503 Kalmia Ave Boulder, CO 80304
Newlands NeighborhoodEstimated payment $23,478/month
Highlights
- Parking available for a boat
- Home Theater
- 0.57 Acre Lot
- Foothill Elementary School Rated A
- Waterfall on Lot
- Open Floorplan
About This Home
Open House on Saturday (9/20) from 10-11 AM! Behind a dramatic illuminated gate on a lush 0.57-acre lot, this architecturally refined residence was remodeled by renowned architect Harvey Hine and embodies the pinnacle of modern luxury and design. A striking wood exterior, standing seam metal roof, and grand slate patio set the tone for the sophisticated living experience within. Enter through an oversized pivoting wood door into a sun-drenched great room with soaring vaulted ceilings, a statement fireplace, and warm maple hardwood flooring. Walls of glass frame the open-concept living space, seamlessly connecting to an expansive rear deck-an entertainer's dream. The chef's kitchen features custom cabinetry, waterfall stone island, tile backsplash, walk-in pantry, a Wolf range, and a Sub-Zero refrigerator-offering both form and function in equal measure. A cozy library lounge leads to a versatile home office or fifth bedroom with direct access to the front patio. The main-level primary suite is a private retreat with a generous walk-in closet and a spa-inspired en suite bathroom. On the lower level, a fully finished space includes a media room, fitness area, and guest suite-perfect for everyday living or hosting visitors. The beautifully landscaped grounds are surrounded by 40-50' evergreens and enhanced by natural boulders, stone patios, a seasonal ditch, water feature, and multiple serene seating areas. A bonus heated studio offers flexible use as a gym, art studio, or private office. Additional highlights include an attached two-car garage, ample guest parking, and a show stopping gated driveway. Located in the coveted Newlands neighborhood with close proximity to North Boulder shops, downtown, open space, hiking trails, and top-rated schools, this extraordinary home offers the ultimate blend of luxury, privacy, and convenience. Be sure to view the virtual tour and listing video-this one is not to be missed.
Home Details
Home Type
- Single Family
Est. Annual Taxes
- $28,250
Year Built
- Built in 1978
Lot Details
- 0.57 Acre Lot
- Fenced
- Level Lot
- Sprinkler System
- Landscaped with Trees
Parking
- 2 Car Attached Garage
- Oversized Parking
- Garage Door Opener
- Parking available for a boat
Home Design
- Contemporary Architecture
- Wood Frame Construction
- Metal Roof
Interior Spaces
- 5,381 Sq Ft Home
- 1-Story Property
- Open Floorplan
- Cathedral Ceiling
- Ceiling Fan
- Gas Fireplace
- Double Pane Windows
- Window Treatments
- Family Room
- Living Room with Fireplace
- Dining Room
- Home Theater
- Basement Fills Entire Space Under The House
- Fire and Smoke Detector
Kitchen
- Eat-In Kitchen
- Walk-In Pantry
- Gas Oven or Range
- Microwave
- Dishwasher
- Wolf Appliances
- Kitchen Island
- Disposal
Flooring
- Wood
- Carpet
Bedrooms and Bathrooms
- 5 Bedrooms
- Walk-In Closet
- Primary bathroom on main floor
Laundry
- Laundry on main level
- Washer and Dryer Hookup
Outdoor Features
- Deck
- Patio
- Waterfall on Lot
- Separate Outdoor Workshop
- Outdoor Storage
Schools
- Foothill Elementary School
- Centennial Middle School
- Boulder High School
Utilities
- Forced Air Heating and Cooling System
- High Speed Internet
Community Details
- No Home Owners Association
