3640 Walnut St, Boulder, CO 80301 Property Records

Boulder County property record for 3640 Walnut St, Boulder, CO 80301

Property Summary

Property Type	General Industrial
Details	19,881 sqft · built 1987
Lot Size	1.34 acres (58,541 sqft)
Owner	Company Name on Record
Last Sale	$1,884,000 (Feb 2006)
Tax Bill	$125,236 (2025)
Deeds & Mortgages	Jun 2023 Sale & Mortgage Apr 2022 Line of Credit + 11 more
Flood Zone	Zone X (moderate risk)
APN	`1463-29-4-00-057`

Property Details

APN / Parcel Number

Primary APN	`1463-29-4-00-057`
Alternative APNs	`R0510798` `0006702`

Interior

Units	4 Units
Stories	1 Story
Building Area	19,881 sqft Gross Area
1st Floor Area	19,881 sqft

Exterior

Year Built	Built 1987
Effective Year Built	Effective 1990
Exterior Material	Block Painted
Construction Type	Steel Frame
Lot Area	58,541 sqft (1.34 acres)

Utilities, Heating & Cooling

Cooling System	Package A/C
Heating System	HVAC

Location & Zoning

Account Number	R0510798
Street Address	3640 WALNUT ST
City	BOULDER
State	CO
Zip	80301-2526
Property Category	Industrial
Property Type	Industrial > General Industrial
Legal Description	TRACT 3188 BOULDER, 29-1N-70
Legal Subdivision	LAND AND TRACTS
Legal Tract	3188
Legal Block	2
Jurisdiction	BOULDER CO
Township / Civil Division	BOULDER
Census Block Group	2
Census Block	2024
Census Tract	12208

Owner

Source: Boulder County records, as of October 16, 2026

Owner names and exact recorded amounts shown locked on this page are available instantly with a free trial.

Owner of Record	Company Name on Record
Mailing Address	1962 BLAKE ST, 200, DENVER, CO 80202-1298
Owner Type	Company

Deeds, Mortgages & Sale History

Date	Document
Jun 6, 2023	Receiver's Deed, Transfer · Commercial Mortgage FORTIS PRIVATE BANK
Apr 4, 2022	Deed of Trust, Mortgage · Line of Credit FIRST WESTERN TRUST BANK
Apr 4, 2022	Deed of Trust, Mortgage · Commercial Mortgage FIRST WESTERN TRUST BANK
Apr 4, 2022	Deed of Trust, Mortgage · Commercial Mortgage FIRST WESTERN TRUST BANK
Jun 17, 2019	Deed of Trust, Mortgage · Commercial Mortgage MIDFIRST BANK
May 20, 2020	Deed of Trust, Mortgage · Line of Credit MIDFIRST BANK
Feb 14, 2020	Deed of Trust, Mortgage · Line of Credit MIDFIRST BANK
May 20, 2020	Deed of Trust, Mortgage · Line of Credit MIDFIRST BANK
Feb 15, 2022	Deed of Trust, Mortgage · Commercial Mortgage INDEPENDENT BANK
Apr 17, 2020	Loan Modification, Mortgage MIDFIRST BK
Jun 4, 2019	Trustee's Deed, Construction Loan · Line of Credit MIDFIRST BK
Apr 24, 2018	Trustee's Deed, Construction Loan · Line of Credit FIRSTBANK
Apr 20, 2018	Deed of Trust, Mortgage · Line of Credit FIRSTBANK

Assessor's Deed Record

Deed Names	Name on Deed
Last Sale	Feb 23, 2006 · Amount on Record
Deed Sale	Feb 23, 2006 · Amount on Record
Prior Sale	Feb 23, 2006 · Amount on Record
Deed Document Number	20062758341
Prior Transfer Date	Feb 13, 2006
Prior Transfer Doc	0002758340
Record Updated	Oct 29, 2026

June 2023: Receiver's Deed, Transfer

Document Type	Receiver's Deed
Jurisdiction	BOULDER CO
Recording Date	Jun 6, 2023
Property Address	3640 WALNUT ST, BOULDER, CO 80301-2526
Document Number	0004009944
Instrument Date	Jun 5, 2023
Instrument	4009944
Transaction Type	Transfer
Record Updated	Jun 27, 2023
Title Company	LAND TITLE GUARANTEE CO

Transaction

Amount	Amount Recorded
Downpayment	Downpayment on Record
Loan-to-Value (LTV)	LTV on Record
Tax	$520.00
Amount Accuracy	Rounded by County
Additional	Arm's Length

