OFF MARKET

Off market dec 2018 for $321K

$621,581

Est. refi paymentEst. refi $2,167/mo

•

2,083

sq ft

11800 Triadelphia Rd, Ellicott City, MD 21042

About this home

Single-familyProperty Type

1867Year Built

3 acresLot Size

$298Est. Price/Sq.Ft.

Listed by Charles Billig • A.J. Billig & Company

•410-296-8440 (broker)

•info@ajbillig.com (broker)

Bought with Charles Billig • A.J. Billig & Company

•410-296-8440 (broker)

•info@ajbillig.com (broker)

Redfin checked: 3 minutes ago

•Source:BRIGHT MLS #1009907322

Redfin Estimate

$621,581

$301K since sold in December 2018$15K since September

Recently sold homes
Estimate history
Homes for sale

This home's estimate is 7.6% lower than the average sale price ($673K) of 6 comparable homes.

SOLD JUN 4, 2026
$401,500
A
4 beds2 baths1,700 sq ft
11755 Triadelphia Rd, Ellicott City, MD 21042
SOLD MAY 22, 2026
$624,000
B
3 beds2 baths2,206 sq ft
12775 Frederick Rd, West Friendship, MD 21794
SOLD MAR 6, 2026
$560,625
C
3 beds1.5 baths1,774 sq ft
11850 Ramsburg Rd, Marriottsville, MD 21104
SOLD JUL 24, 2026
$785,000
D
4 beds2.5 baths3,606 sq ft
3122 Evergreen Way, Ellicott City, MD 21042
SOLD BY REDFIN AUG 14, 2026
$890,000
E
4 beds3 baths4,156 sq ft
12213 Fawnhaven Ct, Ellicott City, MD 21042
SOLD MAY 8, 2026
$775,000
F
3 beds3.5 baths1,835 sq ft
2913 Evergreen Way, Ellicott City, MD 21042

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Earn from this home

Sell

$367,818

Est. take-home

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Refinance

Est. cash available

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Rent

$4,012/mo

Redfin rental estimate

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Market trends in 21042, MD

Last updated September 2026

Buyer's Market

Seller's Market

Seller's market

Sale-to-List Price

101.6%

1.1% MoM

Median sale price

$850K

$12K MoM

Avg. days on market

27d

9 days MoM

Recently sold homes

153

14 MoM

New listings for sale

COMING SOON
$1,100,000
4 beds3.5 baths4,190 sq ft
10329 Royal Ascot Ct, Ellicott City, MD 21042
(410) 696-2268
COMING SOON
$2,400,000
5 beds5.5 baths7,353 sq ft
10528 Pudding Ln, Ellicott City, MD 21042
(410) 823-0033
COMING SOON
$750,000
3 beds2.5 baths2,680 sq ft
12693 Triadelphia Rd, Ellicott City, MD 21042
(301) 798-9298
$700,000
5 beds3.5 baths2,824 sq ft
9329 Joey Dr, Ellicott City, MD 21042
(410) 823-0033
COMING SOON
$925,000
4 beds3.5 baths4,505 sq ft
2609 Vardon Ln, Ellicott City, MD 21042
(410) 465-6900
$649,900
3 beds3 baths1,650 sq ft
3433 Rollingview Ct, Ellicott City, MD 21042
(301) 986-8000
COMING SOON
$775,000
5 beds3 baths2,192 sq ft
3437 Jay Dr, Ellicott City, MD 21042
(703) 349-3900
$1,450,000
5 beds6 baths7,061 sq ft
4254 Buckskin Lake Dr, Ellicott City, MD 21042
(410) 465-6900
$869,900
4 beds3.5 baths4,072 sq ft
9787 Diversified Ln, Ellicott City, MD 21042
(410) 730-3456
COMING SOON
$1,375,000
5 beds4.5 baths5,055 sq ft
10432 Puccini Ln, Ellicott City, MD 21042
(410) 531-0321
See all

Provided by Redfin

Sale history for 11800 Triadelphia Rd

Year

Property tax

Land + Additions

Assessment*

2026

$7,474 (+5.1%)

2025

$7,113 (+4.7%)

2024

$6,791 (+3.3%)

