OFF MARKET

Off Market Mar 2011 for $285K

—

Est. refi paymentEst. refi $917/mo

•

1 ba

•

624

sq ft

20857 San Mar Rd, Boonsboro, MD 21713

About this home

Boonsboro! Former, Antietam Equestrian Center, 15.27 acres, 60 x 100 indoor arena, lighted outdoor arena with a 2 bedroom mobile home on property , conveying "as is". Easy access major highways. Listing agent or company representative to accompany showings.

RanchProperty Type

1967Year Built

15.27 acresLot Size

$457Price/Sq.Ft.

Listed by Roger Fairbourn • Roger Fairbourn Real Estate

•301-733-4183 (broker)

Bought with Jeffrey Cline • Roger Fairbourn Real Estate

•301-733-4183 (broker)

Redfin checked: 4 minutes ago

•Source:BRIGHT MLS #1005320790

Redfin Estimate

There isn’t enough information to generate an accurate estimate at this time. Learn More

Market trends in 21713, MD

Last updated August 2026

Buyer's Market

Seller's Market

Seller's market

Sale-to-List Price

99.3%

+0.4% MoM

Median sale price

$427K

$7K MoM

Avg. days on market

40d

0 days MoM

Recently sold homes

2 MoM

New listings for sale

COMING SOON
$299,900
3 beds1 bath1,340 sq ft
7701 Sharpsburg Pike, Boonsboro, MD 21713
(888) 860-7369
NEW 9 HRS AGO
$230,000
3 beds2 baths858 sq ft
8118 Mapleville Rd, Boonsboro, MD 21713
(301) 790-1700
NEW 11 HRS AGO
$509,900
3 beds2.5 baths1,680 sq ft
5826 Moser Rd, Boonsboro, MD 21713
(301) 745-1500
OPEN SAT, 12PM TO 3PM
$465,000
3 beds2.5 baths2,099 sq ft
6 Thompson Ct, Boonsboro, MD 21713
(301) 882-8710
OPEN SEP 27, 1PM TO 3PM
$530,000
4 beds3.5 baths3,227 sq ft
218 Monument Dr, Boonsboro, MD 21713
(240) 309-6000
$535,000
6 beds3.5 baths3,714 sq ft
104 N Main St, Boonsboro, MD 21713
(301) 694-8000
See all

Provided by Redfin

Sale history for 20857 San Mar Rd

Date

Event

Price

MRIS #WA7061381

Mar 2, 2011

Pending

—

May 17, 2010

Price Changed

$529/sq ft

May 18, 2009

Listed

$577/sq ft

BRIGHT MLS #1005320790

Mar 16, 2011

Sold

$285,000

$457/sq ft

Mar 2, 2011

Listing Removed

—

May 18, 2009

Listed

$330,000

$529/sq ft

Public Records

Nov 12, 2004

Sold

$460,000

$737/sq ft

MRIS #WA5064183

Oct 21, 2004

Delisted

—

Oct 7, 2004

Listed

$761/sq ft

MRIS #WA5064262

Oct 21, 2004

Delisted

—

Oct 7, 2004

Listed

$761/sq ft

Public Records

Jan 31, 2003

Sold

$225,000

$361/sq ft

MRIS #WA4394366

Dec 27, 2002

Listed

$361/sq ft

Dec 26, 2002

Delisted

—

MRIS #WA4379506

Dec 27, 2002

Delisted

—

Dec 2, 2002

Listed

Public Records

Apr 2, 1996

Sold

$75,000

$120/sq ft

** Price available after signing in.

Join or sign in to view all info

Year

Property tax

Land + Additions

Assessment*

2026

$3,309 (+7.1%)

2025

$3,089 (+7.7%)

2024

$2,869 (+1.0%)

2023

$2,839 (+1.1%)

$161,300 + $110,000

$271,300

2022

$2,810 (−1.2%)

2021

$2,845 (+0.4%)

2020

$2,832 (−0.4%)

$161,300 + $101,400

$262,700

2019

$2,845 (−0.6%)

