$4,750,000

503 Kalmia Ave Boulder, CO 80304

5 beds
3 full, 1 partial
5,113 sqft
0.6 acres
$929 / sqft
House

Property details

About 503 Kalmia Ave

Tucked behind a private, gated entrance on a lush 0.57-acre lot, this home, remodeled by renowned architect Harvey Hine, offers the pinnacle of luxury and modern design. Step through the oversized wood pivot door that leads to an open-concept great room with soaring vaulted ceilings, a dramatic fireplace, and warm maple hardwood floors. Expansive windows fill the space with natural light and offer seamless access to the rear deck, perfect for entertaining. The chef's kitchen features custom cabinetry, stone countertops, tile backsplashes, a Wolf range, and a Subzero refrigerator. A spacious walk-in pantry and waterfall island enhance functionality and elegance. A cozy library lounge area leads to a home office or fifth bedroom with direct front patio access. The main level primary suite is a serene retreat with a spacious bedroom, walk-in closet, and a spa-like en suite bathroom. A fully finished lower level with media room, fitness area, and guest suite provides ample space for family or visitors. The striking wood exterior, metal roof, and grand slate patio set the tone for a residence that exudes sophistication and tranquility. The expansive grounds offer tranquility with a water feature, several seating areas, stone patios, a deck, 40-50' evergreens surrounding the property, natural boulders, lush landscaping, and abuts a seasonal ditch. Don't miss the bonus heated studio, which is ideal for a gym, art studio, or office. Additional amenities include an attached two-car garage, a dramatic illuminated gated driveway, and ample extra parking. Located in Newlands, with easy access to North Boulder, downtown, hiking trails, open space, and top-rated schools, this home offers the perfect blend of luxury, privacy, and convenience. Don't miss the virtual tour and listing video.

Highlights

Home typeSingle Family Residence
HeatingForced Air
StatusActive
CoolingCeiling Fan(s), Central Air
Size5,113 sqft
BasementYes
Lot size0.57 Acres
Year built1978
ParkingOversized, RV Access/Parking
MLS #IR1027404
Attached garage2 spaces
FireplaceGas, Living Room

Summary

  • MLS Number: IR1027404
  • MLS Name: RECOLORADO
  • Office Name: Open Real Estate
  • Office Phone: (303) 522-4184
  • Listing Agent: Sara Groem

IDX Listings courtesy of REColorado as distributed by MLS GRID.

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IDX ©2025 METROLIST, INC., DBA RECOLORADO® - All Rights Reserved.

Presented by Rocket Homes Real Estate, LLC
Licensed in Colorado Brokerage License # EC. 100073419

The content relating to real estate for sale in this Web site comes in part from the Internet Data eXchange ("IDX") program of METROLIST, INC., DBA RECOLORADO® Real estate listings held by brokers other than Rocket Homes Real Estate, LLC are marked with the IDX Logo. This information is being provided for the consumers' personal, non-commercial use and may not be used for any other purpose. All information subject to change and should be independently verified.

This publication is designed to provide information with regard to the subject matter covered. It is displayed with the understanding that the publisher and authors are not engaged in rendering real estate, legal, accounting, tax, or other professional services and that the publisher and authors are not offering such advice in this publication. If real estate, legal, or other expert assistance is required, the services of a competent, professional person should be sought.

The information contained in this publication is subject to change without notice. METROLIST, INC., DBA RECOLORADO MAKES NO WARRANTY OF ANY KIND WITH REGARD TO THIS MATERIAL, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE. METROLIST, INC., DBA RECOLORADO SHALL NOT BE LIABLE FOR ERRORS CONTAINED HEREIN OR FOR ANY DAMAGES IN CONNECTION WITH THE FURNISHING, PERFORMANCE, OR USE OF THIS MATERIAL.

All real estate advertised herein is subject to the Federal Fair Housing Act and the Colorado Fair Housing Act, which Acts make it illegal to make or publish any advertisement that indicates any preference, limitation, or discrimination based on race, color, religion, sex, handicap, familial status, or national origin.

METROLIST, INC., DBA RECOLORADO will not knowingly accept any advertising for real estate that is in violation of the law. All persons are hereby informed that all dwellings advertised are available on an equal opportunity basis.

