421 Mapleton Ave, Unit A

1
Bath
618 Sq. Ft.
$979 / Sq. Ft.
618
Sq. Ft.
$979
per Sq. Ft.

Description

HUGE Price Improvement on this PERFECTLY LOCATED property in West Boulder! This Mapleton Hill historic gem sits only two blocks from Mt. Sanitas & just a few blocks to Downtown. The inside has a flowing floor plan with high ceilings, brick accent walls, built-in book shelves & wood floors throughout. A modern kitchen features Sub Zero & Bosch appliances as well as stainless steel countertops & a dining area. The bedroom is very spacious & overlooks the park-like patio area & grounds. Building roof...HUGE Price Improvement on this PERFECTLY LOCATED property in West Boulder! This Mapleton Hill historic gem sits only two blocks from Mt. Sanitas & just a few blocks to Downtown. The inside has a flowing floor plan with high ceilings, brick accent walls, built-in book shelves & wood floors throughout. A modern kitchen features Sub Zero & Bosch appliances as well as stainless steel countertops & a dining area. The bedroom is very spacious & overlooks the park-like patio area & grounds. Building roof is less then 2 years old and the garage roof is less then 3 years old. Newer gas stove & garbage disposal. Super well maintained unit with utility bills averaging only $30-$40 per Month! This elegantly historic property is a true rarity sitting in an ideal location. HOA does not allow short term rentals. Pet friendly HOA. Additional off-street parking on both sides of the garage AND alley access! The HOA shows 775 SQ. FT.

Property Details for 421 Mapleton Avenue, Unit A

Locale
Boulder
Description 1
1st Floor, Outside Entry
LISTING UPDATED: 10/20/2025 07:47 PM

Property Details for 421 Mapleton Avenue, Unit A

StatusSold
MLS #997643
Days on Compass196
Taxes$3,164 / year
HOA Fees$7,740 / year
Condo/Co-op Fees-
Compass TypeCondo
MLS TypeResidential
Year Built1906
CountyBoulder County

Location

Sold By The Agency - Boulder, Marybeth Emerson

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Building Information for 421 Mapleton Avenue, Unit A

Building/Complex421 Mapleton AveFloor-Stories-Pet Policy-Pet Policy DetailsDogs OKYear Built1906Building Size-

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$3,857 per month

30 year fixed, 6.15% Interest

Principal and Interest

$2,949

Property Taxes

$264

HOA Dues

$645

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Property Information for 421 Mapleton Avenue, Unit A

Summary
Location and General Information
  • Road Access 2: City Street
  • Latitude: 40.02
  • Longitude: -105.29
Parking
  • Total Parking: 1.00
Taxes and HOA Information
  • Fee Includes: Trash, Maintenance Grounds, Exterior Maintenance, Insurance
  • Has HOA: Yes
  • HOA Fee: $7,740.00
  • Legal Description: UNIT 421A MAPLETON AVENUE CONDOMINIUMS & UND 9.07% INT IN GCE
  • Tax Information: No
  • Has HOA 2: No
  • HOA2 Fee Amount: $0
  • Tax Year: 2022
  • Association Fee Frequency: Monthly
  • HOA Email Address: boulosayad@gmail.com
  • HOA Transfer Fee: Yes
  • Association Name: Boulos Ayad
  • Association Phone: 720.270.9257
  • Has Association Fee: Yes
  • Has Association Reserve: Yes
  • Tax Annual Amount: $3,164
  • Parcel Number: R0140895
Property
Lot Information
  • Lot Improvements: Historic District, Paved, Curbs, Sidewalks, Street Light, Alley
  • Has Irrigation Water Rights: No
  • Has Improvements: No
Property and Assessments
  • Total Finished Area Source: Assessor
  • Living SqFt: 618
  • Above Grade Finished Area Source: 618
  • Sq Ft Apx: 0
  • Total Finished Area: 618
  • Property Attached YN: Yes
  • Are Ditches Active: No
  • New Construction YN: No
  • Levels: Two
Utilities
  • Electric: Xcel
  • Sewer: Public Sewer
Interior and Exterior Features
Exterior Features
  • Construction Materials: Brick
Interior Features
  • Interior Features: Eat-in Kitchen
  • Laundry Features: Refrigerator
  • All Bedrooms Conform: Yes
  • Full Bathrooms: 0
  • Half Bathrooms: 0
  • Rough-in Bathrooms: 0
  • Three Quarters Bathrooms: 0
  • Baths Full Additional: 0
  • Baths Full Basement: 0
  • Baths Full Upper: 0
  • 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: 0
Room Information
Room 1
  • RoomDescription: Hardwood
  • RoomLength: 12.0
  • RoomLevel: Main
  • RoomType: Kitchen
  • RoomWidth: 10.0
Room 2
  • RoomDescription: Wood
  • RoomLength: 12.0
  • RoomLevel: Main
  • RoomType: Primary Bedroom
  • RoomWidth: 11.0
Rental
Rental Information
  • Horse YN: No
  • Occupant Type: Owner
  • Pets Allowed: Dogs OK

Property History for 421 Mapleton Avenue, Unit A

DateEvent & SourcePriceAppreciation
Oct 8, 2024

Sold (Public Record)

Public Record #1546401821

$605,000—
Apr 16, 2024

Sold (Public Record)

Public Record #1533565294

$605,000

+1.9% / yr

Nov 30, 2016

Sold (Public Record)

Public Record #584054632

$525,000—
DateEvent & SourcePrice
10/08/2024

Sold (Public Record)

Public Record #1546401821

$605,000
04/16/2024

Sold (Public Record)

Public Record #1533565294

$605,000

+1.9% / yr

11/30/2016

Sold (Public Record)

Public Record #584054632

$525,000

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

Public Records for 421 Mapleton Avenue, Unit A

Taxable ValueLand-Additions$43,106Total-
Tax Record2025$4,110 ($343 / month)
Home Facts
Beds1Baths1Total Finished SqFt618 SqFtAbove Grade Finished SqFt618 SqFtStories1StyleCondominiumYear Built1906Zoning1230CountyBOULDERAPN1461-25-4-85-003

Schools near 421 Mapleton Avenue, Unit A

This home is within Boulder Valley Re 2 School District.
Rating
School
Type
Grades
Distance
Public - K to 5
Public - 6 to 8
Public - 9 to 12
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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Based on information submitted to the MLS GRID as of 10/20/2025 07:47 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.