643 Mapleton Ave

Boulder, CO 80304

$5,395,000
Price
4
Beds
3,926 Sq. Ft.
$1,374 / Sq. Ft.
3,926
Sq. Ft.
$1,374
per Sq. Ft.
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Listed By CompassVirtual Tour
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a large kitchen with stainless steel appliances granite countertop a sink and cabinets
a kitchen with stainless steel appliances granite countertop a stove and a microwave
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a living room with furniture a fireplace and a flat screen tv
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Description

Seller Financing Available. The beautifully preserved past meets the exciting present in this carefully updated and diligently maintained historic Mapleton Hill home. This fine Boulder 4BD/3BA landmark awaits its next generation of lucky residents with an expansive modernized layout, a wealth of original and period-appropriate architectural details, and phenomenal poolside outdoor space. Built in 1895, The Law House is a Gothic Revival masterpiece built from stone quarried from Mt. Sanitas. Inside,...Seller Financing Available. The beautifully preserved past meets the exciting present in this carefully updated and diligently maintained historic Mapleton Hill home. This fine Boulder 4BD/3BA landmark awaits its next generation of lucky residents with an expansive modernized layout, a wealth of original and period-appropriate architectural details, and phenomenal poolside outdoor space. Built in 1895, The Law House is a Gothic Revival masterpiece built from stone quarried from Mt. Sanitas. Inside, you'll find tall tin ceilings, original fir floors, stained glass windows and exceptional millwork paired with thoughtfully selected lighting, windows and doors, Cleveland Art and Antiques handblown light fixtures and Sonos speakers. A charming covered porch and gracious foyer open to a sun-kissed layout perfect for peaceful relaxation and lavish entertaining, including a fireplace living room, elegant formal dining room and a stately library with breathtaking woodwork, a Murphy bed and a hidden passageway to both the lower and upper levels. The open gourmet kitchen boasts a skylight, custom cabinetry, honed raw-edge Australian granite and upscale appliances, while an adjacent guest bath and laundry room add convenience. Grill masters will love the large deck's Lynx summer kitchen. Below, the newer saltwater jetted pool spa is surrounded by manicured gardens and tall trees for optimal privacy. A handsome fir staircase leads to the upper-level private quarters, including a luxurious owner's suite with a spa bath and walk-in closet. Two secondary bedrooms & a full bath complete the top floor, while the walkout basement provides a vast footprint for media room, home gym & game room use. Completely remodeled in 2006, the home includes upper-level HVAC and mini-split/radiant heat on the main and lower levels. Plans are available for a primary bathroom and closet remodel and a basement expansion with a depth increase. Coveted Mapleton Hill Historic District close to EVERYTHING.

Property Details for 643 Mapleton Avenue

Locale
Boulder
Description 1
House
LISTING UPDATED: 11/12/2025 03:22 PM

Property Details for 643 Mapleton Avenue

StatusActive
MLS #1044438
Days on Compass158
Taxes$18,826 / year
HOA Fees-
Condo/Co-op Fees-
Compass TypeSingle Family
MLS TypeResidential / Single Family Residence
Year Built1900
Lot Size0.15 AC / 6,534 SF
CountyBoulder County
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Location

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Building Information for 643 Mapleton Avenue

Stories-Year Built1900Building Size-Lot Size0.15 AC / 6,534 SF

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$27,863 per month

30 year fixed, 6.15% Interest

Principal and Interest

$26,294

Property Taxes

$1,569

HOA Dues

$0

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Property Information for 643 Mapleton Avenue