Equal Housing

© 2025 METROLIST, INC., DBA RECOLORADO® – All Rights Reserved
6455 S. Yosemite St., Suite 300
Greenwood Village, CO 80111 USA

ALL RIGHTS RESERVED WORLDWIDE. No part of this publication may be reproduced, adapted, translated, stored in a retrieval system or transmitted in any form or by any means, electronic, mechanical, photocopying, recording, or otherwise, without the prior written permission of the publisher. The information contained herein including but not limited to all text, photographs, digital images, virtual tours, may be seeded and monitored for protection and tracking.
Data displayed may be a portion of, and not a complete set of all listings published in the MLS.
Last updated on: 3/10/2025, 7:12:51 PM Eastern. If you have any questions regarding the accuracy of this data, please contact us at help@rockethomes.com.

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view of front of home with stucco siding, concrete driveway, an attached garage, a standing seam roof, and metal roof

$4,750,000

503 Kalmia Ave

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Price information

Property sales

DateEventPrice
Feb 21, 2019
Home Sold
$3,025,000
Jul 11, 2018
Home Sold
$2,875,000
Nov 01, 2011
Home Sold
$1,130,000
May 31, 2011
Home Sold
$1,130,000
May 15, 2008
Home Sold
$1,145,000
Jun 06, 2006
Home Sold
$917,000

Tax history

YearAssessmentProperty Tax
2023$325,131$27,759
2022$223,109$20,718
2021$229,529$19,756
2020$205,563$17,893
2019$242,035$15,843
2018$182,736$15,347
2017$182,736$15,062

History based on county public records data.

Nearby schools

8

Foothill Elementary School

Public District KG-5

0.4 mi

1001 Hawthorn Ave

7

Crest View Elementary School

Public District KG-5

1.2 mi

1897 Sumac Ave

5

Columbine Elementary School

Public District PK-5

1.2 mi

3130 Repplier St

School ratings are a score out of 10, where 10 is the highest and 1 is the lowest.

All data from GreatSchools

Neighborhood

The neighbors living near this home have an average income of $116,146. Typical income of Boulder, CO residents is between $35k-100k annually. Typical family type is single, no kids. Residents of this area typically have post secondary degree education.

How much money do the neighbors make?

15%
<35k
30%
35k-100k
27%
100k-200k
28%
200k+

What level of education do the neighbors have?

High School Diploma
Post Secondary Degree
Masters Degree
Doctorate

What types of families live nearby?

35%
Single, No Kids
6%
Single, with Kids
30%
Married, No Kids
29%
Married, with Kids

Are the neighbors home owners or renters?

Home Owners
Renters

How old are people in this area?

18%
<11 yrs old
8%
12-17 yrs old
15%
18-34 yrs old
47%
35-64 yrs old
12%
65+ yrs old

What do the neighbors do for fun?

  • Skiing/snowboardingSkiing/snowboarding
  • Men's TennisMen's Tennis
  • TennisTennis

Where do the neighbors shop?

  • NordstromNordstrom
  • BloomingdalesBloomingdales
  • Brooks BrothersBrooks Brothers

Where do the neighbors go to eat?

  • California Pizza KitchenCalifornia Pizza Kitchen
  • Bonefish GrillBonefish Grill
  • QdobaQdoba

What do the neighbors drive?

  • BMWBMW
  • LexusLexus
  • AcuraAcura

What do the neighbors listen to?

  • Talk/PersonalityTalk/Personality
  • NewsNews
  • SportsSports
All data provided by Home Junction and Claritas

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Frequently asked questions

About 503 Kalmia Ave

This home is located at 503 Kalmia Ave in Boulder, CO and zip code 80304 in the Northwest Boulder neighborhood. This 5,113 square foot home, which was built in 1978, sits on a 0.57 acre lot. Features: 5 bedrooms, 4 bathrooms. It has been listed on Rocket Homes since February 28, 2025 and is currently priced at $4,750,000.

Over 8 listings were sold over their listed price in February 2025 in Boulder, CO. In the same period over 41 listings were sold below the listed price and 26 listings were sold for the listed price. The inventory of homes for sale in Boulder, CO between January and February 2025 increased by 25.3%. In February 2025 median list price was $981,583 and the average listing age was 63 days.

From Rocket Homes Real Estate and based on county public records data.

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