$161,300 + $101,400

$262,700

2018

$2,862

$161,300 + $103,000

$264,300

2017

$2,862 (−4.5%)

$161,300 + $103,000

$264,300

2016

$2,996

$161,300 + $115,700

$277,000

2015

$2,996

$161,300 + $115,700

$277,000

2014

$2,996 (−5.5%)

2013

$3,169 (+1.0%)

2012

$3,139

2011

$3,139 (−19.8%)

2010

$3,914 (+18.1%)

2009

$3,315

Tax history for 20857 San Mar Rd

Year

Property tax

Land + Additions

Assessment*

2026

$3,309 (+7.1%)

2025

$3,089 (+7.7%)

2024

$2,869 (+1.0%)

2023

$2,839 (+1.1%)

$161,300 + $110,000

$271,300

2022

$2,810 (−1.2%)

2021

$2,845 (+0.4%)

2020

$2,832 (−0.4%)

$161,300 + $101,400

$262,700

2019

$2,845 (−0.6%)

$161,300 + $101,400

$262,700

2018

$2,862

$161,300 + $103,000

$264,300

2017

$2,862 (−4.5%)

$161,300 + $103,000

$264,300

2016

$2,996

$161,300 + $115,700

$277,000

2015

$2,996

$161,300 + $115,700

$277,000

2014

$2,996 (−5.5%)

2013

$3,169 (+1.0%)

2012

$3,139

2011

$3,139 (−19.8%)

2010

$3,914 (+18.1%)

2009

$3,315

*Taxable value of land and structures on it ("additions") is determined regularly by local assessors and does not affect market price.

Public record

Public record
Zoning

Beds

—

Baths

Stories

Lot width

—

Lot depth

—

Lot size

15.27 Acres

Year renovated

—

Sq. Ft.

624

Year built

2004

Style

Mobile/Manufactured Home

County

Washington County

APN

16 021725

Parking Spaces

—

Basement

—

Accessible

—

HOA Dues

—

Garage

—

Features

—

Last updated by owner on Sep 8, 2026.

A(R)

Agricultural Rural District

The purpose of this district is to provide for continued farming activity and the many uses that do not require public water and sewerage facilities and which may be more suitably located outside of the urban-type growth of the larger communities of the County. The Agricultural zoning district has been purposely drawn to enclose large blocks of the best soils for intensive agricultural production as well as gently rolling topography for farming. Most of the operating farms as well as the largest block of farmland preserved through the Agricultural Preservation Program is located in this area.

Permitted uses

Include but are not limited to:

Agriculture
Equestrian facility
Greenhouse / nursery
Religious facility
Day care facility
Housing-Single unit
Housing-Multiple units
Manufacturing
Public service
Educational/school

Property details

Parking

Parking Information
Other

Interior

Bedroom Information
# of Bedrooms On Main Level: 2

Bathroom Information
# of Bathrooms (Full) On Main Level: 1
# of Bathrooms (Full): 1

Interior Information
Interior Features: Other

Basement Information
Basement: No

Exterior

Property Information
Accessibility Features: Other
Improvement Assessed Value: $160,020
Ownership Interest: Fee Simple
Year Built Source: Estimated

Building Information
Construction Materials: Metal Siding
Other Structures: Barn/Stable, Barn, Horse Stable, Indoor Arena

Lot Information
Tidal Water: No

Land Information
Land Assessed Value: $206,350

Farm Information
Horse
Remarks: Boonsboro! Former, Antietam Equestrian Center, 15.27 acres, 60 x 100 indoor arena, lighted outdoor arena with a 2 bedroom mobile home on property , conveying "as is". Easy access major highways. Listing agent or company representative to accompany showings.

Financial

Tax Information
Agricultural Tax Due: No
County Tax: $3,314.64
Tax Assessed Value: $366,370
Tax Year: 2008
Tax Annual Amount: $3,314.64

Assessments Information
Year Assessed: 2009

Utilities

Utilities Information
Baseboard
Heating Fuel: Electric
Hot Water: Electric
Sewer Septic: Septic Exists
Water Source: Well

Location

Location Information
Directions: From the intersection of Interstate 70. & Rt 40. Take Rt 40 East to a Right onto Mapleville RD (Sheetz convenience store)towards Boonsboro. Turn left on San Mar Rd. Farm is on the right. Look for sign.