Summary
Location and General Information
  • Road Access 2: City Street
  • Latitude: 40.02
  • Longitude: -105.29
Parking
  • Garage SqFt: 351
  • Total Parking: 2.00
  • Parking Features: Garage Door Opener
Taxes and HOA Information
  • Has HOA: No
  • HOA Fee: $.00
  • Legal Description: S 3/4 LOTS 33-34 BLK 3 MAPLETON
  • Tax Information: No
  • HOA2 Fee Amount: $0
  • Tax Year: 2024
  • HOA Transfer Fee: No
  • HOA 2 Transfer Fee: No
  • Has Association Fee: No
  • Has Association 2 Fee: No
  • Has Association Reserve: No
  • Has Association 2 Reserve: No
  • Tax Annual Amount: $18,826
  • Parcel Number: R0008802
Property
Lot Information
  • Lot Improvements: Corner Lot, Wooded, Level, Historic District, House Faces South, Paved, Sidewalks
  • Lot Size Area: 6,332.00
  • Has Irrigation Water Rights: No
  • Has Improvements: No
  • Vegetation: Wooded
Property and Assessments
  • Total Finished Area Source: Other
  • Living SqFt: 3239
  • Above Grade Finished Area Source: 3239
  • Sq Ft Apx: 687
  • Total Finished Area: 3239
  • Pano Url Position: 1
  • Are Ditches Active: No
  • Security Features: Fire Alarm
  • New Construction YN: No
  • Levels: Two
Utilities
  • Electric: Xcel
  • Sewer: Public Sewer
Interior and Exterior Features
Exterior Features
  • Construction Materials: Stone, Wood Shingle
  • Exterior Features: Sprinkler System
  • Flooring: Wood
  • Outdoor Features: Private
Interior Features
  • Interior Features: Eat-in Kitchen, Separate Dining Room, Cathedral Ceiling(s), Open Floorplan, Wood Windows, Bay or Bow Window, Walk-In Closet(s), Wet Bar, Washer/Dryer Hookup, Skylights, Kitchen Island, Steam Shower, High Ceilings, Beamed Ceilings, Crown Molding, Luxury Features Primary Bath
  • Laundry Features: Gas Range, Self Cleaning Oven, Dishwasher, Refrigerator, Bar Fridge, Washer, Dryer, Freezer, Gas Bar-B-Q, Disposal, Fire Alarm
  • Window Features: Skylight(s), Window Coverings
  • Fireplaces 1: Free Standing, Two or More, Gas, Living Room, Basement
  • All Bedrooms Conform: Yes
  • Full Bathrooms: 2
  • Half Bathrooms: 0
  • Rough-in Bathrooms: 0
  • Three Quarters Bathrooms: 1
  • Baths Full Additional: 0
  • Baths Full Basement: 0
  • Baths Full Upper: 2
  • Baths Full Main: 0
  • Baths Full Lower: 0
  • Baths Half Additional: 0
  • Baths Half Basement: 0
  • Baths Half Upper: 0
  • Baths Half Main: 0
  • Baths Half Lower: 0
  • Baths Three Quarters Additional: 0
  • Baths Three Quarters Basement: 0
  • Baths Three Quarters Lower: 0
  • Baths Three Quarters Upper: 0
  • Baths Three Quarters Main: 1
Room Information
Room 1
  • RoomDescription: Wood
  • RoomLength: 12.0
  • RoomLevel: Upper
  • RoomType: Bedroom 2
  • RoomWidth: 12.0
Room 2
  • RoomDescription: Wood
  • RoomLength: 15.0
  • RoomLevel: Upper
  • RoomType: Bedroom 3
  • RoomWidth: 16.0
Room 3
  • RoomDescription: Wood
  • RoomLength: 12.0
  • RoomLevel: Main
  • RoomType: Bedroom 4
  • RoomWidth: 15.0
Room 4
  • RoomDescription: Wood
  • RoomLength: 12.0
  • RoomLevel: Main
  • RoomType: Dining Room
  • RoomWidth: 15.0
Room 5
  • RoomDescription: Wood
  • RoomLength: 19.0
  • RoomLevel: Main
  • RoomType: Kitchen
  • RoomWidth: 16.0
Room 6
  • RoomDescription: Wood
  • RoomLength: 7.0
  • RoomLevel: Main
  • RoomType: Laundry
  • RoomWidth: 7.0
Room 7
  • RoomDescription: Wood
  • RoomLength: 17.0
  • RoomLevel: Main
  • RoomType: Living Room
  • RoomWidth: 16.0
Room 8
  • RoomDescription: Wood
  • RoomLength: 14.0
  • RoomLevel: Upper
  • RoomType: Primary Bedroom
  • RoomWidth: 16.0
  • Room Features: Luxury Features Primary Bath
Room 9
  • RoomLength: 19.0
  • RoomType: Recreation Room
  • RoomWidth: 25.0
Room 10
  • RoomDescription: Wood
  • RoomLength: 12.0
  • RoomLevel: Main
  • RoomType: Study
  • RoomWidth: 15.0
Rental
Rental Information
  • Horse YN: No
  • Occupant Type: Owner

