Downtown Boulder base camp, the backdoor of Mt. Sanitas Trailhead and the heart of Boulder's Porchfest, Mapleton Garden Tour and all Sundance festivities. Front and center for Boulder's new cultural hub on the horizon. Step into a storybook setting with this iconic Boulder landmark of rare pedigree. Gracefully positioned on an expansive 10,542 sq. ft. corner lot, the property is enveloped by lush, mature landscaping, privacy & tranquility all while feeling connected the vibrance of this special block. A classic wraparound porch captures sweeping Flatirons views, while curated outdoor spaces - including a serene backyard yoga deck - offer an effortless balance of relaxation & refined entertaining. Inside, a welcoming foyer and elegant formal parlor set the tone, flowing seamlessly into gracious living & dining spaces designed for both intimate gatherings and grand occasions. The gourmet kitchen serves as the heart of the home, appointed with Italian marble, rich cherry hardwood cabinetry, a JennAir gas range, and a bespoke walnut breakfast table- where craftsmanship and functionality meet in perfect harmony. Upstairs, soaring ceilings and abundant natural light illuminate four spacious bedrooms, including a luxurious primary suite featuring a marble-clad ensuite bath. A secondary bath offers a spa-inspired escape, complete with an aromatherapy steam room and a timeless clawfoot soaking tub. Thoughtfully refreshed with new designer lighting, upgraded appliances, and refined kitchen and bathroom finishes. The front patio showcases beautifully refinished flooring, behind the home a new garage roof & door and meticulous exterior touch-ups. Ideally situated on one of Boulder's most coveted streets, welcome to the Casaday-Winter House. An irreplaceable piece of Boulder's heritage, where historic character and modern sophistication converge. For your convenience, all furnishings available.
For sale
Price cut: $50K (5/26)
$4,345,000
505 Pine St, Boulder, CO 80302
4beds
3,296sqft
Single Family Residence
Built in 1893
10,541 Square Feet Lot
$4,048,200 Zestimate®
$1,318/sqft
$-- HOA
What's special
Italian marbleNew designer lightingSweeping flatirons viewsClassic wraparound porchSerene backyard yoga deckLuxurious primary suiteLush mature landscaping
- 81 days |
- 972 |
- 35 |
Zillow last checked:
Listing updated:
Listed by:
Amy LaBorde 720-771-8271,
Compass - Boulder
Source: IRES as distributed by MLS GRID,MLS#: 1056413
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Facts & features
Interior
Bedrooms & bathrooms
- Bedrooms: 4
- Bathrooms: 3
- Full bathrooms: 1
- 3/4 bathrooms: 1
- 1/2 bathrooms: 1
- Main level bathrooms: 1
Primary bedroom
- Description: Wood
- Features: 3/4 Primary Bath
- Level: Upper
- Area: 1 Square Feet
- Dimensions: 1 x 1
Bedroom 2
- Description: Wood
- Level: Upper
Bedroom 3
- Description: Wood
- Level: Upper
Bedroom 4
- Description: Wood
- Level: Upper
Dining room
- Description: Wood
- Level: Main
Kitchen
- Description: Wood
- Level: Main
- Area: 1 Square Feet
- Dimensions: 1 x 1
Laundry
- Description: Luxury Vinyl
- Level: Basement
Living room
- Description: Wood
- Level: Main
Study
- Description: Wood
- Level: Upper
Heating
- Forced Air
Cooling
- Central Air
Appliances
- Included: Gas Range, Dishwasher, Refrigerator, Washer, Dryer
Features
- Eat-in Kitchen, Separate Dining Room, Cathedral Ceiling(s)
- Flooring: Wood
- Basement: Partially Finished
- Has fireplace: Yes
- Fireplace features: Gas
Interior area
- Total structure area: 2,652
- Total interior livable area: 3,296 sqft
- Finished area above ground: 2,652
Property
Parking
- Total spaces: 1
- Parking features: Detached
- Garage spaces: 1
- Details: Detached
Features
- Levels: Three Or More
- Stories: 3
- Patio & porch: Patio, Deck
- Exterior features: Sprinkler System
- Fencing: Partial
- Has view: Yes
- View description: Mountain(s), Hills
Lot
- Size: 10,541 Square Feet
- Features: Corner Lot, Evergreen Trees, Historic District
Details
- Additional structures: Storage
- Parcel number: R0009008
- Zoning: RES
- Special conditions: Private Owner
Construction
Type & style
- Home type: SingleFamily
- Architectural style: Victorian
- Property subtype: Single Family Residence
Materials
- Stone
- Roof: Composition
Condition
- New construction: No
- Year built: 1893
Utilities & green energy
- Electric: Xcel
- Gas: Xcel
- Sewer: Public Sewer
- Water: City
- Utilities for property: Natural Gas Available
Community & HOA
Community
- Subdivision: Mapleton
HOA
- Has HOA: No
Location
- Region: Boulder
Financial & listing details
- Price per square foot: $1,318/sqft
- Tax assessed value: $2,631,300
- Annual tax amount: $15,681
- Date on market: 4/14/2026
- Listing terms: Cash,Conventional
- Exclusions: Seller's property in basement and garage.
