OFF MARKET

Off market apr 2019 for $460K

$679,123

Est. refi paymentEst. refi $810/mo

•

1,547

sq ft

12850 Triadelphia Rd, Ellicott City, MD 21042

About this home

Single-familyProperty Type

1969Year Built

2.07 acresLot Size

$439Est. Price/Sq.Ft.

3 car garageParking

Listed by Sean Rooney • Town Center Realty & Associates, Inc

•301-441-1071 (broker)

Bought with Serita Weathersby • Keller Williams Realty Centre

•410-312-0000 (broker)

•klrw676@kw.com (broker)

Redfin checked: 7 minutes ago

•Source:BRIGHT MLS #MDHW250266

Redfin Estimate

$679,123

$219K since sold in April 2019$6,000 since September

Recently sold homes
Estimate history
Homes for sale

This home's estimate is 6.8% lower than the average sale price ($729K) of 6 comparable homes.

SOLD OCT 8, 2026
$650,000
A
4 beds2.5 baths1,976 sq ft
3549 Lakeway Dr, Ellicott City, MD 21042
SOLD AUG 7, 2026
$850,000
B
3 beds3.5 baths3,008 sq ft
13356 Triadelphia Rd, Ellicott City, MD 21042
BOUGHT WITH REDFIN SEP 14, 2026
$699,000
C
4 beds2.5 baths1,896 sq ft
14020 Castlebar Dr, Glenwood, MD 21738
SOLD JAN 20, 2026
$745,000
D
4 beds2.5 baths2,464 sq ft
3447 Huntsmans Run, Ellicott City, MD 21042
BOUGHT WITH REDFIN MAY 6, 2026
$538,000
E
3 beds3 baths1,624 sq ft
13140 Triadelphia Rd, Ellicott City, MD 21042
SOLD BY REDFIN AUG 14, 2026
$890,000
F
4 beds3 baths4,156 sq ft
12213 Fawnhaven Ct, Ellicott City, MD 21042

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Earn from this home

Sell

$327,057

Est. take-home

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Refinance

Est. cash available

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Rent

$3,966/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

$2,050,000
6 beds6.5 baths8,002 sq ft
12701 Maryvale Ct, Ellicott City, MD 21042
(301) 424-0900
EARLY ACCESS
$875,000
4 beds4 baths3,855 sq ft
4009 Wildwood Way, Ellicott City, MD 21042
$784,900
3 beds2.5 baths2,338 sq ft
10173 Green Clover Dr, Ellicott City, MD 21042
(410) 729-7700
$750,000
5 beds3 baths2,937 sq ft
3813 Spring Meadow Ct, Ellicott City, MD 21042
(410) 886-7342
$240,000
2 beds1 bath842 sq ft
4712 Dorsey Hall Dr Unit 4-404, Ellicott City, MD 21042
(240) 913-8110
OPEN SUN, 12PM TO 2PM
$750,000
3 beds2.5 baths2,680 sq ft
12693 Triadelphia Rd, Ellicott City, MD 21042
(301) 798-9298
COMING SOON
$950,000
4 beds4.5 baths3,434 sq ft
9937 Baker Ln, Ellicott City, MD 21042
(443) 574-1600
COMING SOON
$600,000
3 beds3 baths1,778 sq ft
10113 Century Dr, Ellicott City, MD 21042
(410) 465-6900
$725,000
5 beds3 baths3,112 sq ft
10338 Lombardi Dr, Ellicott City, MD 21042
(443) 574-1600
$500,000
4 beds3 baths2,114 sq ft
2505 Jonathan Rd, Ellicott City, MD 21042
(301) 882-8710
See all

Provided by Redfin

Sale history for 12850 Triadelphia Rd

Year

Property tax

Land + Additions

Assessment*

2026

$8,091 (+4.8%)

2025

$7,718 (+4.9%)

2024

$7,359 (+5.5%)

2023

$6,976 (+3.9%)

$286,900 + $206,800

$493,700

2022

$6,713 (+3.1%)

2021

$6,513 (+4.7%)

2020

$6,220 (+4.5%)

$250,700 + $193,700

$444,400

2019

$5,950 (+59.4%)

2018

$3,734 (+3.1%)

$200,200 + $184,500

$384,700

2017

$3,620 (+9.8%)

2015

$3,296 (+16.0%)

$200,200 + $166,800

$367,000

2014

$2,842

2013

$2,842 (−29.3%)

2012

$4,019 (+9.2%)

2011

$3,680 (+2.9%)

2010

$3,577 (+4.1%)

