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643 Mapleton AvenueBoulder, CO 80304

For Sale

$5,395,000

Smart Buyer Rebate $53,950

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.

Listed by Patrick Brown

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License #IRP28849

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Compass - Boulder

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303-242-6012

Last updated September 25, 2025

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Source: REcolorado #IR1044438

Listing Facts

  • TypeSingle-family
  • NeighborhoodMapleton Hill
  • Bedrooms4
  • Bathrooms3
  • Days on Prevu27
  • Taxes$18,826/year
  • Size3,239 sqft
  • Price per sqft$1,666

Amenities

  • Dishwasher
  • Private Outdoor Space
  • Washer/Dryer
  • Air Conditioning
  • Parking
  • Swimming Pool

Location

Mortgage Calculator

Listing History

09/25/2025
Listed by Compass - Boulder
$5,395,000

Property Details for 643 Mapleton Avenue

Exterior

Construction

  • Roof: Composition
  • Structure Type: House
  • Window Features: Bay Window(s), Skylight(s), Window Coverings
  • Year Built: 1900
  • Architectural Style: Victorian
  • Construction Materials: Stone, Wood Siding
  • Exterior Features: Dog Run, Gas Grill

Features

  • Direction Faces: South
  • Patio And Porch Features: Deck, Patio
  • Pool Features: Private
  • Road Frontage Type: Public
  • View: Mountain(s)

Measurements

  • Building Area Total: 3,926
  • Lot Features: Corner Lot, Historical District, Level, Sprinklers In Front
  • Lot Size Acres: 0.15
  • Lot Size Square Feet: 6,332

Financial

Taxes

  • Parcel Number: R0008802
  • Tax Annual Amount: $18,826.00
  • Tax Year: 2024

Interior

Features

  • Appliances: Bar Fridge, Dishwasher, Disposal, Dryer, Freezer, Oven, Refrigerator, Self Cleaning Oven, Washer
  • Fireplace Features: Basement, Free Standing, Gas, Living Room
  • Flooring: Wood
  • Interior Features: Eat-in Kitchen, Kitchen Island, Open Floorplan, Vaulted Ceiling(s), Walk-In Closet(s), Wet Bar

Measurements

  • Living Area: 3,239

Rooms

  • Basement: Walk-Out Access
  • Has Basement: Yes
  • Bathrooms Full: 2
  • Bathrooms Three Quarter: 1
  • Bathrooms Total Integer: 3
  • Bedrooms Total: 4
  • Main Level Bathrooms: 1
  • Main Level Bedrooms: 1

Other

General

  • Exclusions: Seller's personal property.

Location

  • Subdivision Name: Mapleton

Parking

Parking

  • Attached Garage: Yes
  • Garage Spaces: 2
  • Parking Total: 2

Schools

Elementary School

  • Elementary School: Whittier E-8
  • Elementary School District: Boulder Valley RE 2

High School

  • High School: Boulder
  • High School District: Boulder Valley RE 2

Middle or Junior School

  • Middle Or Junior School: Casey

Utilities

Equipment

  • Cooling: Air Conditioning-Room, Central Air
  • Heating: Forced Air, Hot Water, Radiant, Wood Stove
  • Laundry Features: In Unit
  • Sewer: Public Sewer
  • Utilities: Electricity Available, Natural Gas Available
  • Water Source: Public

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Full MLS Disclaimers

Rebate estimate is indicative only and based on listing price and estimated buyer's agent commission paid by owner, if applicable. Final rebates are subject to Terms of Use and may vary due to final negotiated transaction terms.