Property History for 643 Mapleton Avenue

DateEvent & SourcePriceAppreciation
Jan 5, 2006

Sold (Public Record)

Public Record #172482997

$1,167,500—
DateEvent & SourcePrice
01/05/2006

Sold (Public Record)

Public Record #172482997

$1,167,500

For completeness, Compass often displays two records for one sale: the MLS record and the public record.

Public Records for 643 Mapleton Avenue

Taxable ValueLand$97,813Additions$103,738Total$201,551
Tax Record2025$19,218 ($1,601 / month)
Home Facts
Beds4Baths2.8Total Finished SqFt3,239 SqFtAbove Grade Finished SqFt3,239 SqFtUnfinished Basement SqFt687 SqFtStories2Lot Size6,316 SqFtStyleSingle Family ResidenceYear Built1900Year Renovated1995Zoning1112CountyBOULDERAPN1461-25-4-04-002

Schools near 643 Mapleton Avenue

This home is within Boulder Valley Re 2 School District.
Rating
School
Type
Grades
Distance
Whittier Elementary School
Public - K to 5
Casey Middle School
Public - 6 to 8
Boulder High School
Public - 9 to 12
University Hill Elementary School
Public - PK to 5
Rating
School
Distance
Whittier Elementary School
PublicK to 5

Casey Middle School
Public6 to 8

Boulder High School
Public9 to 12

University Hill Elementary School
PublicPK to 5

School ratings and boundaries are provided by GreatSchools.org and Pitney Bowes. This information should only be used as a reference. Proximity or boundaries shown here are not a guarantee of enrollment. Please reach out to schools directly to verify all information and enrollment eligibility.

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More information about 643 Mapleton Avenue, Boulder, CO 80304

643 Mapleton Avenue is a single family home for sale in Boulder, CO 80304. This property was listed for sale on September 25, 2025 by Compass, it's currently listed at $5,395,000. It has been on the market for a total of 158 days and was last sold on January 5, 2006. This listing's school district is Boulder Valley Re 2 School District. Nearby schools include Whittier Elementary School, Casey Middle School and Boulder High School. 643 Mapleton Avenue is a 4-bed, 3-bath, 3,926 sqft single family home built in 1900.

No guarantee, warranty or representation of any kind is made regarding the completeness or accuracy of descriptions or measurements (including square footage measurements and property condition), such should be independently verified, and Compass, Inc., its subsidiaries, affiliates and their agents and associated third parties expressly disclaims any liability in connection therewith. Photos may be virtually staged or digitally enhanced and may not reflect actual property conditions. Offers of compensation are subject to change at the discretion of the seller. No financial or legal advice provided. Equal Housing Opportunity. Subject to change at any time. Compass makes no guarantee, warranty or representation regarding the accuracy of any waterfront feature, water view or waterfront view.

Based on information submitted to the MLS GRID as of 11/12/2025 03:22 PM. All data is obtained from various sources and may not have been verified by broker or MLS GRID. Supplied Open House Information is subject to change without notice. All information should be independently reviewed and verified for accuracy. Properties may or may not be listed by the office/agent presenting the information. Properties displayed may be listed or sold by various participants in the MLS. IDX 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. The data is deemed reliable but is not guaranteed by MLS GRID. Use of the MLS GRID data may be subject to an end user license agreement prescribed by the applicable MLS of the Member Participant, if any, and as amended from time to time.