Google street view image for 4830 Porterstown Rd, Keedysville, MD 21756

Off market

$215,187

—

•

1 ba

•

1,360

sq ft

4830 Porterstown Rd, Keedysville, MD 21756

About this home

4830 Porterstown Rd is a 1,360 square foot house on a 1.23 acre lot with 1 bathroom. Based on Redfin's Keedysville data, we estimate the home's value is $215,187.

Single-familyProperty Type

1862Year Built

1.23 acresLot Size

$158Est. Price/Sq.Ft.

Source:Public Records

Redfin Estimate

$215,187

$13K since October

Recently sold homes
Estimate history
Homes for sale

This home's estimate is 17.2% lower than the average sale price ($260K) of 6 comparable homes.

SOLD SEP 22, 2026
$282,000
A
2 beds1 bath1,328 sq ft
4320 Trego Rd, Keedysville, MD 21756
SOLD JUL 8, 2026
$235,000
B
2 beds1 bath1,280 sq ft
4402 Main St, Rohrersville, MD 21779
SOLD APR 2, 2026
$370,000
C
3 beds1 bath1,460 sq ft
4312 Main St, Rohrersville, MD 21779
SOLD AUG 19, 2026
$327,000
D
3 beds1.5 baths1,604 sq ft
20107 Hogmaw Rd, Keedysville, MD 21756
SOLD MAY 15, 2026
$55,000
E
Land— sq ft
4809 Woodstock Ln, Rohrersville, MD 21779
SOLD JUL 14, 2026
$289,900
F
3 beds1.5 baths1,152 sq ft
6213 Appletown Rd, Boonsboro, MD 21713

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Earn from this home

Sell

$200,751

Est. take-home

List your home with Redfin and save $2,152

Market trends in 21756, MD

Last updated October 2026

Buyer's Market

Seller's Market

Seller's market

Sale-to-list price

98.7%

+0.1% MoM

Median sale price

$540K

$277 MoM

Avg. days on market

44d

0 days MoM

Recently sold homes

2 MoM

New listings for sale

$279,900
3 beds1.5 baths1,456 sq ft
4303 Trego Rd, Keedysville, MD 21756
(301) 800-9371
$525,000
5 beds2.5 baths3,050 sq ft
15 Farragut Dr, Keedysville, MD 21756
(703) 679-1700
See all

Provided by Redfin

Sale history for 4830 Porterstown Rd

As the MLS and public records start to fill up, we'll list the details here.

Year

Property tax

Land + Additions

Assessment*

2026

$1,797 (+6.9%)

$67,300 + $100,500

$167,800

2025

$1,681 (+7.4%)

$67,300 + $100,500

$167,800

2024

$1,565 (+8.0%)

2023

$1,448 (+1.2%)

2022

$1,432 (−1.1%)

$67,300 + $66,800

$134,100

2021

$1,448 (+1.6%)

2020

$1,424 (+3.4%)

2019

$1,378 (+4.0%)

$67,300 + $62,000

$129,300

2018

$1,325 (+4.2%)

2017

$1,272 (+480.6%)

$67,300 + $47,000

$114,300

2016

$219 (−75.3%)

$67,300 + $47,000

$114,300

2015

$886 (+4.7%)

$67,300 + $47,000

$114,300

2014

$847 (+6.5%)

2013

$795 (−36.1%)

2012

$1,245 (+3.4%)

2011

$1,204 (+3.2%)

2010

$1,167 (+5.9%)

2009

$1,102

Tax history for 4830 Porterstown Rd

Year

Property tax

Land + Additions

Assessment*

2026

$1,797 (+6.9%)

$67,300 + $100,500

$167,800

2025

$1,681 (+7.4%)

$67,300 + $100,500

$167,800

2024

$1,565 (+8.0%)

2023

$1,448 (+1.2%)

2022

$1,432 (−1.1%)

$67,300 + $66,800

$134,100

2021

$1,448 (+1.6%)

2020

$1,424 (+3.4%)

2019

$1,378 (+4.0%)

$67,300 + $62,000

$129,300

2018

$1,325 (+4.2%)

2017

$1,272 (+480.6%)

$67,300 + $47,000

$114,300

2016

$219 (−75.3%)

$67,300 + $47,000

$114,300

2015

$886 (+4.7%)

$67,300 + $47,000

$114,300

2014

$847 (+6.5%)

2013

$795 (−36.1%)

2012

$1,245 (+3.4%)

2011

$1,204 (+3.2%)

2010

$1,167 (+5.9%)

2009

$1,102

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

Zoning

AO3

Preservation District

The purpose of this district is to prescribe a zoning category for those areas where, because of natural geographic factors and existing land uses, it is considered feasible and desirable to conserve open spaces, water supply sources, woodland areas, wildlife and other natural resources. This district includes the County’s designated Rural Legacy Area, federal lands, state parks, state wildlife management areas, county parks, Edgemont Watershed, and most of the mountaintops and the Potomac River.