- Foothills Subdivision
Listing and Financial Details
- Assessor Parcel Number R0077871
Map
Home Values in the Area
Average Home Value in this Area
Tax History
| Year | Tax Paid | Tax Assessment Tax Assessment Total Assessment is a certain percentage of the fair market value that is determined by local assessors to be the total taxable value of land and additions on the property. | Land | Improvement |
|---|---|---|---|---|
| 2025 | $28,250 | $289,982 | $170,769 | $119,213 |
| 2024 | $28,250 | $289,982 | $170,769 | $119,213 |
| 2023 | $27,760 | $321,446 | $189,262 | $135,869 |
| 2022 | $20,719 | $223,109 | $135,914 | $87,195 |
| 2021 | $19,757 | $229,529 | $139,825 | $89,704 |
| 2020 | $17,893 | $205,563 | $126,055 | $79,508 |
| 2019 | $17,619 | $205,563 | $126,055 | $79,508 |
| 2018 | $15,843 | $182,736 | $100,800 | $81,936 |
| 2017 | $15,347 | $202,025 | $111,440 | $90,585 |
| 2016 | $15,063 | $174,005 | $74,744 | $99,261 |
| 2015 | $14,264 | $135,320 | $59,700 | $75,620 |
| 2014 | $11,378 | $135,320 | $59,700 | $75,620 |
Property History
| Date | Event | Price | Change | Sq Ft Price |
|---|---|---|---|---|
| 08/12/2025 08/12/25 | Price Changed | $4,000,000 | -3.6% | $743 / Sq Ft |
| 07/23/2025 07/23/25 | For Sale | $4,150,000 | +37.2% | $771 / Sq Ft |
| 05/20/2020 05/20/20 | Off Market | $3,025,000 | -- | -- |
| 10/07/2019 10/07/19 | Off Market | $2,875,000 | -- | -- |
| 02/20/2019 02/20/19 | Sold | $3,025,000 | -4.0% | $592 / Sq Ft |
| 01/25/2019 01/25/19 | Pending | -- | -- | -- |
| 01/18/2019 01/18/19 | For Sale | $3,150,000 | +9.6% | $616 / Sq Ft |
| 07/09/2018 07/09/18 | Sold | $2,875,000 | -10.2% | $594 / Sq Ft |
| 06/09/2018 06/09/18 | Pending | -- | -- | -- |
| 02/20/2018 02/20/18 | For Sale | $3,200,000 | -- | $661 / Sq Ft |
Purchase History
| Date | Type | Sale Price | Title Company |
|---|---|---|---|
| Warranty Deed | $3,025,000 | First American Title | |
| Warranty Deed | $2,875,000 | Heritage Title Co | |
| Warranty Deed | $1,130,000 | None Available | |
| Warranty Deed | $1,130,000 | None Available | |
| Interfamily Deed Transfer | -- | None Available | |
| Warranty Deed | $1,145,000 | First Colorado Title | |
| Warranty Deed | $917,000 | Land Title Guarantee Company | |
| Interfamily Deed Transfer | -- | -- |
Mortgage History
| Date | Status | Loan Amount | Loan Type |
|---|---|---|---|
| Previous Owner | $1,000,000 | Commercial | |
| Previous Owner | $841,000 | New Conventional | |
| Previous Owner | $877,000 | New Conventional | |
| Previous Owner | $904,000 | New Conventional | |
| Previous Owner | $801,500 | Purchase Money Mortgage | |
| Previous Owner | $733,600 | New Conventional | |
| Previous Owner | $610,000 | Fannie Mae Freddie Mac |
Source: IRES MLS
MLS Number: 1039841
APN: 1461241-00-039
Disclaimer: Certain information contained herein is derived from information provided by parties other than Homes.com. All information provided is deemed reliable, but is not guaranteed to be accurate and should be independently verified.
Information source: Information and Real Estate Services, LLC. Provided for limited non-commercial use only under IRES Rules © Copyright IRES.
Listing information is provided exclusively for consumers' personal, non-commercial use and may not be used for any purpose other than to identify prospective properties consumers may be interested in purchasing.
Information deemed reliable but not guaranteed by the MLS.
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