14590 Triadelphia Mill Rd is a 2,598 square foot house on a 5 acre lot with 3.5 bathrooms. - it last sold on June 23, 1993 for $17,071. Based on Redfin's Dayton data, we estimate the home's value is $779,403.
Single-familyProperty Type
1973Year Built
5 acresLot Size
$300Est. Price/Sq.Ft.
Source:Public Records
Redfin Estimate
$779,403
$762K since sold in June 1993$49K since October
Recently sold homes
Estimate history
Homes for sale
This home's estimate is 5.3% lower than the average sale price ($823K) of 6 comparable homes.
Claim this home to receive a free report every month with insights on the changing estimate.
Earn from this home
Sell
$732,581
Est. take-home
List your home with Redfin and save $7,794
Refinance
$0
Est. cash available
Get cash now or lower your monthly rate
Market trends in 21036, MD
Last updated October 2026
Buyer's Market
Seller's Market
Seller's market
Sale-to-list price
96.7%
+0.9% MoM
Median sale price
$1.4M
$97K MoM
Avg. days on market
50d
20 days MoM
Recently sold homes
6
1 MoM
Provided by Redfin
Sale history for 14590 Triadelphia Mill Rd
Date
Event
Price
Public Records
Jun 23, 1993
Sold
$17,071
$7/sq ft
Public Records
Jun 30, 1986
Sold
$17,071
$7/sq ft
Year
Property tax
Land + Additions
Assessment*
2026
$8,392 (+5.0%)
2025
$7,991 (+4.6%)
2024
$7,637 (+6.5%)
$311,200 + $347,100
$658,300
2023
$7,171 (+3.9%)
2022
$6,903 (+2.9%)
2021
$6,707 (+3.8%)
$300,000 + $249,200
$549,200
2020
$6,462 (+85.2%)
2019
$3,489 (−49.3%)
2018
$6,883 (+0.4%)
$297,500 + $203,500
$501,000
2017
$6,858 (+0.3%)
$297,500 + $203,500
$501,000
2015
$6,839 (−7.7%)
$297,500 + $207,100
$504,600
2014
$7,410 (+2.4%)
$297,500 + $250,900
$548,400
2013
$7,233 (+8.9%)
2012
$6,640 (−0.5%)
2011
$6,676 (+5.6%)
2010
$6,319 (+25.1%)
2009
$5,052
Tax history for 14590 Triadelphia Mill Rd
Year
Property tax
Land + Additions
Assessment*
2026
$8,392 (+5.0%)
2025
$7,991 (+4.6%)
2024
$7,637 (+6.5%)
$311,200 + $347,100
$658,300
2023
$7,171 (+3.9%)
2022
$6,903 (+2.9%)
2021
$6,707 (+3.8%)
$300,000 + $249,200
$549,200
2020
$6,462 (+85.2%)
2019
$3,489 (−49.3%)
2018
$6,883 (+0.4%)
$297,500 + $203,500
$501,000
2017
$6,858 (+0.3%)
$297,500 + $203,500
$501,000
2015
$6,839 (−7.7%)
$297,500 + $207,100
$504,600
2014
$7,410 (+2.4%)
$297,500 + $250,900
$548,400
2013
$7,233 (+8.9%)
2012
$6,640 (−0.5%)
2011
$6,676 (+5.6%)
2010
$6,319 (+25.1%)
2009
$5,052
*Taxable value of land and structures on it ("additions") is determined regularly by local assessors and does not affect market price.
Zoning
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
Interior
Bathroom Information
# of Full Baths: 3
# of 1/2 Baths: 1
Heating & Cooling
Air Conditioning Type: Split System
Heating Type: Hot Air
Fireplace Information
# of Fireplaces: 1
Fireplace Type: 2 Story Brick
Has Fireplace
Exterior
Exterior Information
Building Construction Quality: Average
Exterior Wall: Frame
Building Type: Single Family
Pool Information
Pool Type: Concrete
Has Pool
Property Information
Living Sq. Ft: 2,598
Building Sq. Ft: 3,082
# of Stories: 2
Stories Type: 2 Story With Basement
Legal Description: LOT 5 PAR 19 5.000 14590 TRIADELPHIA MILL R DAYTON
Parking & Garage Information
Parking Type: Attached Frame Garage
Garage/Parking Sq. Ft: 484
Garage / Carport Type: Attached Frame
Lot Information
# of Buildings: 1
Land Sq. Ft: 217,800
Legal Lot Number: 5
Acres: 5
Zoning Code: RRDEO
State Use Description: RESIDENTIAL
Utility Information
Sewer Type: Private
Water Service Type: Private
Financial
Assessor Information
Assessment Year: 2026
Tax District County: 05
Public facts
Beds: —
Baths: 3.5
Sq. Ft.: 2,598
Stories: 2.0
Lot Size: 5 acres
Style: Single Family Residential
Year Built: 1973
Year Renovated: —
County: Howard County
APN: 05 371791
Home facts updated by county records on Sep 4, 2026
Around this home
Schools
K - 12
Preschool & daycare
Dayton Oaks Elementary School
Public PreK-5 • Assigned • 2.2mi
9/10
Folly Quarter Middle School
Public 6-8 • Assigned • 3.2mi
9/10
Glenelg High School
Public 9-12 • Assigned • 3.2mi
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
2/10 Fire Factor
0.00% chance of being in a wildfire in next 30 years
6/10 Heat Factor
7 days above 102° expected this year, 15 days in 30 years
4/10 Wind Factor
15% chance of strong winds in next 30 years
4/10 Air Factor
5 unhealthy days expected this year, 6 days in 30 years
Provided by First Street
Historical weather
Dayton, MD • 21036
Average low and high temperatures (°F)
36°
22°
42°
27°
60°
38°
68°
48°
72°
55°
82°
64°
86°
69°
79°
61°
77°
59°
65°
46°
56°
39°
42°
28°
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 4.2 hours in December, placing it below the
U.S. average for solar exposure.
9.2 hrs
4.2 hrs
JuneDecember
Provided by Shadowmap
Estimated sale price
$741,000 – $897,000
Reach more buyers when you sell with Redfin. Save up to $7,794 in fees.3 minutes to get started.
Get a free, detailed breakdown of how we calculated your estimate.