6300 Diagonal Hwy, Boulder, CO 80301 Property Records

Boulder County property record for 6300 Diagonal Hwy, Boulder, CO 80301

Property Summary

Property TypeGeneral Industrial
Details2,102,591 sqft · built 1966
Lot Size344 acres (15,003,776 sqft)
OwnerCompany Name on Record
Tax Bill$2,972,454 (2025)
Deeds & MortgagesSep 2021 Sale
Flood ZoneZone X (minimal risk)
APN1317-35-0-00-016

Property Details

APN / Parcel Number

Primary APN1317-35-0-00-016
Alternative APNs
  • R0031802
  • 0031802

Interior

Stories4 Stories
Building Area2,102,591 sqft Gross Area
1st Floor Area931,285 sqft

Exterior

Year BuiltBuilt 1966
Effective Year BuiltEffective 1971
Construction TypeManufactured
Lot Area15,003,776 sqft
Total Buildings18 Buildings

Utilities, Heating & Cooling

Cooling SystemHVAC
Heating SystemForced Air with A/C

Location & Zoning

Account NumberR0031802
Street Address6300 DIAGONAL HWY
CityBOULDER
StateCO
Zip80301-9270
Property CategoryIndustrial
Property TypeIndustrial > General Industrial
Legal DescriptionSW 1/4 35-2N-70 & W1/2 2-1N-70 346.92 AC M/L
Legal Range70
Legal Township2N
Legal Section35
Legal SubdivisionTR, NBR 193, 199 - COMMERCIAL
Legal Block2
JurisdictionBOULDER CO
Township / Civil DivisionBOULDER
Census Block Group2
Census Block2026
Census Tract12701

Owner

Source: Boulder County records, as of September 18, 2026

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

Owner of RecordCompany Name on Record
Mailing Address1 VANDERBILT AVE, 15, NEW YORK, NY 10017-3974
Owner TypeCompany

Deeds, Mortgages & Sale History

Assessor's Deed Record

Deed NamesName on Deed
Last SaleSep 24, 1969
Deed SaleSep 24, 1969
Prior SaleOct 25, 1957
Deed Document Number1969925446
Record UpdatedOct 29, 2026

September 2021: Special Warranty Deed, Transfer

Document TypeSpecial Warranty Deed
JurisdictionBOULDER CO
Recording DateSep 22, 2021
Property Address6300 DIAGONAL HWY, BOULDER, CO 80301-9270
Document Number0003915919
Instrument DateSep 1, 2021
Instrument3915919
Transaction TypeTransfer
Record UpdatedApr 15, 2022

Transaction

Tax$0.00
Amount AccuracyNo Consideration Stated
Additional
  • Arm's Length

Transferred From (Grantor/Seller)

NameVerified Name

Transferred To (Grantee/Buyer)

NameVerified Name
Address1 VANDERBILT AVE # 15TH, NEW YORK, NY 10017-3852

Tax Assessment & Valuation

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

Property Jurisdictions

TypeName
StateColorado
CountyBoulder County
MunicipalityBoulder City
Unified School DistrictBoulder Valley School District RE-2 (PK - 12)

Tax Bill & Assessment History

YearTax BillAssessed ValueAssessed Market Value
2026$18,684,946 (-43.93%) Land $13,221,665 Building $5,463,281$71,867,000 (-41.77%) Land $50,854,380 Building $21,012,620
2025$2,972,454.00 (%)$33,323,476 (-3.21%) Land $1,009,093 Building $32,314,383$123,420,280 (+0.01%) Land $3,737,380 Building $119,682,900
2023$2,972,595.00 (+143.25%)$34,429,748 (+161.64%) Land $1,038,222 Building $33,391,526$123,405,889 (+171.93%) Land $3,723,000 Building $119,682,889
2022$1,222,010.00$13,159,144 Land $6,854,254 Building $6,304,890$45,381,200 Land $23,640,200 Building $21,741,000

Assessed value and assessed market value are set for property tax purposes and are not market price estimates.

Flood

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

FEMA Flood ZoneZone X
minimal risk
Flood Insurance RequirementNot required
lenders may require it
Community Rating SystemClass 5 (25% premium discount)
Nearby Flood Policies9 in force
Nearby Flood Claims3 (2013–2022)
Claims Outside the SFHA3 of 3
Most Recent ClaimAug 2022 · rainfall accumulation

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 RiskLow
lower than 93% of the US · lower than 97.2% of Colorado
Wildfire Likelihood0.04% annual chance
ExposureNone
beyond ember reach

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

Nearby Properties on Diagonal Hwy

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