2023

$6,574 (+1.5%)

$271,200 + $180,600

$451,800

2022

$6,477 (+1.7%)

2021

$6,370 (+5.0%)

2020

$6,065 (+105.9%)

$260,000 + $179,200

$439,200

2019

$2,946 (−43.1%)

2018

$5,179 (+1.4%)

$198,500 + $171,600

$370,100

2017

$5,108 (+4.5%)

2015

$4,889 (+0.8%)

2014

$4,849 (+0.9%)

2013

$4,807 (+5.3%)

2012

$4,567 (+2.0%)

2011

$4,475 (−2.9%)

2010

$4,611 (+29.6%)

2009

$3,558

Tax history for 11800 Triadelphia Rd

Year

Property tax

Land + Additions

Assessment*

2026

$7,474 (+5.1%)

2025

$7,113 (+4.7%)

2024

$6,791 (+3.3%)

2023

$6,574 (+1.5%)

$271,200 + $180,600

$451,800

2022

$6,477 (+1.7%)

2021

$6,370 (+5.0%)

2020

$6,065 (+105.9%)

$260,000 + $179,200

$439,200

2019

$2,946 (−43.1%)

2018

$5,179 (+1.4%)

$198,500 + $171,600

$370,100

2017

$5,108 (+4.5%)

2015

$4,889 (+0.8%)

2014

$4,849 (+0.9%)

2013

$4,807 (+5.3%)

2012

$4,567 (+2.0%)

2011

$4,475 (−2.9%)

2010

$4,611 (+29.6%)

2009

$3,558

*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

2.5

Stories

Lot width

—

Lot depth

—

Lot size

3 Acres

Year renovated

—

Sq. Ft.

3,161

Year built

1867

Style

Single Family Residential

County

Howard County

APN

03 280292

Parking Spaces

—

Basement

—

Accessible

—

HOA Dues

—

Garage

—

Features

—

Last updated by owner on Sep 4, 2026.

RR-DEO

Rural Residential-Density Exchange Option Overlay District

The Rural Residential District is established to allow low density residential development within a rural environment. The Rural Residential District is intended for an area of the County which is already largely committed to low density residential subdivisions. Within the RR District, agriculture is permitted as well as residential development in both cluster and non-cluster forms. Cluster development is permitted in order to protect environmental and landscape resources and to preserve agricultural land.; The DEO Overlay District is established to provide land owners in the RC and RR Districts with opportunity and incentive to preserve significant blocks of farmland in the rural area of the county. This district is also intended to encourage the clustering of residential development in areas where the development will not have an adverse impact on farm operations. To accomplish this, the DEO District allows residential density in the RC and RR Districts to be exchanged between parcels. Density exchanges in the District should result in large parcels being preserved in perpetuity, while residential development is directed toward parcels which are able to absorb the additional dwellings.

Permitted uses

Include but are not limited to:

Agriculture
Housing-Single unit
Public service
Educational/school
Fire house
Recreation
Communications tower
Park & open space

Property details

Parking

Parking Information
Off Street

Interior

Bedroom Information
# of Bedrooms On 1st Upper Level: 3

Bathroom Information
# of Bathrooms (Full) On 1st Upper Level: 1
# of Bathrooms (Half) On Main Level: 1
# of Bathrooms (Full) On All Upper Levels: 1
# of Bathrooms (Half): 1
# of Bathrooms (Full): 1

Interior Information
Flooring Type: Hardwood
Interior Features: Wood Floors
Living Area Sq.Ft. Source: Assessor

Room Information
Living Room, Dining Room, Sitting Room, Kitchen

Fireplace Information
Has Fireplace
# of Fireplaces: 2

Basement Information
Basement: Yes
Other

Exterior

Property Information
Not Federal Flood Zone
Total Below Grade Sq. Ft.: 0
Improvement Assessed Value: $171,600
Ownership Interest: Fee Simple
Year Built Source: Assessor

Building Information
Construction Materials: Vinyl Siding
Other Structures: Above Grade, Below Grade
Outdoor Living Structures: Porch(es)
Structure Type: Detached
Other Structures: Gazebo

Exterior Information
Outbuilding(s)

