$5,300,000

Estimated payment $29,867/month

Total Views 1,164
4 Beds
6 Baths
3,982 Sq Ft
$1,331 Price per Sq Ft

Highlights

  • Solar Power System
  • 0.47 Acre Lot
  • Wooded Lot
  • Foothill Elementary School Rated A
  • Open Floorplan
  • Cathedral Ceiling

About This Home

Tucked behind mature trees on one of North Boulder's most private streets, 800 Kalmia Avenue sits on a half-acre lot and is a newly transformed modern retreat that blends warmth, precision, and timeless design. Reimagined in 2024, the home showcases refined materials, elevated finishes, and foothill views throughout. A welcoming entry with custom built-ins and hidden storage sets the tone for the craftsmanship inside. At the center, a light-filled great room features wide-plank white oak floors with radiant heat, a paneled fireplace, skylights, and full-height glass doors that open to the outdoors. The chef's kitchen includes a Bluestar range, Thermador refrigeration, a marble-topped island, and unlacquered brass hardware. A walk-through butler's pantry adds prep and storage with an ice maker, beverage drawers, and wine storage. From the kitchen, a Dutch door and sliders connect to the backyard, where curated landscaping, a flat lawn, and foothill views create a private sanctuary. Flexible main-level spaces include a family room with built-ins, a stylish powder room with marble sink, and a guest suite that adjoins a versatile office, music room, or den. Upstairs, a landing leads to three en suite bedrooms. The vaulted primary suite captures southern light and mountain views. Its spa-like bathroom offers a soaking tub, steam shower, dual marble vanity, bidet toilet, and walk-in closet. Two additional bedrooms feature custom details such as Zellige tilework, bespoke vanities, and built-in bunk beds. The newly constructed detached three-car garage doubles as a multifunctional extension with a recreation room, kitchenette, laundry and gear-washing area. A stone patio just off the kitchen is plumbed for an outdoor fireplace, perfect for evenings under the stars. Set in a quiet enclave minutes from North Boulder's trailheads, parks, and shopping, 800 Kalmia Avenue offers refined living with privacy, versatility, and enduring design.

Listing Agent

Zachary Zeldner

Compass - Boulder Listed on: 08/20/2025

Compass - Boulder

Home Details

Home Type

  • Single Family

Est. Annual Taxes

  • $14,540

Year Built

  • Built in 1981

Lot Details

  • 0.47 Acre Lot
  • West Facing Home
  • Partially Fenced Property
  • Wood Fence
  • Level Lot
  • Wooded Lot
  • Landscaped with Trees

Parking

  • 3 Car Detached Garage

Home Design

  • Composition Roof
  • Wood Siding

Interior Spaces

  • 3,982 Sq Ft Home
  • 2-Story Property
  • Open Floorplan
  • Bar Fridge
  • Cathedral Ceiling
  • Skylights
  • Gas Fireplace
  • Wood Frame Window
  • Living Room with Fireplace
  • Home Office
  • Fire and Smoke Detector
  • Property Views

Kitchen

  • Eat-In Kitchen
  • Double Oven
  • Gas Oven or Range
  • Microwave
  • Dishwasher
  • Kitchen Island
  • Disposal

Flooring

  • Wood
  • Painted or Stained Flooring

Bedrooms and Bathrooms

  • 4 Bedrooms
  • Walk-In Closet
  • Primary Bathroom is a Full Bathroom
  • Steam Shower

Laundry

  • Laundry on upper level
  • Dryer
  • Washer
  • Sink Near Laundry

Schools

  • Foothill Elementary School
  • Centennial Middle School
  • Boulder High School

Utilities

  • Central Air
  • Radiant Heating System

Additional Features

  • Solar Power System
  • Patio

Community Details

  • No Home Owners Association
  • Kalmia Subdivision

Listing and Financial Details

  • Assessor Parcel Number R0071653

Home Details

Home Type

Single Family

Est. Annual Taxes

$14,540

Year Built

Built in 1981

Lot Details

0

Parking

3

Listing Details

  • Inclusions: Gas Range/Oven,Double Oven,Dishwasher,Refrigerator,Bar Refrigerator,Clothes Washer,Clothes Dryer,Microwave,Laundry Tub,Disposal,Smoke Alarm(s)
  • Year Built: 1981
  • Property Sub Type: Residential-Detached
  • Prop. Type: Residential
  • Horses: No
  • Lot Size Acres: 0.47
  • Co List Office Mls Id: CBR02
  • Subdivision Name: Kalmia
  • Above Grade Finished Sq Ft: 3982
  • Garage Yn: Yes
  • Unit Levels: Two
  • New Construction: No
  • Green Power: Solar PV Owned
  • Building Stories: 2
  • Power Production Type: Photovoltaics
  • Kitchen Level: Main
  • IRESDS_HasWaterRights: No
  • IRESDS_Total Sq Ft: 3982
  • Special Features: VirtualTour
  • Stories: 2