- Road surface type: Asphalt
Estimated market value
$4,048,200
$3.85M - $4.25M
$7,163/mo
Price history
| Date | Event | Price |
|---|---|---|
| 5/26/2026 | Price change | $4,345,000-1.1%$1,318/sqft |
Source:  IRES as distributed by MLS GRID #1056413 Report a problem | ||
| 4/14/2026 | Listed for sale | $4,395,000$1,333/sqft |
Source: IRES as distributed by MLS GRID #1056413 Report a problem | ||
| 1/8/2026 | Listing removed | $4,395,000$1,333/sqft |
Source: IRES as distributed by MLS GRID #1042978 Report a problem | ||
| 10/21/2025 | Price change | $4,395,000-2.2%$1,333/sqft |
Source: IRES as distributed by MLS GRID #1042978 Report a problem | ||
| 9/5/2025 | Price change | $4,495,000-2.3%$1,364/sqft |
Source: IRES as distributed by MLS GRID #1042978 Report a problem | ||
| 6/19/2025 | Listed for sale | $4,600,000+206.7%$1,396/sqft |
Source: IRES as distributed by MLS GRID #1037145 Report a problem | ||
| 3/24/2021 | Listing removed | -- |
Source: Owner Report a problem | ||
| 8/13/2017 | Listing removed | $4,880$1/sqft |
Source: Owner Report a problem | ||
| 8/6/2017 | Listed for rent | $4,880$1/sqft |
Source: Owner Report a problem | ||
| 7/18/2013 | Sold | $1,500,000$455/sqft |
Source: Public Record Report a problem | ||
Public tax history
| Year | Property taxes | Tax assessment |
|---|---|---|
| 2025 | $15,404 +1.8% | $164,456 -8.1% |
| 2024 | $15,136 +9.4% | $178,957 -1% |
| 2023 | $13,832 +4.9% | $180,693 +21.3% |
| 2022 | $13,190 +5.3% | $148,953 -2.8% |
| 2021 | $12,522 | $153,239 +6.5% |
| 2020 | $12,522 +10.6% | $143,851 |
| 2019 | $11,317 | $143,851 +10.2% |
| 2018 | $11,317 | $130,529 -9.5% |
| 2017 | $11,317 +19.1% | $144,307 +31.5% |
| 2016 | $9,502 +5.6% | $109,768 +13.2% |
| 2015 | $8,998 +20.2% | $96,993 |
| 2014 | $7,486 +0.2% | $96,993 |
| 2013 | $7,468 -7.4% | $96,993 -0.1% |
| 2012 | $8,064 +3.4% | $97,112 |
| 2011 | $7,800 +7.1% | -- |
| 2010 | $7,284 -3.6% | $96,510 |
| 2009 | $7,556 +3.5% | $96,510 -24.2% |
| 2008 | $7,299 +43.4% | $127,250 |
| 2007 | $5,090 -6.8% | $127,250 +43.3% |
| 2006 | $5,464 +8.6% | $88,800 |
| 2005 | $5,032 +0.7% | $88,800 +7.8% |
| 2004 | $4,996 +19.3% | $82,350 |
| 2003 | $4,186 -4.3% | $82,350 +19.1% |
| 2002 | $4,373 | $69,150 -90.8% |
| 2001 | -- | $755,700 |
Find assessor info on the county website
Monthly payment
Est. payment$--/mo
Payment breakdown
Explore the cost of this home by adjusting the details. Changes won't be saved.All calculations are estimates and provided by Zillow, Inc. for informational purposes only. Actual amounts may vary.
HOA fees may include property taxes on listings classified as Co-Ops. Contact the listing agent and/or owner for fee details.
Mortgage interest rates are dependent on a number of factors, including credit score, down payment, and repayment length. Interest rate data provided by Zillow Group Marketplace, Inc. as of 1/1/1970 from various mortgage lenders with which we have lead or other similar arrangements; the Estimated Payment is an average of those rates.
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Climate risks
Neighborhood: Mapleton Hill
Nearby schools
GreatSchools rating
- 8/10Whittier Elementary SchoolGrades: K-5Distance: 1.1 mi
- 5/10Casey Middle SchoolGrades: 6-8Distance: 0.6 mi
- 10/10Boulder High SchoolGrades: 9-12Distance: 0.8 mi
Schools provided by the listing agent
- Elementary: Whittier
- Middle: Casey
- High: Boulder
Source: IRES as distributed by MLS GRID. This data may not be complete. We recommend contacting the local school district to confirm school assignments for this home.
A local agent can set up tours, give advice and negotiate with sellers.
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