687 Sandstone Drive, St. Augustine, FL 32086
Sources: realMLS (listings + 12-mo closed sales), FEMA, modeled insurance. Interpretation: Momentum Research. Data notes
As of October 13, 2026, 687 SANDSTONE Drive in Treaty Oaks, St. Augustine is listed at $419,000 (1,816 sq ft, about $231 per sq ft). That sits within a few percent of Treaty Oaks's median closed sale of $445,000 over the last 12 months (9 recorded sales). Per square foot it is above the community's recent $201/sq ft by about 15%. It has been 21 days on market. Listing facts: built in 2019, HOA dues of $64/mo. Figures are from the MLS record and county data; deemed reliable but not guaranteed.
- No CDD assessment on record
- Built 2019 · 7 yrs
- 1,816 sq ft of living area
- 2-car garage
- Listed at $419,000 — recent neighborhood median sale price ~$445,000 (nearby sales; deemed reliable, not an appraisal)
- 21 days on market
- HOA $64/mo (per listing)
About this home
Taking back up offers only. Welcome to this charming 4-bedroom, 2-bath single-story home in highly desirable Treaty Oaks in historic St. Augustine.
The open-concept layout features wood-look porcelain tile throughout the main living areas and a spacious kitchen with quartz countertops, a large center island and seamless flow into the dining and living areas. Both bathrooms also feature quartz countertops. Enjoy a fully fenced waterfront backyard with a pavered walkway to a custom fire pit overlooking the pond, plus plenty of room for a pool!
Walk to the resort-style pool, fitness center & clubhouse, with Treaty Park nearby offering pickleball, basketball & a skate park. NO CDD fees & reasonable HOA fees!
All 44 photos
Description provided by ERA ONETEAM 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 $2,321/mo 79%
- Taxes $415/mo 14%
- Insurance $130/mo 4%
- HOA $64/mo 2%
$2,930/mo at 20% down, 30-yr @ 7.4% · edit any field to update.
Editable estimate — not a loan offer. Estimates only; see data & estimate notes.
Property taxes
✓ Certified county tax rollProperty taxes in Florida are reassessed after a sale, so a buyer’s first full-year bill can be higher than the seller’s. Budget from this estimate, not the current bill, before you make an offer.
Most of this comes from Florida’s Save Our Homes assessment cap resetting when the home sells — the current owner’s protected assessment does not transfer to a new buyer.
Certified 2025 tax roll values for this parcel (Florida DOR). The roll gives values, not the bill; the current owner’s bill above is estimated from the taxable value.
Estimate my property taxes →Adjust for your exemptions, portability, and down payment
Sources: Florida DOR certified tax roll (2025), realMLS; millage: St. Johns County Property Appraiser, FY2025-26 adopted budget. County public record, not MLS data — matched to this home by parcel ID. Estimates are not a tax bill; the county property appraiser and tax collector set the actual amount.
Flood zone & elevation
Sourced environmental data for the parcel. Confirm with FEMA and your insurer.
Not yet verified for this address. Look up the parcel at msc.fema.gov before relying on any flood assumption.
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 Treaty Oaks market
How this home is priced against recent nearby sales, and where Treaty Oaks 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.
Price vs. size in Treaty Oaks
Each dot is a closed sale since 2016 (165 total). This home is the gold marker.
Sale price (y) by living area in sq ft (x). realMLS closed sales.
Median $/sq ft by year
Community sold $/sq ft, 2017–2026. This home lists at $231/sq ft.
Median sale price by year
12-month median closed price, 2017–2026.
Market Heat by year (0–100)
Momentum Market Heat, 2018–2026. Now 56 (normal).
This home’s history
- 2019BuiltPer public record
- Sep 3, 2026First seen on movewithmomentum.comObserved at $419,000
- NowUnder contractCurrently pending
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
3 closed sales in Treaty Oaks 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 3 sales: $445,000 ($201/sq ft). Directional only — a small or wide-radius sample. Shown for general reference only — not an appraisal or a statement of this home’s value.
The Messtimate
This is a deliberately dumb estimate — living area times a range of recent neighborhood $/sq ft, and nothing else. It is not an appraisal, not market value, and not a valuation of this home. Even a tight range from comparable sales can’t price a specific home — here’s why.
Directional estimate — 3 comparable closed sales in Treaty Oaks, closed within the last 18 months, same property type, living area within 30% of this home.
Actual list price: $419,000 — compare it against the range above. The Messtimate is a blind sqft estimate; the list price reflects this specific home.
A 27% spread on the same house — and that gap is exactly what an automated guess can't see:
- Condition & updates — a renovated kitchen or new roof vs. dated finishes can swing value six figures; sq ft can't see it.
- The lot & views — a premium golf, water, or preserve lot vs. a road-facing one: same sq ft, very different price.
- Outliers skew it — one flip or distressed sale in the comps drags the whole $/sq ft up or down.
- Carrying costs & concessions — this home carries HOA dues of $64/mo; with insurance and any seller-paid buydown, that changes what a buyer actually pays, and a sq ft estimate ignores all of it.
And here's what the live market is doing — which the number above ignores entirely:
- This home: 21 days on market vs. a 15-day community median
- 4 active listings competing, 1 under contract
- ≈8.0 months of supply
- 6 closed here in the last 12 months
For reference, this home is listed at $419,000 ($231/sq ft). The list price is the seller's asking price and is not derived from this range.