Interior Features

  • Possible Use: Single Family
  • Private Spa: No
  • Appliances: Gas Range/Oven, Double Oven, Dishwasher, Refrigerator, Bar Fridge, Washer, Dryer, Microwave, Disposal
  • Has Basement: None
  • Full Bathrooms: 2
  • Half Bathrooms: 2
  • Three Quarter Bathrooms: 2
  • Total Bedrooms: 4
  • Fireplace Features: Gas, Living Room
  • Fireplace: Yes
  • Flooring: Wood Floors
  • Interior Amenities: Study Area, Eat-in Kitchen, Cathedral/Vaulted Ceilings, Open Floorplan, Pantry, Walk-In Closet(s), Kitchen Island, Steam Shower
  • Living Area: 3982
  • Main Level Bathrooms: 2
  • Window Features: Wood Frames, Skylight(s)
  • Room Bedroom4 Area: 132
  • Room Bedroom3 Features: Wood Floor
  • IRESDS_HasFamilyRoom: No
  • Room Bedroom4 Level: Main
  • Living Room Living Room Level: Main
  • Room Bedroom3 Area: 168
  • Room Bedroom4 Features: Wood Floor
  • Master Bedroom Master Bedroom Level: Upper
  • Room Bedroom2 Area: 156
  • Room Bedroom3 Level: Upper
  • Master Bedroom Master Bedroom Width: 13
  • Room Bedroom2 Level: Upper
  • Room Bedroom2 Features: Wood Floor
  • Master Bedroom Features: Wood Floor
  • Room Kitchen Features: Wood Floor
  • Room Living Room Area: 483
  • Living Room Features: Wood Floor
  • Room Kitchen Area: 180
  • Room Master Bedroom Area: 260
  • Master Bathroom Features: Full Primary Bath, Luxury Features Primary Bath

Exterior Features

  • Roof: Composition
  • Fencing: Partial, Wood
  • Lot Features: Wooded, Level
  • View: Foothills View
  • View: Yes
  • Waterfront: No
  • Disclosures: Seller's Property Disclosure
  • Home Warranty: No
  • Construction Type: Wood Siding, Painted/Stained
  • Direction Faces: West
  • Patio And Porch Features: Patio
  • Property Condition: Not New, Previously Owned

Garage/Parking

  • Attached Garage: No
  • Covered Parking Spaces: 3
  • Garage Spaces: 3
  • Parking Features: Oversized
  • IRESDS_GarageType: Detached

Utilities

  • Cooling: Central Air
  • Electric: Electric, XCEL
  • Heating: Radiant
  • Utilities: Natural Gas Available, Electricity Available
  • Laundry Features: Sink, Upper Level
  • Security: Smoke Detector(s)
  • Cooling Y N: Yes
  • Heating Yn: Yes
  • Electricity On Property: No
  • Sewer: City Sewer
  • Water Source: City Water, City of Boulder
  • Gas Company: Natural Gas, XCEL

Condo/Co-op/Association

  • Senior Community: No
  • Association: No

Schools

  • Elementary School: Foothill
  • HighSchool: Boulder
  • Junior High Dist: Boulder Valley Dist RE2
  • Middle Or Junior School: Centennial

Lot Info

  • Zoning: RES
  • Lot Size Sq Ft: 20354
  • Parcel #: R0071653
  • Irrigation Water Rights: No

Tax Info

  • Tax Year: 2024
  • Tax Annual Amount: 14540

Multi Family

Map

Range of Values:

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Home Values in the Area

Source: Public Records

Average Home Value in this Area





Source: Public Records

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 $14,540 $175,694 $150,019 $25,675
2024 $14,540 $175,694 $150,019 $25,675
2023 $15,033 $165,450 $152,221 $16,913
2022 $10,757 $122,786 $110,507 $12,279
2021 $10,257 $126,319 $113,687 $12,632
2020 $9,149 $112,262 $89,804 $22,458
2019 $9,009 $112,262 $89,804 $22,458
2018 $7,967 $99,086 $79,272 $19,814
2017 $7,717 $109,546 $87,640 $21,906
2016 $5,805 $75,015 $60,018 $14,997
2015 $5,497 $62,135 $21,014 $41,121
2014 $5,224 $62,135 $21,014 $41,121
Source: Public Records

Property History

Date Event Price Change Sq Ft Price
08/21/2025 08/21/25 For Sale $5,300,000 +96.9% $1,331 / Sq Ft
06/15/2022 06/15/22 Sold $2,691,600 -5.6% $957 / Sq Ft
04/28/2022 04/28/22 For Sale $2,850,000 -- $1,013 / Sq Ft
Source: IRES MLS

Purchase History

Date Type Sale Price Title Company
Warranty Deed $2,691,300 None Listed On Document
Interfamily Deed Transfer -- None Available
Interfamily Deed Transfer -- None Available
Interfamily Deed Transfer -- --
Interfamily Deed Transfer -- --
Deed $54,000 --
Deed -- --
Source: Public Records

Mortgage History

Date Status Loan Amount Loan Type
Open $500,000 Credit Line Revolving
Open $2,143,200 New Conventional
Previous Owner $500,000 New Conventional
Source: Public Records

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Source: IRES MLS

MLS Number: 1041862

IRES MLS

APN: 1461241-17-002