Public facts

Beds: —
Baths: 1.0
Sq. Ft.: 624
Stories: 1.0
Lot Size: 15.27 acres
Style: Mobile/Manufactured Home
Year Built: 2004
Year Renovated: —
County: Washington County
APN: 16 021725

Home facts updated by county records on Sep 8, 2026

Around this home

Schools

Greenbrier Elementary School

Public PreK-5 • Assigned • 0.7mi

7/10

Boonsboro Middle School

Public 6-8 • Assigned • 2.5mi

8/10

Boonsboro High School

Public 9-12 • Assigned • 2.5mi

9/10

Provided by GreatSchools

Lifestyle

Provided by Walk Score and Local Logic

Climate risks

1/10 Flood Factor

Minimal risk of a flood reaching the building in the next 30 years

3/10 Fire Factor

0.15% chance of being in a wildfire in next 30 years

5/10 Heat Factor

7 days above 99° expected this year, 16 days in 30 years

3/10 Wind Factor

5% chance of strong winds in next 30 years

2/10 Air Factor

0 unhealthy days expected this year, 1 days in 30 years

Provided by First Street

Historical weather

Boonsboro, MD • 21713

Average low and high temperatures (°F)

Jan

Feb

Mar

Apr

May

Jun

Jul

Aug

Sep

Oct

Nov

Dec

Sun exposure

Try the sun simulator tool to see how light moves across the property at different times of day and year.

Provided by Shadowmap

Is this your home?

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New listings for sale in 21713

COMING SOON

$299,900

3 beds1 bath1,340 sq ft

7701 Sharpsburg Pike, Boonsboro, MD 21713

(888) 860-7369

NEW 9 HRS AGO

$230,000

3 beds2 baths858 sq ft

8118 Mapleville Rd, Boonsboro, MD 21713

(301) 790-1700

NEW 11 HRS AGO

$509,900

3 beds2.5 baths1,680 sq ft

5826 Moser Rd, Boonsboro, MD 21713

(301) 745-1500

OPEN SAT, 12PM TO 3PM

$465,000

3 beds2.5 baths2,099 sq ft

6 Thompson Ct, Boonsboro, MD 21713

(301) 882-8710

OPEN SEP 27, 1PM TO 3PM

$530,000

4 beds3.5 baths3,227 sq ft

218 Monument Dr, Boonsboro, MD 21713

(240) 309-6000

$535,000

6 beds3.5 baths3,714 sq ft

104 N Main St, Boonsboro, MD 21713

(301) 694-8000

Home values near 20857 San Mar Rd

Data from public records.

Address	Redfin Estimate
20827 San Mar Rd, Boonsboro, MD - Beds \| 2 Baths \| 1932 Sq. Ft.	$435,251
20816 San Mar Rd, Boonsboro, MD - Beds \| 1.5 Baths \| 1350 Sq. Ft.	$324,363

Address	Redfin Estimate
20803 San Mar Rd, Boonsboro, MD - Beds \| 1 Baths \| 1448 Sq. Ft.	$233,487
20921 San Mar Rd, Boonsboro, MD - Beds \| 2 Baths \| 768 Sq. Ft.	$331,684

Address	Redfin Estimate
20935 San Mar Rd, Boonsboro, MD - Beds \| 1 Baths \| 782 Sq. Ft.	$343,661
20832 San Mar Rd, Boonsboro, MD - Beds \| 2 Baths \| 1094 Sq. Ft.	$376,665

Property information provided by BRIGHT MLS when last listed in 2009. This data may not match . Learn more.

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About this home

Redfin Estimate

Market trends in 21713, MD

Sale history for 20857 San Mar Rd

Tax history for 20857 San Mar Rd

Public record

Property details

Around this home

Schools

Lifestyle

Climate risks

Historical weather

Sun exposure

Is this your home?

Nearby similar homes

New listings for sale in 21713

Home values near 20857 San Mar Rd

More real estate resources