3663 4th St, Boulder, CO 80304
OFF MARKET

$11,694,200

Trulia Estimate
  • 6 Beds
  • 5 Baths
  • 9,530 sqft (on 5.40 acres)

3663 4th St, Boulder, CO 80304

Juniper - Kalmia
Est. Refi. Payment $65,174/mo*
Refinance Your Home

Home Value

Trulia Estimate
$11.7M
Since last month
Increased$155K (+1.3%)
Since last year
Increased$1M (+9.8%)
Learn more about this home's value by checking out its Trulia Estimate, the value of nearby homes, and how much similar homes have sold for.

Trulia Estimate

The of this home's value increased by +97% in the last 10 years
MonthEstimated value
2026
August 2026$11.8M
August 2026$11.69M
July 2026$11.65M
June 2026$11.33M
May 2026$11.49M
April 2026$12.07M
March 2026$11.61M
February 2026$11.61M
January 2026$11.02M
2025
2024
2023
2022
2020
2019
2018
2017
2016

Comparable sales

These are recently sold homes that have a similar location or other similar features to this home, like bedrooms, bathrooms, and square footage. Get a sense of the expected prices in the area by viewing these homes.
Address
Distance
Property Type
Sold Price
Sold Date
Bed
Bath
Sqft
503 Kalmia Ave, Boulder, CO
0.14
Single-Family Home
$3,438,500
05/26/26
4
3.5
5,381
440 Japonica Way, Boulder, CO
0.23
Single-Family Home
$8,500,000
07/02/26
5
4.5
5,244
3555 4th St, Boulder, CO
0.12
Single-Family Home
$8,000,000
07/30/26
4
4.5
4,218
706 Juniper Ave, Boulder, CO
0.31
Single-Family Home
$14,100,000
06/15/26
7
9
9,800
255 Linden Dr, Boulder, CO
0.17
Single-Family Home
$2,275,000
07/10/26
5
4
3,071
503 Hawthorn Ave, Boulder, CO
0.33
Single-Family Home
$5,150,000
06/12/26
6
5.5
5,670
3561 4th St, Boulder, CO
0.11
Single-Family Home
$2,050,000
03/06/26
4
3
3,879
210 Cactus Ct, Boulder, CO
0.55
Single-Family Home
$6,130,000
07/24/26
6
5
6,020
640 Iris Ave, Boulder, CO
0.35
Single-Family Home
$5,250,000
06/30/26
4
4.5
5,226
865 Kalmia Ave, Boulder, CO
0.34
Single-Family Home
$2,950,000
04/29/26
5
3.5
4,220

Nearby home prices

Get a sense of expected prices in the area by checking the value of nearby homes.
Address
Distance
Price
Bed
Bath
Sqft
Status
310 Linden Ave, Boulder, CO 80304
0.06
$2,119,900
1
1
1,106
Off Market
310 Linden Dr, Boulder, CO 80304
0.06
-
-
-
-
Off Market
497 Kalmia Ave, Boulder, CO 80304
0.11
$5,400,000
5
4.5
5,964
For Sale
3561 4th St, Boulder, CO 80304
0.11
$2,050,000
4
3
3,879
Recently Sold
503 Kalmia Ave, Boulder, CO 80304
0.14
$3,438,500
4
3.5
5,381
Recently Sold
3555 4th St, Boulder, CO 80304
0.12
$8,000,000
4
4.5
4,218
Recently Sold
3535 4th St #(Set Back), Boulder, CO 80304
0.12
$3,632,800
3
2.5
4,606
Off Market
3735 Wild Plum Ct, Boulder, CO 80304
0.17
$2,995,000
6
4
4,684
For Sale
255 Linden Dr, Boulder, CO 80304
0.17
$2,275,000
5
4
3,071
Recently Sold
423 Juniper Ave, Boulder, CO 80304
0.18
$5,175,800
5
4
4,597
Off Market
3421 4th St, Boulder, CO 80304
0.17
$6,800,000
6
4.5
5,198
For Sale
536 Linden Park Dr, Boulder, CO 80304
0.21
$4,950,000
5
6
4,174
For Sale