Transferred From (Grantor/Seller)

Name	Verified Name

Transferred To (Grantee/Buyer)

Name	Verified Name
Address	1962 BLAKE ST STE 200, 200, DENVER, CO 80202-1298

Mortgage

Document Number	0004009945
Date	Jun 6, 2023
Instrument	4009945

Lender

Name	FORTIS PRIVATE BANK
Type	Bank
Address	DENVER, CO 80202

Agreement

Type	Commercial Mortgage
Amount	Amount Recorded

April 2022: Deed of Trust, Mortgage

Document Type	Deed of Trust
Jurisdiction	BOULDER CO
Property Address	3640 WALNUT ST, BOULDER, CO 80301-2526
Transaction Type	Mortgage
Record Updated	Apr 18, 2022

Transferred To (Grantee/Buyer)

Name	Verified Name

Mortgage

Document Number	0003954218
Date	Apr 4, 2022
Instrument	3954218

Lender

Name	FIRST WESTERN TRUST BANK
Type	Bank
Address	DENVER, CO 80202

Agreement

Type	Line of Credit
Amount	Amount Recorded

Interest

Rate Type	Adjustable Rate
Change Frequency	Monthly

April 2022: Deed of Trust, Mortgage

Document Type	Deed of Trust
Jurisdiction	BOULDER CO
Property Address	3640 WALNUT ST, BOULDER, CO 80301-2526
Transaction Type	Mortgage
Record Updated	Apr 18, 2022
Title Company	FNTG-NCS COLORADO, FNTG NCS COLORADO

Transferred To (Grantee/Buyer)

Name	Verified Name

Mortgage

Document Number	0003954214
Date	Apr 4, 2022
Instrument	3954214

Lender

Name	FIRST WESTERN TRUST BANK
Type	Bank
Address	DENVER, CO 80202

Agreement

Type	Commercial Mortgage
Amount	Amount Recorded

April 2022: Deed of Trust, Mortgage

Document Type	Deed of Trust
Jurisdiction	BOULDER CO
Property Address	3640 WALNUT ST, BOULDER, CO 80301-2526
Transaction Type	Mortgage
Record Updated	Apr 18, 2022

Transferred To (Grantee/Buyer)

Name	Verified Name

Mortgage

Document Number	0003954216
Date	Apr 4, 2022
Instrument	3954216

Lender

Name	FIRST WESTERN TRUST BANK
Type	Bank
Address	DENVER, CO 80202

Agreement

Type	Commercial Mortgage
Amount	Amount Recorded

June 2019: Deed of Trust, Mortgage

Document Type	Deed of Trust
Jurisdiction	BOULDER CO
Property Address	3640 WALNUT ST, BOULDER, CO 80301-2526
Transaction Type	Mortgage
Record Updated	Apr 15, 2022

Transferred To (Grantee/Buyer)

Name	Verified Name

Mortgage

Document Number	0003718442
Date	Jun 17, 2019
Instrument	3718442

Lender

Name	MIDFIRST BANK
Type	Bank
Address	OKLAHOMA CITY, OK 73162

Agreement

Type	Commercial Mortgage
Amount	Amount Recorded
Term	46 Months
Due	Apr 18, 2023

Interest

Rate Type	Adjustable Rate

May 2020: Deed of Trust, Mortgage

Document Type	Deed of Trust
Jurisdiction	BOULDER CO
Property Address	3640 WALNUT ST, BOULDER, CO 80301-2526
Transaction Type	Mortgage
Record Updated	Apr 15, 2022

Transferred To (Grantee/Buyer)

Name	Verified Name

Mortgage

Document Number	0003785141
Date	May 20, 2020
Instrument	3785141

Lender

Name	MIDFIRST BANK
Type	Bank
Address	OKLAHOMA CITY, OK 73162

Agreement

Type	Line of Credit
Amount	Amount Recorded
Term	11 Months
Due	Apr 29, 2021

Interest

Rate Type	Adjustable Rate

February 2020: Deed of Trust, Mortgage

Document Type	Deed of Trust
Jurisdiction	BOULDER CO
Property Address	3640 WALNUT ST, BOULDER, CO 80301-2526
Transaction Type	Mortgage
Record Updated	Apr 15, 2022

Transferred To (Grantee/Buyer)

