6140 COUNTY ROAD 315C, Keystone Heights, FL, 32656 | $975,000

Under contract-accepting backup offers. Welcome to your private kingdom - a majestic, custom-designed estate nestled on 4 manicured acres, complete with a serene stocked pond and surrounded by a stately brick wall with an iron gate. This fortress-like masterpiece evokes the grandeur of a modern-day castle, crafted with unmatched precision and an unwavering commitment to quality by its original owner. At the heart of the estate lies a 4-bedroom, 4-bathroom main residence (5, 170 sq ft), artfully designed with soaring ceilings, intricate brick archways, and a striking fireplace centerpiece that anchors the grand living space. With two full kitchens and two laundry rooms - strategically placed both upstairs and down - this home effortlessly blends function with elegance. Every detail echoes a sense of permanence and luxury, from the 18-inch-thick, steel-reinforced exterior walls to the 6-inch solid concrete foundation and durable metal roof, secured with double-strapped trusses.

Inside, reinforced concrete interior walls and layered high-efficiency insulation create a sanctuary of tranquility and resilience. A state-of-the-art 300-amp electrical system and whole-home surround sound ensure modern convenience within this timeless structure.

Outdoors, discover a private resort built for royal-scale entertaining: a sparkling saltwater pool, two fully-equipped outdoor kitchens with dedicated pool bathroom, four BBQ pits, four outdoor showers, and a custom masonry fire pit. Two deep wells provide ample water for the estate, while two detached four-car garages offer abundant space for a car collection, toys, or storage.

Above one garage, a beautifully finished 988 sq. ft. guest apartment stands as its own fortress, constructed with 12-inch-thick concrete block walls and featuring a full kitchen, living area, bedroom, bath, and a private deckperfect for hosting guests or generating rental income.

Expansive balconies overlook the grounds, offering panoramic views and moments of serene reflection. The spacious bonus/game room and oversized bedrooms offer comfort and flexibility for both everyday living and grand-scale entertaining.

This estate is not just a homeit's a legacy of strength, elegance, and timeless design. A rare opportunity to own a property that combines the fortified feel of a castle with the refined luxuries of a modern retreat.

Features

  • Rooms: 3
  • Bedrooms: 5
  • Baths: 6 full
  • Laundry: Electric Dryer Hookup, Washer Hookup
  • Year Built: 1993
  • Garage: 2-car Guest, RV Parking
  • Heating: Central
  • Cooling: Central Air
  • Approx Sq. Feet: 6,158
  • Acreage: 3.78
  • Est. Taxes: $5,773
  • Pool: In Ground, Pool Sweep, Salt Water
  • Appliances: Convection Oven, Dishwasher, Microwave, Refrigerator
  • MLS#: FC314358
  • Days on Market: 93 days
  • Website: https://www.raveis.com
    /prop/FC314358/6140countyroad315c_keystoneheights_fl?source=qrflyer
This information is deemed reliable, but not guaranteed. The data relating to real estate displayed on this Site comes in part from the IDX Program of MFRMLS (My Florida Regional MLS DBA Stellar MLS). 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. (last updated 4/2/2026 5:26:24 AM)

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NMLS Mortgage Loan Originator ID 1500191

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6140 COUNTY ROAD 315C, Keystone Heights, FL, 32656

$975,000

Delaney Corson

Sales Associate

William Raveis Real Estate

Phone: 978.979.0813

Delaney.Corson@raveis.com

Kate Rockett

RVP, Mortgage Banker

William Raveis Mortgage, LLC

Phone: 617.281.4872

Kate.Rockett@raveis.com

NMLS Mortgage Loan Originator ID 1500191

5/6 (30 Yr)
Adjustable Rate Jumbo*
30 Year
Fixed-Rate Jumbo
15 Year
Fixed-Rate Jumbo
Loan Amount $780,000 $780,000 $780,000
Term 360 months 360 months 180 months
Initial Interest Rate** 5.750% 6.125% 6.000%
Interest Rate based on Index + Margin 8.125%
Annual Percentage Rate 6.251% 6.259% 6.203%
Monthly Tax Payment $481 $481 $481
H/O Insurance Payment $92 $92 $92
Initial Principal & Interest Pmt $4,552 $4,739 $6,582
Total Monthly Payment $5,125 $5,312 $7,155

* The Initial Interest Rate and Initial Principal & Interest Payment are fixed for the first and adjust every six months thereafter for the remainder of the loan term. The Interest Rate and annual percentage rate may increase after consummation. The Index for this product is the SOFR. The margin for this adjustable rate mortgage may vary with your unique credit history, and terms of your loan.

** Mortgage Rates are subject to change, loan amount and product restrictions and may not be available for your specific transaction at commitment or closing. Rates, and the margin for adjustable rate mortgages [if applicable], are subject to change without prior notice.

The rates and Annual Percentage Rate (APR) cited above may be only samples for the purpose of calculating payments and are based upon the following assumptions: minimum credit score of 740, 20% down payment (e.g. $20,000 down on a $100,000 purchase price), $1,950 in finance charges, and 30 days prepaid interest, 1 point, 30 day rate lock. The rates and APR will vary depending upon your unique credit history and the terms of your loan, e.g. the actual down payment percentages, points and fees for your transaction. Property taxes and homeowner's insurance are estimates and subject to change.