Local Information

  • Map ViewExplore the area around 3663 4th St.
  • Schools1 Elementary School1 Middle School1 High School
  • Shop & Eat
-- mins to
Commute Destination

Home Highlights

Property Type
Single-Family Home
Year Built
1995
Lot Size
5.4 acres
Living Area
9,530 sqft
Price/Sqft
$1,227
Parking
Garage

About this House

This single-family home is located at 3663 4th St, Boulder, CO. 3663 4th St is in the Juniper - Kalmia neighborhood in Boulder, CO and in ZIP code 80304. This property has 6 bedrooms, 5 bathrooms and approximately 9,530 sqft of floor space. This property has a lot size of 5.40 acres and was built in 1995.
3663 4th St, Boulder, CO 80304 is a 6 bedroom, 5 bathroom, 9,530 sqft single-family home in Juniper - Kalmia, built in 1995. This property is not currently displayed as for sale or rent on Trulia. The Trulia Estimate is $11,694,200, with a rent estimate of $5,029/month.

Home Details for 3663 4th St

Interior Features

Interior Details
BasementNumber of Rooms: 14
Heating & Cooling
Heating: Forced AirAir ConditioningCooling System: CentralHeating Fuel: Forced Air

Exterior Features

Exterior Home Features
Roof: TileDeckExterior: Stucco, Brick
Parking & Garage
GarageParking: Garage Attached

Property Information

Year Built
Year Built: 1995Year Updated: 1995
Property Type / Style
Property Type: Single Family HomeArchitecture: split level

Community

Units in Building: 1

Lot Information

Lot Area: 5.40 acres

Price and Tax history

YearProperty taxTax assessment
2025
$85,247
$14,992,300
Home facts updated by county records

Market trends in Boulder

Last updated July 2026
Buyer'sMarketSeller'sMarket
Avg. sale price
$897K
$10.37KMoM
Sale-to-List Price
98.4%
0.1%MoM
Price per sq ft
$499
$4MoM
Available listings
760
19MoM

Around this home

Neighborhood Overview

Juniper - Kalmia
See Local Highlights
Neighborhood stats provided by third party data sources.

What Locals Say about Juniper - Kalmia

At least 2 Trulia users voted on each feature.

  • 100 % Say parking is easy

  • 100 % Say there are community events

  • 100 % Say it's dog friendly

  • 100 % Say there's holiday spirit

  • 100 % Say people would walk alone at night

  • 100 % Say it's quiet

  • 100 % Say there's wildlife

  • 80 % Say it's walkable to grocery stores

  • 77 % Say neighbors are friendly

  • 75 % Say kids play outside

  • 71 % Say yards are well-kept

  • 67 % Say it's walkable to restaurants

  • 40 % Say there are sidewalks

  • 33 % Say streets are well-lit

Sourced by Trulia users. Learn more about our methodology.
  • Megan La Grave
    "Fantastic neighborhood for all ages and pets! Come walk it sometime and see for yourself. Close to the trails "
    0
    Flag
  • Trulia User
    "A close knit neighborhood and desirable area of Boulder at the foot of the mountains. You are as likely to get a wave as you are to see wildlife walking down the middle of the street."
    1
    Flag

LGBTQ Local Legal Protections

Frequently asked questions about 3663 4th St

  • What is 3663 4th St estimated to be worth?
    Trulia's estimated value for 3663 4th St in Boulder, CO is $11,694,200.
  • Is Boulder a buyer's or seller's market?
    Boulder is currently a balanced market, based on recent for-sale activity.
  • What's the median sale price in Boulder?
    The median sale price in Boulder is $897K. That is up $10.37K from the prior month.
  • What are the closest schools to 3663 4th St?
    The closest schools to 3663 4th St in Boulder, CO are Boulder High School (rated 9/10), Centennial Middle School (rated 6/10), Foothill Elementary School (rated 9/10).
  • Does 3663 4th St have air conditioning?
    Yes, 3663 4th St in Boulder, CO has air conditioning.
  • How big is the lot at 3663 4th St?
    The lot at 3663 4th St in Boulder, CO is about 5.4 acres.

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Apartments for Rent

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