyer's own exemptions and portability are applied separately, so the two bills usually differ. Any tax figure shown here is an estimate, not the actual bill — confirm with the county property appraiser and tax collector.
Is 9 SEBASTIAN Avenue #B in a flood zone?
The FEMA flood map places this parcel in Zone AE, 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.
See 9 SEBASTIAN Avenue #B in person
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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 county millage to the list price (less the homestead exemption where the parcel is matched to the certified roll) 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 jon@movewithmomentum.com 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 Northeast Florida Multiple Listing Service, Inc. Real estate listings held by brokerage firms other than Momentum Realty are marked with the listing broker's name, and detailed information about such listings includes the name of the listing broker. Data provided is deemed reliable but is not guaranteed. 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: realMLS (Northeast Florida Multiple Listing Service). © 2026 Northeast Florida Multiple Listing Service, 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. Florida real estate brokerage services provided by EAB RE Investments LLC dba Momentum Realty. Georgia real estate brokerage services provided by Momentum Realty LLC. Site designed by Move With Momentum LLC, © 2026.