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Front exterior of a new home in RiverTown, St. Johns, FL, highlighting curb appeal (Image 1).
Under construction
  • 4 bd
  • 4 ba
  • 3,368 sqft
Home inRiverTownbyMattamy HomesTopaz Plan

399 Sir Barton Dr, St. Johns, FL 32259

$834,886

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  • Single-Family
  • Ready by May 2026
  • $247.89/sqft
  • $53/annual HOA

Home description

Lot 111 - The Topaz with its Low Country elevation blends timeless coastal charm with thoughtfully designed living. This spacious 4-bedroom, 3.5-bath home with a 3-car garage offers comfort and easy entertaining. A bright foyer opens to an expansive Great Room and dining area that flow to the extended lanai, filling the home with natural light. The chef-inspired kitchen features a large island overlooking the living space, plus a morning kitchen and walk-in pantry for seamless hosting. The private owner's suite sits at the rear, while two secondary bedrooms share a separate hall. A fourth bedroom with garage entry ensures guest privacy. A front study replaces the flex room, and Bath 2 includes a walk-in shower. Located in RiverTown along the St. Johns River, residents enjoy parks, trails, fitness, and vibrant outdoor living.

Listed by MATTHEW BERKIS, Matt.Berkis@mattamycorp.com
MATTAMY REAL ESTATE SERVICES, MLS 2130792

May also be listed on the Mattamy Homes website

Information last verified by Jome: Today at 1:31 AM (February 20, 2026)

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Estimated value based on Jome data, T&C apply

Home details

*Pricing and availability are subject to change.
Property status:
Under construction
Collection:
RiverTown - Springs
Size:
3,368 sqft
Stories:
1
Beds:
4
Baths:
4
Half baths:
1
Garage spaces:
3
Facing direction:
Southeast
Topaz image

Floor plan details

Topaz

from$779,990
  • 4 bd
  • 3.5 ba
  • 3,368 sqft

View Topaz details

Topaz

Construction details

Builder Name:
Mattamy Homes
Completion Date:
May, 2026
Year Built:
2025
Roof:
Shingle Roofing

Home features & finishes

Construction Materials:
CementFrame
Cooling:
Central Air
Garage/Parking:
Door OpenerGarageAttached Garage
Interior Features:
Walk-In ClosetFoyerPantryBreakfast Bar
Kitchen:
DishwasherMicrowave OvenRefrigeratorDisposalGas CooktopFreezerKitchen IslandDouble Oven
Laundry facilities:
DryerWasherUtility/Laundry Room
Property amenities:
Porch
Rooms:
Primary Bedroom On MainKitchenDining RoomFamily RoomBreakfast AreaOpen Concept FloorplanPrimary Bedroom Downstairs
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Utility information

Heating:
Thermostat, Water Heater, Central Heating, Tankless water heater
Utilities:
Electricity Available, Sewer Available, Water Available
RiverTown image

Community details

RiverTown at RiverTown

by Mattamy Homes, St. Johns, FL

from$241,490
  • 109 homes
  • 44 plans
  • 1,206 - 4,461 sqft

View RiverTown details

RiverTown

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Extra incentives may apply to these homes
Pricing and availability are subject to change.
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2+ baths
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4+ baths

Floor plans in RiverTown

Any
2+ beds
3+ beds
4+ beds
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About the builder - Mattamy Homes

Mattamy Homes
With a legacy spanning over four decades, Mattamy Homes designs new construction homes and communities centered on how families truly live. As North America's largest privately owned homebuilder, the company is recognized for its architectural innovation and thoughtful neighborhood planning, helping more than 8,000 families find their dream home each year.
View Mattamy Homes builder profile >

Neighborhood

Home address

399 Sir Barton Dr, St. Johns, FL 32259
City:
St. Johns
County:
St. Johns
Zip Code:
32259
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Schools in St. Johns County School District

Sir Barton Dr by Mattamy Homes is served by the St. Johns County School District, offering a complete academic progression in St. Johns, Florida. High school students attend Bartram Trail High School, a public campus for High grades positioned around 3.2 mi and recorded with a rating of 9. Middle-grade learners move through Switzerland Point Middle School (Middle grades), which is located roughly 1.7 mi from the community. Younger students start at Hickory Creek Elementary School, teaching Elementary grades just 1.8 mi away.
GreatSchools.org logo

GreatSchools’ Summary Rating calculation is based on 4 of the school’s themed ratings, including test scores, student/academic progress, college readiness, and equity. This information should only be used as a reference. Jome is not affiliated with GreatSchools and does not endorse or guarantee this information. Please reach out to schools directly to verify all information and enrollment eligibility. Data provided by GreatSchools.org © 2025

More homes in St. Johns County School District

Places of interest

River
Black Creek6.7 mi
Julington Creek7.4 mi
Durbin Creek9.2 mi
Lake
Doctors Lake7.6 mi
Lake Mandarin9.3 mi
Lake Shore15.8 mi

Getting around

Daily logistics at Sir Barton Dr by Mattamy Homes are shaped by the local transportation network. The Walk Score of 1 (Car-Dependent) serves as a key indicator of neighborhood connectivity and pedestrian ease. For those interested in two-wheeled travel, the Bike Score of 31 (Somewhat Bikeable) outlines the feasibility of cycling in the area. Together, these factors describe local transportation and mobility.
Walk score ®
1 /100
Car-Dependent
Bike score ®
31 /100
Somewhat Bikeable

Noise level

Environmental sound levels for RiverTown by Mattamy Homes are quantified by a composite rating that aggregates multiple factors. According to data from Soundscore, the overall Noise Score is Calm, which is classified as Calm. This measurement accounts for specific contributors, including traffic (Calm), local sources (Calm), and airport activity (Calm). These metrics provide a baseline for understanding noise levels in St. Johns, Florida.
99
50Calm100
Traffic noiseCalm
Local sources noiseCalm
Airports noiseCalm

A Soundscore™ rating is a number between 50 (very loud) and 100 (very quiet) that tells you how loud a location is due to environmental noise.

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Real MLS Logo
Listed by MATTHEW BERKIS, Matt.Berkis@mattamycorp.com
MATTAMY REAL ESTATE SERVICES, MLS 2130792

IDX information is provided exclusively for personal, non-commercial use, and may not be used for any purpose other than to identify prospective properties consumers may be interested in purchasing. Data is deemed reliable but is not guaranteed accurate by NEFMLS. © 2025 Northeast Florida Multiple Listing Service, Inc. All rights reserved.

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Last checked Feb 20, 11:00 am

  1. Jome
  2. New homes search
  3. Florida
  4. Jacksonville Metropolitan Area
  5. St. Johns County
  6. St. Johns
  7. RiverTown
  8. RiverTown - Springs
  9. 399 Sir Barton Dr, St. Johns, FL 32259