A rare opportunity to own The Gaddy House, a thoughtfully designed Clarksville residence recognized for its forward-thinking sustainable design and exceptional energy performance. Built as a high-performance custom home, this property was intentionally engineered to achieve net-zero living, combining advanced building science with comfort, durability, and modern livability. Designed to meet LEED Platinum and Passive House standards, the home offers outstanding energy efficiency, superior indoor air quality, and year-round comfort. A carefully constructed building envelope, high-performance windows, and precision mechanical systems work together to reduce energy consumption while creating a quiet living environment filled with natural light. The home has been featured in multiple articles and case studies for its innovative approach to sustainable residential design. The layout balances open, functional spaces with a strong connection to the surrounding landscape, reinforcing the home’s focus on intentional living. Set along Old Hopkins Road in sought-after Clarksville, this property delivers a unique blend of innovation, environmental responsibility, and everyday comfort—ideal for buyers seeking a home that stands apart for both its design and performance. Wheelchair accessible through the garage.
For sale
$825,000
11232 Old Hopkins Rd, Clarksville, MD 21029
3beds
2,176sqft
Est.:
Single Family Residence
Built in 2014
1.22 Acres Lot
$812,000 Zestimate®
$379/sqft
$-- HOA
What's special
Carefully constructed building envelopeSuperior indoor air qualityPrecision mechanical systemsHigh-performance windowsYear-round comfortOpen functional spaces
- 14 hours |
- 843 |
- 42 |
Zillow last checked: 8 hours ago
Listing updated: January 29, 2026 at 04:10pm
Listed by:
Gary Ahrens 410-978-6541,
Keller Williams Realty Centre 4103120000
Source: Bright MLS,MLS#: MDHW2063360
Tour with a local agent
Facts & features
Interior
Bedrooms & bathrooms
- Bedrooms: 3
- Bathrooms: 2
- Full bathrooms: 2
- Main level bathrooms: 2
- Main level bedrooms: 3
Rooms
- Room types: Living Room, Dining Room, Primary Bedroom, Bedroom 2, Bedroom 3, Kitchen, Laundry, Bathroom 2, Primary Bathroom
Primary bedroom
- Features: Flooring - Ceramic Tile
- Level: Main
Bedroom 2
- Features: Flooring - Ceramic Tile
- Level: Main
Bedroom 3
- Features: Flooring - Ceramic Tile
- Level: Main
Primary bathroom
- Features: Flooring - Ceramic Tile, Bathroom - Walk-In Shower
- Level: Main
Bathroom 2
- Features: Flooring - Ceramic Tile
- Level: Main
Dining room
- Features: Flooring - Ceramic Tile
- Level: Main
Kitchen
- Features: Flooring - Ceramic Tile
- Level: Main
Laundry
- Features: Flooring - Ceramic Tile
- Level: Main
Living room
- Features: Flooring - Ceramic Tile
- Level: Main
Heating
- Heat Pump, Electric
Cooling
- Central Air, Ceiling Fan(s), Ductless, Electric
Appliances
- Included: Dishwasher, Energy Efficient Appliances, Microwave, Oven/Range - Electric, Refrigerator, Stainless Steel Appliance(s), Washer, Dryer, Electric Water Heater
- Laundry: Main Level, Laundry Room
Features
- Ceiling Fan(s), Combination Dining/Living, Combination Kitchen/Dining, Combination Kitchen/Living, Open Floorplan, Kitchen - Gourmet, Kitchen Island, Pantry, Primary Bath(s), Recessed Lighting, Upgraded Countertops, Walk-In Closet(s), Dry Wall, 9'+ Ceilings
- Doors: ENERGY STAR Qualified Doors, Insulated
- Windows: Triple Pane Windows
- Has basement: No
- Has fireplace: No
Interior area
- Total structure area: 2,176
- Total interior livable area: 2,176 sqft
- Finished area above ground: 2,176
- Finished area below ground: 0
Video & virtual tour
Property
Parking
- Total spaces: 6
- Parking features: Storage, Garage Door Opener, Concrete, Circular Driveway, Electric Vehicle Charging Station(s), Detached, Driveway
- Garage spaces: 2
- Uncovered spaces: 4
- Details: Garage Sqft: 699
Accessibility
- Accessibility features: None
Features
- Levels: One
- Stories: 1
- Patio & porch: Patio
- Exterior features: Rain Gutters
- Pool features: None
- Has view: Yes
- View description: Garden
Lot
- Size: 1.22 Acres
- Features: Suburban
Details
- Additional structures: Above Grade, Below Grade, Outbuilding
- Parcel number: 1405365376
- Zoning: RRDEO
- Special conditions: Standard
Construction
Type & style
- Home type: SingleFamily
- Architectural style: Contemporary
- Property subtype: Single Family Residence
Materials
- Advanced Framing, Batts Insulation, Blown-In Insulation, Frame, Rigid Insulation, Spray Foam Insulation, Stick Built, Block
- Foundation: Slab
- Roof: Metal
Condition
- Excellent
- New construction: No
- Year built: 2014
Details
- Builder name: Mautaz Ezzat, Maryland Custom Builders, Inc
Utilities & green energy
- Electric: 200+ Amp Service
- Sewer: Septic Exists
- Water: Cistern, Public
Green energy
- Energy efficient items: Appliances, Construction, Home Energy Management, HVAC, Lighting
- Energy generation: PV Solar Array(s) Owned
- Indoor air quality: Ventilation
- Construction elements: Conserving Materials/Methods
- Water conservation: Efficient Hot Water Distribution, Green Infrastructure, Low-Flow Fixtures, Water-Smart Landscaping
Community & HOA
Community
- Subdivision: Clarksville Hunt
HOA
- Has HOA: No
Location
- Region: Clarksville
Financial & listing details
- Price per square foot: $379/sqft
- Tax assessed value: $634,700
- Annual tax amount: $8,108
- Date on market: 1/30/2026
- Listing agreement: Exclusive Right To Sell
- Inclusions: Water Treatment System, Solar Panels, Ev Charger.
- Ownership: Fee Simple
- Road surface type: Black Top
Estimated market value
$812,000
$771,000 - $853,000
$3,548/mo
Price history
Price history
| Date | Event | Price |
|---|---|---|
| 1/30/2026 | Listed for sale | $825,000+111.5%$379/sqft |
Source:  Bright MLS #MDHW2063360 Report a problem | ||
| 10/26/2010 | Sold | $390,000$179/sqft |
Source: Public Record Report a problem | ||
Public tax history
Public tax history
| Year | Property taxes | Tax assessment |
|---|---|---|
| 2025 | -- | $634,700 +3.7% |
| 2024 | $6,893 +3.8% | $612,167 +3.8% |
| 2023 | $6,639 +4% | $589,633 +4% |
Find assessor info on the county website
BuyAbility℠ payment
Est. payment
$4,969/mo
Principal & interest
$3924
Property taxes
$756
Home insurance
$289
Climate risks
Neighborhood: 21029
Nearby schools
GreatSchools rating
- 8/10Pointers Run Elementary SchoolGrades: PK-5Distance: 2.1 mi
- 9/10Lime Kiln Middle SchoolGrades: 6-8Distance: 1 mi
- 7/10Reservoir High SchoolGrades: 9-12Distance: 1.2 mi
Schools provided by the listing agent
- Middle: Lime Kiln
- District: Howard County Public Schools
Source: Bright MLS. This data may not be complete. We recommend contacting the local school district to confirm school assignments for this home.
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