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Front exterior of a new home in RiverTown, St. Johns, FL, highlighting curb appeal (Image 1).
Under construction
  • 4 bd
  • 5 ba
  • 3,644 sqft
Home inRiverTownbyMattamy HomesOnyx Plan

509 Sir Barton Dr, St. Johns, FL 32259

$874,000

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  • Single-Family
  • Under construction
  • $239.85/sqft
  • $53/annual HOA

Home description

LOT 115 - Step into the Onyx Farmhouse floorplan—an inviting 4-bed, 4.5-bath home with a 3-car garage and smartly designed spaces throughout. A dedicated Study replaces the Flex Room, ideal for work or quiet time. The spacious Great Room opens to a covered lanai via a 16' multi-sliding hideaway door, blending indoor and outdoor living. The chef's kitchen, featuring a morning kitchen and walk-in pantry, flows into an entertainment-ready space with a wet/dry bar. In the Owner's Bath Oasis, unwind in a luxurious freestanding tub. RIVERTOWN is a master-planned community along the St. Johns River, residents enjoy a vibrant lifestyle with fitness amenities, social activities, and outdoor fun in Northeast Florida's sunshine. Neighborhood parks, scenic lakes, preserved natural spaces, and miles of trails connect you to the stunning surroundings.

Listed by MATTHEW BERKIS, Matt.Berkis@mattamycorp.com
MATTAMY REAL ESTATE SERVICES, MLS 2100757

May also be listed on the Mattamy Homes website

Information last verified by Jome: Today at 1:24 AM (March 7, 2026)

Home highlights

Close to Riverside/Ortega Parks & Riverwalk
Map tag
Great location

Charming Jacksonville parks with shaded trails and river views nestled in historic Riverside and Ortega neighborhoods.

16.0 miles away
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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:
3,644 sqft
Stories:
1
Beds:
4
Baths:
5
Half baths:
1
Garage spaces:
3
Facing direction:
Southeast
Onyx image

Floor plan details

Onyx

from$814,990
  • 4 bd
  • 4.5 ba
  • 3,644 sqft

View Onyx details

Onyx

Construction details

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

Home features & finishes

Appliances:
Water Softener
Construction Materials:
CementFrame
Cooling:
Central Air
Garage/Parking:
Door OpenerGarageAttached Garage
Interior Features:
Ceiling-HighWalk-In ClosetShower and Tub in Primary BathFoyerPantryBlindsBreakfast Bar
Kitchen:
DishwasherMicrowave OvenRefrigeratorDisposalGas CooktopKitchen IslandDouble Oven
Laundry facilities:
DryerWasher
Property amenities:
Bathtub in primaryPatioFireplaceSmart Home SystemPorch
Rooms:
Primary Bedroom On MainBreakfast 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
  • 132 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.
Any
2+ beds
3+ beds
4+ beds
2+ baths
3+ baths
4+ baths

Floor plans in RiverTown

Any
2+ beds
3+ beds
4+ beds
2+ baths
3+ baths
4+ baths

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

509 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

With multiple campuses serving the broader region, the St. Johns County School District provides the educational framework for Sir Barton Dr by Mattamy Homes. Children typically start at Hickory Creek Elementary School, a public school for Elementary grades situated 1.8 mi away. Switzerland Point Middle School handles the intermediate years (Middle grades) and is located roughly 1.6 mi from home with a rating of 9. The path leads ultimately to Bartram Trail High School, serving High grades within 3.2 mi. This defines the local school pathway.
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 Creek9.1 mi
Lake
Doctors Lake7.5 mi
Lake Mandarin9.2 mi
Lake Shore15.8 mi

Getting around

The infrastructure near Sir Barton Dr by Mattamy Homes is evaluated for different forms of navigation. A Walk Score of 1 (Car-Dependent) suggests the level of pedestrian activity possible in the area. Biking is assessed with a Bike Score of 31 (Somewhat Bikeable), which is helpful for understanding active travel options. This overview reflects walkability near Sir Barton Dr by Mattamy Homes.
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 2100757

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 Mar 7, 1:00 am

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