Lot Information
Lot Features: Stream/Creek
Lot Size Dimensions: 3 acres
Tidal Water: No

Land Information
Land Assessed Value: $198,500

Above Grade Information
Finished Sq.Ft.: 2,083
Finished Sq.Ft. Source: Assessor

Below Grade Information
Unfinished Sq.Ft. Source: Assessor
Finished Sq.Ft. Source: Assessor

Financial

Tax Information
Tax Assessed Value: $366,067
Tax Year: 2017
Tax Annual Amount: $5,036

Assessments Information
Year Assessed: 2017

Utilities

Utilities Information
Cooling Type: Other
Cooling Fuel: Other
Hot Water
Heating Fuel: Other
Sewer Septic: Community Septic Tank, Private Septic Tank
Water Source: Well

Location

School Information
Elementary School: WEST FRIENDSHIP
Middle Or Junior School: MOUNT VIEW
High School: MARRIOTTS RIDGE
School District Name: HOWARD COUNTY PUBLIC SCHOOL SYSTEM
Elementary School Source: 3rd Party
Middle School Source: 3rd Party
High School Source: 3rd Party
School District Source: 3rd Party

Location Information
Outside City Limits
Directions: Near Frederick Road
Municipality: Ellicott City

Public facts

Beds: —
Baths: 2.5
Sq. Ft.: 3,161
Stories: 2.0
Lot Size: 3 acres
Style: Single Family Residential
Year Built: 1867
Year Renovated: —
County: Howard County
APN: 03 280292

Home facts updated by county records on Sep 4, 2026

Around this home

Schools

West Friendship Elementary School

Public K-5 • Assigned • 1.4mi

10/10

Mount View Middle School

Public 6-8 • Assigned • 2.2mi

9/10

Marriotts Ridge High School

Public 9-12 • Assigned • 2.3mi

10/10

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

1/10 Fire Factor

Unlikely to be in a wildfire in next 30 years

6/10 Heat Factor

7 days above 103° expected this year, 15 days in 30 years

4/10 Wind Factor

13% chance of strong winds in next 30 years

3/10 Air Factor

2 unhealthy days expected this year, 3 days in 30 years

Provided by First Street

Historical weather

Ellicott City, MD • 21042

Average low and high temperatures (°F)

Jan

Feb

Mar

Apr

May

Jun

Jul

Aug

Sep

Oct

Nov

Dec

Sun exposure

In this area, properties receive around 9.2 hours in June and 4.3 hours in December, placing it below the U.S. average for solar exposure.

9.2 hrs

4.3 hrs

JuneDecember

Provided by Shadowmap

Estimated sale price

$591,000 – $715,000

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New listings for sale in 21042

COMING SOON

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COMING SOON

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4 beds3.5 baths4,505 sq ft

2609 Vardon Ln, Ellicott City, MD 21042

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COMING SOON

$775,000

5 beds3 baths2,192 sq ft

3437 Jay Dr, Ellicott City, MD 21042

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5 beds6 baths7,061 sq ft

4254 Buckskin Lake Dr, Ellicott City, MD 21042

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9787 Diversified Ln, Ellicott City, MD 21042

(410) 730-3456

Home values near 11800 Triadelphia Rd

Data from public records.

Address	Redfin Estimate
11789 Triadelphia Road, Ellicott City, MD 5 Beds \| 4 Baths \| 3719 Sq. Ft.	$1,088,360
11820 Triadelphia Road, Ellicott City, MD - Beds \| 2.5 Baths \| 1684 Sq. Ft.	$674,286

Address	Redfin Estimate
11805 Triadelphia Road, Ellicott City, MD - Beds \| 2.5 Baths \| 2244 Sq. Ft.	$632,223
11795 Triadelphia Road, Ellicott City, MD 4 Beds \| 1.5 Baths \| 1806 Sq. Ft.	$671,822

Address	Redfin Estimate
11750 Triadelphia Road, Ellicott City, MD - Beds \| 2 Baths \| 1679 Sq. Ft.	$496,983
11761 Triadelphia Road, Ellicott City, MD - Beds \| 1 Baths \| 1136 Sq. Ft.	$465,749

Property information provided by BRIGHT MLS when last listed in 2018. This data may not match . Learn more.

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