Selling your own home? Try the Messtimate on your address →
Methodology: 1,816 sq ft × $177–$225/sq ft (±12% around the median of 3 comparable closed sales in Treaty Oaks, last 18 months; MLS closed-sale records). Estimate for general information only; not an appraisal, valuation, or offer. Updated October 13, 2026.
Momentum Property Score
45/100 is below average 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. 8.0 months of supply in the surrounding market and 21 days on market for this home, against a 15-day area median.Days on market:this home 21Area median: 15 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 12, 2026.
🟡 Asking $231 per square foot, about 15% above the community’s $201 median. Treaty Oaks’s 12-month median sold price per square foot is $201. Median sold price per square foot is up 4.7% year over year. Confidence: Medium · 9 closed sales in 12 monthsMLS facts: realMLS closed sales. A per-square-foot gap is context, not an appraisal; condition, lot, and view set the final number here.
74% of homes in Treaty Oaks are owner-occupied. An estimated 26% are non-owner-occupied, including 8% held in a company or trust and 11% out-of-state owners.Why it matters: a high owner-occupied share typically means fewer rentals nearby and steadier resale demand.Source: Florida Department of Revenue 2025 assessment roll (public records), 88 homes matched. Community-level context.
Recent Treaty Oaks sales closed near 96.2% 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 realMLS records, community-level, 12 months ending October 12, 2026. Aggregates only; deemed reliable but not guaranteed.
What’s unique here: one of only 4 active listings in Treaty Oaks, no CDD assessment.
Jump to: About this home · Every number, sourced · Monthly cost · Flood & risk · History · FAQ
Updated October 13, 2026 · MLS facts carry their source; interpretation lines are Momentum Research · Data sources & freshness
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Listed by ERA ONETEAM REALTY · MLS # 2163127
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More on Treaty Oaks
Go deeper on Treaty Oaks
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.
Assigned schools per the MLS listing — assignments can change; confirm current zoning with the district. Browse school-zone pages →
Drive times to everyday places
Approximate driving times to verified nearby destinations. Estimates for general reference; actual times vary with traffic and route.
Groceries
- Publix 4 min
Dining
- ZENSHI Handcrafted Sushi 3 min
Shopping
- Treaty Oaks Marketplace 4 min
Parks
- Treaty Park 6 min
City, county & community guides
Where this home sits, with links to the matching guides. General reference only.
Buyer research checklist
Items worth confirming for 687 SANDSTONE Drive, chosen from what the record shows. This is general guidance, not advice about this specific property.
- Built in 2019: confirm the roof and HVAC install dates and whether any builder or manufacturer warranty transfers.
- HOA dues are listed at $64/mo: request the current budget, reserves, and rules before relying on that figure or on any restriction.
- Look up the parcel on FEMA's Flood Map Service Center and confirm with your insurer whether flood insurance is required.
- 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.
- Listed living area is 1,816 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 $4,975/yr) assumes reassessment at the list price less the homestead exemption. Estimated buyer taxes are about $1,050 more per year than the current owner’s estimated bill (+27%). Exemptions and portability change the actual bill — confirm with the county property appraiser.
- School zoning shown here comes from district data and changes; confirm the assigned schools directly with the district before relying on them.
Data sources & freshness
| Listing record | realMLS, checked against the MLS hourly (last: October 13, 2026) |
| Comparable sales | realMLS closed sales in Treaty Oaks, last 18 months, as of October 12, 2026 |
| Flood zone & elevation | Not verified for this address — look it up at msc.fema.gov |
| Taxes & monthly cost | Certified county tax roll (parcel-matched) × county millage; 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 687 SANDSTONE Drive and when was it built?
Per the listing record, 687 SANDSTONE Drive was built in 2019 and has 1,816 sq ft of living area, 4 bedrooms and 2.0 bathrooms. Living area and lot size come from the MLS record and should be verified against the county property appraiser.
What community is 687 SANDSTONE Drive in?
687 SANDSTONE Drive is in Treaty Oaks in St. Augustine, St. Johns County. The comparable-sales section on this page shows recent closed sales nearby from the same MLS data.
Does 687 SANDSTONE Drive have an HOA, and how much are the dues?
The listing reports HOA dues of $64 per month. Dues, what they cover, and the community's rules should be confirmed from the association's current documents before relying on them.
Why might property taxes on 687 SANDSTONE Drive differ from the current owner's?
The estimate on this page (about $4,975 per year) assumes reassessment at the list price less the homestead exemption. Estimated buyer taxes are about $1,050 more per year than the current owner’s estimated bill (+27%). 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 687 SANDSTONE Drive in a flood zone?
A flood designation has not been verified for this address. Look up the parcel on FEMA's Flood Map Service Center (msc.fema.gov) and confirm with your insurer.
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 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 and we will review and correct or remove it promptly.
Automated content. Some summaries, distances, and estimates on this page are generated automatically from public and proprietary data sources and may contain errors or omissions. We strive for accuracy but cannot guarantee the completeness or accuracy of any information. Verify anything important independently.
No warranty; measurements & photos. No guarantee, warranty, or representation of any kind is made regarding the completeness or accuracy of any information, descriptions, or measurements on this page — including square-footage measurements and property condition — all of which should be independently verified through appropriate means, including in-person inspection and public records. Photographs may be virtually staged or digitally enhanced and may not reflect actual property conditions. Momentum Realty and its agents expressly disclaim any liability in connection with the information provided.
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. Real estate brokerage services provided by Momentum Realty, licensed in Florida and Georgia. © 2026 Move With Momentum LLC.