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504 S Union St, Wilmington, DE, 19805

3beds
1baths
1,075sqft
$239,999
$223price/sqft
$1,691/moest. monthly cost
$67,640/yrincome needed

About This Home

Welcome to 504 South Union Street in historic Union Park Gardens, Wilmington, DE. This charming brick-and-stucco townhome captures the warm, inviting character of one of Wilmington’s most distinctive early-20th-century neighborhoods. Designed in 1918 by landscape architect John Nolen and architects Ballinger & Perrot as a garden suburb for World War I shipyard workers, Union Park Gardens features curving tree-lined streets, green spaces, and classic attached homes that still feel neighborly and residential today—while remaining just minutes from downtown Wilmington, I-95, shopping, dining, and major employers. Step up the brick stairs beneath a classic green scalloped awning to a cheerful green front door and covered porch. Inside, the home offers comfortable, updated living spaces with neutral walls, textured ceilings, and attractive flooring that flows throughout. The living room is bright and welcoming, with space for seating, a media wall, and an open flow toward the dining area. The dining room features a large wooden table under a stylish chandelier, a statement wall clock, and windows that look out toward the backyard—perfect for everyday meals or entertaining. The kitchen is practical and well-appointed with dark wood cabinetry, granite countertops, a mosaic-tile backsplash, stainless-steel range, and ample storage, plus convenient access toward the rear of the home. Upstairs you’ll find comfortable bedrooms with hardwood floors. One features a classic black iron bed frame and natural light; another offers a more formal feel with an ornate white headboard, coordinating furnishings, and good closet space. The full bathroom has been refreshed with white subway tile, a decorative mosaic accent band, a clean vanity/sink area, toilet, and tub/shower combination. The unfinished basement provides excellent storage, utility space, and potential for laundry or future finishing. Outside, enjoy a private fenced backyard with a concrete patio ready for outdoor dining (complete with table, chairs, umbrella, and grill), a grassy lawn, and a raised garden bed—ideal for relaxing or entertaining after a day in the city. Union Park Gardens is known for its strong sense of community, walkable streets, proximity to Bancroft Parkway green space, and convenient location near Little Italy, the riverfront, and major routes. Homes here blend historic charm with practical city living.

Getting Around

79
WalkingVery Walkable
42
TransitSome Transit
54
BikeBikeable

Schools

2/10
The Bayard SchoolGrades 1-80.3 mi
1/10
Glasgow High SchoolGrades 9-1211.8 mi

Construction

Condition

  • Year built: 1917

Materials

  • Foundation: Block
  • Construction materials: Brick,Stucco

Type & Style

  • Home type: Townhouse
  • Architectural style: Colonial
  • Property subType: Townhouse

Interior

Appliances

  • Appliances included: Gas Water Heater

Basement

  • Area: 0

Basement

  • Has basement: Yes
  • Basement: Unfinished

Bedrooms & Bathrooms

  • Bedrooms: 3
  • Bathrooms: 1
  • Full bathrooms: 1

Features

  • Finished area below ground: 0
  • Finished area above ground: 1,075

Heating & Cooling

  • Heating features: Forced Air,Natural Gas
  • Cooling features: Central Air,Natural Gas

Interior Area

  • Total structure area: 1,075
  • Total interior livable area: 1,075 sqft

Property

Accessibility

  • Accessibility features: None

Details

  • Parcel number: 26033.10320
  • Zoning: 26R-3
  • Special condition: Standard

Features

  • Levels: Two
  • Stories: 2
  • Pool features: None

Lot

  • Lot size: 1,742 sqft
  • Lot size dimensions: 18.00 x 100.00

Parking

  • Parking features: On Street
  • Has uncovered spaces: Yes

Climate Risk is Financial Risk

Every home has a financial story beyond the listing price. Below, you’ll see the climate risks that could affect this property — and in Bills & Affordability, how those risks may influence repairs, insurance, utilities, and long-term value.

Biggest Threats for This Home

  • Winter Weather
    Winter WeatherRelatively High
  • Cold Wave
    Cold WaveModerate
  • Tsunami
    TsunamiInsufficient Data

How This Home’s Risks Compare

Winter Weather
Cold Wave
Tsunami

FEMA Declared Disasters Across Delaware Counties

Understanding the Costs

Financial advisors generally recommend spending no more than 30% of your gross household income on housing costs. In practice, many households stretch to 35% or beyond — especially in high-cost markets.

Estimated Costs Today

MonthlyAnnual
Mortgage $1,213$14,556
Home Insurance *$84$1,008
Property Taxes $143$1,716
Electricity $251$3,021
Total$1,691$20,292
*Does not include cost of any FAIR Plan premiums

Income You'd Need if You Spent...

35% on housing$57,977/yr
40% on housing$50,730/yr
45% on housing$45,093/yr

Delaware FAIR Plan Programs

Insurance Placement Facility of Delaware

Covered
WildfireWildfire
Add-on available
HailHail
WindWind
Visit Website →
Current Policies
Residential: 1,170Commercial: 57
Total Premiums$607,000
Total Exposure$249.53M

How Costs Could Change Over Time

Climate risk is quickly impacting all of the major home ownership costs. Adjust the growth rates and percentage of income spent on housing below to see how your housing costs could change over the next 10 years — and what income you'd need to keep up.

Insurance Growth Rate5-year average: 7.0%
7.0%
0%30.0%
Electricity Growth Rate10-year average: 8.7%
8.7%
0%15.0%
Property Taxes Growth Rate2-year average: -0.8%
-0.8%
0%15.0%
Income Spent on Housing
30%
30%45%

Comparing Against the Market

Price Per Sq Ft

$223This listing

vs Other Active Listings

Avg $/sqft

ZIP 19805$112
New Castle County$172

vs Homes Sold Last Month

Median $/sqft

ZIP 19805$195
New Castle County$218

Current Market Trends

Median Price Per Square Foot

The median price per square foot of homes sold in this area each month. Compare this to this listing's price per square foot to gauge whether the home is priced in line with recent sales.

Historicals for This Listing

Zestimate History ($/sqft)

No zestimate history available

Price History

DateEventPrice
2026-08-13Pending sale$239,999
2026-07-30Listed for sale$239,999
2018-05-19Sold$135,000
2018-03-26Listed for sale$139,900
2013-02-28Sold$115,000
2012-12-07Price change$125,000
2012-11-07Price change$130,000
2012-10-04Price change$139,900
2012-09-20Price change$144,500
2012-07-31Listed for sale$149,500

For Sale by Agent

AgentRob Hoesterey
BrokerageCrown Homes Real Estate

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