Name	Verified Name

Mortgage

Document Number	0003766177
Date	Feb 14, 2020
Instrument	3766177

Lender

Name	MIDFIRST BANK
Type	Bank
Address	OKLAHOMA CITY, OK 73162

Agreement

Type	Line of Credit
Amount	Amount Recorded
Term	2 Months
Due	Apr 17, 2020

Interest

Rate Type	Adjustable Rate

May 2020: Deed of Trust, Mortgage

Document Type	Deed of Trust
Jurisdiction	BOULDER CO
Property Address	3640 WALNUT ST, BOULDER, CO 80301-2526
Transaction Type	Mortgage
Record Updated	Apr 15, 2022

Transferred To (Grantee/Buyer)

Name	Verified Name

Mortgage

Document Number	0003785148
Date	May 20, 2020
Instrument	3785148

Lender

Name	MIDFIRST BANK
Type	Bank
Address	OKLAHOMA CITY, OK 73162

Agreement

Type	Line of Credit
Amount	Amount Recorded
Term	120 Months
Due	Apr 30, 2030

Interest

Rate Type	Adjustable Rate

February 2022: Deed of Trust, Mortgage

Document Type	Deed of Trust
Jurisdiction	BOULDER CO
Property Address	3640 WALNUT ST, BOULDER, CO 80301-2526
Transaction Type	Mortgage
Record Updated	Apr 15, 2022

Transferred To (Grantee/Buyer)

Name	Verified Name

Mortgage

Document Number	0003945161
Date	Feb 15, 2022
Instrument	3945161

Lender

Name	INDEPENDENT BANK
Type	Bank
Address	BOULDER, CO 80302

Agreement

Type	Commercial Mortgage
Amount	Amount Recorded
Term	73 Months
Due	Mar 5, 2028

April 2020: Loan Modification, Mortgage

Document Type	Loan Modification
Jurisdiction	BOULDER CO
Property Address	3640 WALNUT ST, BOULDER, CO 80301-2526
Document Number	0003783254
Instrument Date	Apr 17, 2020
Transaction Type	Mortgage
Record Updated	Jun 25, 2020
Title Company	NOT AVAILABLE

Transferred To (Grantee/Buyer)

Name	Verified Name
Relationship	Company
Address	1397 S CHERRYVALE RD #201 BOULDER CO 803039719, 201, BOULDER, CO 80303-9719

Mortgage

Document Number	0003783254
Date	May 11, 2020
Instrument	3783254

Lender

Name	MIDFIRST BK
Type	Bank
Address	OKLAHOMA CITY, OK 73162

Agreement

Amount	Amount Recorded
Term	12 Months
Due	May 10, 2021

June 2019: Trustee's Deed, Construction Loan

Document Type	Trustee's Deed
Jurisdiction	BOULDER CO
Recording Date	Jun 4, 2019
Property Address	3640 WALNUT ST, BOULDER, CO 80301-2526
Instrument Date	Apr 18, 2019
Instrument	3715960
Transaction Type	Construction Loan
Record Updated	Jun 12, 2019
Title Company	NOT AVAILABLE

Transferred To (Grantee/Buyer)

Name	Verified Name
Relationship	Company
Address	1397 S CHERRYVALE RD BOULDER CO 803039719, BOULDER, CO 80303-9719

Mortgage

Document Number	0003715960
Date	Jun 4, 2019
Instrument	3715960

Lender

Name	MIDFIRST BK
Type	Bank
Address	11001 N ROCKWELL AVE, OKLAHOMA CITY, OK 73162-2722

Agreement

Type	Line of Credit
Amount	Amount Recorded
Term	12 Months
Due	Jun 3, 2020

Interest

Rate Type	Adjustable Rate

April 2018: Trustee's Deed, Construction Loan

Document Type	Trustee's Deed
Jurisdiction	BOULDER CO
Recording Date	Apr 24, 2018
Property Address	3640 WALNUT ST, BOULDER, CO 80301-2526
Instrument Date	Apr 20, 2018
Instrument	3651918
Transaction Type	Construction Loan
Record Updated	Aug 31, 2018

Transferred To (Grantee/Buyer)

Name	Verified Name
Relationship	Company
Address	2315 BROADWAY ST BOULDER CO 803044122, BOULDER, CO 80304-4122