Zone overlays

Red Hill (Forest) 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

Interior

Bathroom Information
# of Full Baths: 1

Heating & Cooling
Heating Type: Space

Exterior

Exterior Information
Building Construction Quality: Economical
Exterior Wall: Frame
Building Type: Single Family

Property Information
Living Sq. Ft: 1,360
Building Sq. Ft: 1,360
# of Stories: 2
Stories Type: 2 Story With Basement
Legal Description: 1.232 ACRES 4830 PORTERSTOWN ROAD

Lot Information
# of Buildings: 2
Land Sq. Ft: 53,579
Acres: 1.23
Zoning Code: P
State Use Description: RESIDENTIAL

Utility Information
Sewer Type: Private

Financial

Assessor Information
Assessment Year: 2026
Tax District County: 01

Public facts

Beds: —
Baths: 1.0
Sq. Ft.: 1,360
Stories: 2.0
Lot Size: 1.23 acres
Style: Single Family Residential
Year Built: 1862
Year Renovated: —
County: Washington County
APN: 01 008498

Home facts updated by county records on Sep 19, 2026

Around this home

Schools

K - 12
Preschool & daycare

Sharpsburg Elementary School

Public PreK-5 • Assigned • 3.0mi

5/10

Boonsboro Middle School

Public 6-8 • Assigned • 5.5mi

8/10

Boonsboro High School

Public 9-12 • Assigned • 5.5mi

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

4/10 Heat Factor

6 days above 102° expected this year, 13 days in 30 years

2/10 Wind Factor

3% chance of strong winds in next 30 years

2/10 Air Factor

1 unhealthy days expected this year, 2 days in 30 years

Provided by First Street

Historical weather

Keedysville, MD • 21756

Average low and high temperatures (°F)

36°

21°

43°

26°

61°

39°

69°

47°

73°

54°

84°

64°

89°

69°

82°

61°

80°

57°

67°

45°

57°

38°

43°

28°

Jan

Feb

Mar

Apr

May

Jun

Jul

Aug

Sep

Oct

Nov

Dec

Sun exposure

In this area, properties receive around 9.1 hours in June and 3.8 hours in December, placing it below the U.S. average for solar exposure.

9.1 hrs

3.8 hrs

JuneDecember

Provided by Shadowmap

Estimated sale price

$205,000 – $248,000

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New listings for sale in 21756

$279,900

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4303 Trego Rd, Keedysville, MD 21756

Hardwood floors • Spacious living room • Cozy family room

(301) 800-9371

$525,000

5 beds2.5 baths3,050 sq ft

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Quiet cul-de-sac • Bay windows • Vaulted ceiling

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Home values near 4830 Porterstown Rd

Data from public records.

Address	Redfin Estimate
5003 Porterstown Road, Keedysville, MD - Beds \| 2.5 Baths \| 4187 Sq. Ft.	$652,873
4935 Porterstown Road, Keedysville, MD 4 Beds \| 3 Baths \| 2362 Sq. Ft.	$548,800
4948 Porterstown Road, Keedysville, MD - Beds \| 2 Baths \| 980 Sq. Ft.	$164,165
4936 Porterstown Road, Keedysville, MD 1 Beds \| 1 Baths \| 480 Sq. Ft.	$111,301
4902 Porterstown Road, Keedysville, MD 3 Beds \| 1 Baths \| 1092 Sq. Ft.	$94,894
4812 Porterstown Road, Keedysville, MD - Beds \| - Baths \| - Sq. Ft.	—
4936 Red Hill Road, Keedysville, MD 5 Beds \| 4.5 Baths \| 4484 Sq. Ft.	$695,887

Address	Redfin Estimate
19206 Porterstown Road, Keedysville, MD - Beds \| 1 Baths \| 1536 Sq. Ft.	$370,574
19224 Porterstown Road, Keedysville, MD - Beds \| 2.5 Baths \| 1455 Sq. Ft.	$385,902
4800 Porterstown Road, Keedysville, MD 4 Beds \| 3.5 Baths \| 5324 Sq. Ft.	$1,035,780
4908 Porterstown Road, Keedysville, MD - Beds \| 1 Baths \| 840 Sq. Ft.	$145,044
4904 Porterstown Road, Keedysville, MD - Beds \| 1 Baths \| 672 Sq. Ft.	$92,897
4802 Porterstown Road, Keedysville, MD - Beds \| - Baths \| - Sq. Ft.	$648,262
4836 Red Hill Road, Keedysville, MD - Beds \| 1.5 Baths \| 1232 Sq. Ft.	$327,270

Address	Redfin Estimate
4831 Porterstown Road, Keedysville, MD - Beds \| 1 Baths \| 980 Sq. Ft.	—
19223 Porterstown Road, Keedysville, MD 4 Beds \| 3.5 Baths \| 2576 Sq. Ft.	$623,016
4850 Porterstown Road, Keedysville, MD 3 Beds \| 3 Baths \| 2400 Sq. Ft.	$561,696
4912 Porterstown Road, Keedysville, MD 3 Beds \| 2 Baths \| 1471 Sq. Ft.	$308,954
5006 Porterstown Road, Keedysville, MD - Beds \| 1 Baths \| 372 Sq. Ft.	$116,188
4925 Red Hill Road, Keedysville, MD 3 Beds \| 1 Baths \| 975 Sq. Ft.	$437,184
4854 Red Hill Road, Keedysville, MD 5 Beds \| 4 Baths \| 1920 Sq. Ft.	$413,895

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GreatSchools Ratings provided by GreatSchools.org.

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About this home

Redfin Estimate

Earn from this home

Market trends in 21756, MD

Sale history for 4830 Porterstown Rd

Tax history for 4830 Porterstown Rd

Zoning

Property details

Around this home

Schools

Lifestyle

Climate risks

Historical weather

Sun exposure

Nearby similar homes

New listings for sale in 21756

Home values near 4830 Porterstown Rd

More real estate resources