2009

$3,434

Tax history for 12850 Triadelphia Rd

Year

Property tax

Land + Additions

Assessment*

2026

$8,091 (+4.8%)

2025

$7,718 (+4.9%)

2024

$7,359 (+5.5%)

2023

$6,976 (+3.9%)

$286,900 + $206,800

$493,700

2022

$6,713 (+3.1%)

2021

$6,513 (+4.7%)

2020

$6,220 (+4.5%)

$250,700 + $193,700

$444,400

2019

$5,950 (+59.4%)

2018

$3,734 (+3.1%)

$200,200 + $184,500

$384,700

2017

$3,620 (+9.8%)

2015

$3,296 (+16.0%)

$200,200 + $166,800

$367,000

2014

$2,842

2013

$2,842 (−29.3%)

2012

$4,019 (+9.2%)

2011

$3,680 (+2.9%)

2010

$3,577 (+4.1%)

2009

$3,434

*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

2.07 Acres

Year renovated

—

Sq. Ft.

2,476

Year built

1969

Style

Single Family Residential

County

Howard County

APN

03 284395

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
# of Detached Garage Spaces: 2
# of Attached Garage Spaces: 1
Garage Features: Garage - Front Entry, Garage Door Opener
# of Total Garage and Parking Spaces: 3
Has Garage
# of Garage Spaces: 3
Attached Garage, Detached Garage, Driveway

Interior

Bedroom Information
# of Bedrooms On Main Level: 3

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

Interior Information
Interior Features: Attic, Dining Area, Floor Plan - Open
Living Area Sq.Ft. Source: Assessor

Fireplace Information
# of Fireplaces: 1

Basement Information
Basement: Yes
Other

Exterior

Property Information
Total Below Grade Sq. Ft.: 0
Accessibility Features: 32"+ wide Doors
Front Foot Fee Payment Frequency: Annually
Improvement Assessed Value: $184,500
Ownership Interest: Fee Simple
Year Built Source: Assessor

Building Information
Other Structures: Above Grade, Below Grade
Structure Type: Detached
Window Features: Double Pane

Lot Information
Tidal Water: No

Land Information
Land Assessed Value: $200,200

Above Grade Information
Finished Sq.Ft.: 1,547
Finished Sq.Ft. Source: Assessor

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

Financial

Tax Information
County Tax: $4,331
Tax Assessed Value: $384,700
Tax Year: 2018
Tax Annual Amount: $5,676

Assessments Information
Year Assessed: 2018

Utilities

Utilities Information
Central Air
Cooling Type: Central A/C
Cooling Fuel: Electric
Baseboard - Electric
Heating Fuel: Electric
Hot Water: Electric
Sewer Septic: Septic Exists
Water Source: Well

Location

School Information
School District Name: HOWARD COUNTY PUBLIC SCHOOL SYSTEM
School District Source: Listing Agent

Location Information
Outside City Limits

Public facts

Beds: —
Baths: 2.5
Sq. Ft.: 2,476
Stories: 1.0
Lot Size: 2.07 acres
Style: Single Family Residential
Year Built: 1969
Year Renovated: —
County: Howard County
APN: 03 284395

Home facts updated by county records on Sep 4, 2026

Around this home

Schools

Triadelphia Ridge Elementary School

Public PreK-5 • Assigned • 1.2mi

9/10

Folly Quarter Middle School

Public 6-8 • Assigned • 1.4mi

9/10

Glenelg High School

Public 9-12 • Assigned • 2.4mi

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 104° expected this year, 15 days in 30 years

4/10 Wind Factor

15% 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

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

$646,000 – $781,000

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Home values near 12850 Triadelphia Rd

Data from public records.

Address	Redfin Estimate
12895 Triadelphia Road, Ellicott City, MD - Beds \| 1.5 Baths \| 3776 Sq. Ft.	$851,450
12770 Triadelphia Road, Ellicott City, MD - Beds \| 2 Baths \| 2256 Sq. Ft.	$714,332

Address	Redfin Estimate
12800 Triadelphia Road, Ellicott City, MD - Beds \| 2 Baths \| 1946 Sq. Ft.	$632,554
12904 Triadelphia Road, Ellicott City, MD 5 Beds \| 4.5 Baths \| 5702 Sq. Ft.	$1,421,633

Address	Redfin Estimate
12831 Triadelphia Road, Ellicott City, MD - Beds \| 3.5 Baths \| 2452 Sq. Ft.	$744,179
12851 Triadelphia Road, Ellicott City, MD 5 Beds \| 3 Baths \| 4800 Sq. Ft.	$1,016,403

Property information provided by BRIGHT MLS when last listed in 2019. This data may not match . Learn more.

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