Mortgage

Document Number	0003651918
Date	Apr 24, 2018
Instrument	3651918

Lender

Name	FIRSTBANK
Type	Bank
Address	12345 W COLFAX AVE, LAKEWOOD, CO 80215-3742

Agreement

Type	Line of Credit
Amount	Amount Recorded
Term	12 Months
Due	Apr 23, 2019

Interest

Rate Type	Adjustable Rate

April 2018: Deed of Trust, Mortgage

Document Type	Deed of Trust
Jurisdiction	BOULDER CO
Property Address	3640 WALNUT ST, BOULDER, CO 80301-2526
Document Number	0003651917
Instrument Date	Apr 20, 2018
Transaction Type	Mortgage
Record Updated	Aug 31, 2018

Transferred To (Grantee/Buyer)

Name	Verified Name
Relationship	Company
Address	2315 BROADWAY ST BOULDER CO 803044122, BOULDER, CO 80304-4122

Mortgage

Document Number	0003651917
Date	Apr 24, 2018
Instrument	3651917

Lender

Name	FIRSTBANK
Type	Bank
Address	12345 W COLFAX AVE, LAKEWOOD, CO 80215-3742

Agreement

Type	Line of Credit
Amount	Amount Recorded
Term	36 Months
Due	Apr 23, 2021

Interest

Rate Type	Adjustable Rate
Rate	5%

Tax Assessment & Valuation

Source: Boulder County assessment roll, as of September 18, 2026

Property Jurisdictions

Type	Name
State	Colorado
County	Boulder County
Municipality	Boulder City
Unified School District	Boulder Valley School District RE-2 (PK - 12)

Tax Bill & Assessment History

Year	Tax Bill	Assessed Value	Assessed Market Value
2026		$1,326,655 (-21.32%) Land $693,030 Building $633,625	$5,200,000 (-16.73%) Land $2,665,500 Building $2,534,500
2025	$125,236.00 (+9.84%)	$1,686,069 (+29.96%) Land $719,685 Building $966,384	$6,244,700 (+34.29%) Land $2,665,500 Building $3,579,200
2024	$114,016.00 (+1.77%)
2023	$112,037.00 (+31.34%)	$1,297,350 (+42.64%) Land $850,950 Building $446,400	$4,650,000 (+48.27%) Land $3,050,000 Building $1,600,000
2022	$85,304.00	$909,498 Land $397,300 Building $512,198	$3,136,200 Land $1,370,000 Building $1,766,200

Assessed value and assessed market value are set for property tax purposes, not market price estimates; both are a fraction of this property's market value.

Flood

Source: FEMA National Flood Hazard Layer, effective October 14, 2026 · OpenFEMA NFIP redacted claims and policies, as of September 2026

FEMA Flood Zone	Zone X moderate risk
500-Year Floodplain	Yes 0.2% annual chance
Nearest Special Flood Hazard Area	Zone AE, within 500 ft
Flood Insurance Requirement	Not required lenders may require it
Flood Insurance Cost	Premium on Record median of 36 policies
Community Rating System	Class 5 (25% premium discount)
Nearby Flood Policies	36 in force
Nearby Flood Claims	2 (2013)
Most Recent Claim	Sep 2013 · Severe Storms, Flooding, Landslides, And Mudslides
Claims by Event	Severe Storms, Flooding, Landslides, And Mudslides, Sep 2013 · 2 claims

Values are read at the parcel center point; flood claims are located to the census block group, not this parcel; lenders make the official flood determination.

Wildfire

Source: USDA Forest Service Wildfire Risk to Communities (2nd edition), as of 2024

Wildfire Risk	Not rated no burnable land within ember reach

Values cover an area roughly 900 ft across, not the parcel itself; insurers use their own ratings.

Drinking Water

Source: EPA Safe Drinking Water Information System, as of September 2026

Water System	CITY OF BOULDER serves 166,080 people · EPA ID CO0107152
Water Source	Surface water
Last State Inspection	Sep 2024
Lead	2 ppb (2023–2025) action level 15 ppb

Violations Reported to EPA

Water Quality	Haloacetic acids resolved · Jul 2017
Treatment and Procedure	None last 10 years
Monitoring and Reporting	1 last 3 years

Results are for the whole water system, not water tested at this address; lead at the tap also depends on the building's own pipes.

Internet Providers

Source: FCC Broadband Data Collection, based on 41 locations within half a mile, as of December 31, 2025

Provider	Max Down / Up (Mbps)
Ayva Networks Fixed Wireless	2,500 / 2,500
Xfinity Cable	2,000 / 250
LiveWireNet Fixed Wireless	250 / 100

May also be available: AT&T, CenturyLink, Verizon.

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