601 Massachusetts Ave NW, Washington, DC 20001 Property Records

District of Columbia property record for 601 Massachusetts Ave NW, Washington, DC 20001 · Last verified April 2026

Property Highlights

Property Type	Commercial > Office > Commercial Office
Year Built	Built 2017
Square Footage	526,768 sqft Gross Area
Lot Size	44,918 sqft (1.03 acres)
Tax Bill	$7,258,541.00 (2025)

Property Details

APN / Parcel Number

Primary APN	`0484-W-0025`

Interior

Units	2 Units
Building Area	526,768 sqft Gross Area
Stories	11 Stories

Exterior

Year Built	Built 2015
Effective Year Built	Effective 2017
Exterior Material	Brick Exterior
Construction Type	Concrete Construction
Lot Area	44,918 sqft (1.03 acres)

Location & Zoning

Street Address	601 MASSACHUSETTS AVE NW
City	WASHINGTON
State	DC
Zip	20001-5369
Property Usage	Commercial Property Usage
Type	Commercial > Office > Commercial Office
Legal Description	SQUARE 0484 SUFFIX W LOT 0025 NBHD: OLD CITY 2
Legal Subdivision	OLD CITY 2
Legal Block	484
Legal Lot Number	25
Jurisdiction	DISTRICT OF COLUMBIA DC
Minor Civil Division	WASHINGTON
Census Blockgroup	4
Census Block	4002
Census Tract	4702

Owner

Source: District of Columbia records · APN 0484-W-0025

Assessment roll updated October 29, 2025 · Last verified April 2026

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

Owner of Record	Individual Owner on File
Mailing Address	601 MASSACHUSETTS AVE NW, WASHINGTON, DC 20001-5369
Owner Type	Owner is a Company

Deeds, Mortgages & Sale History

Assessor's Deed Record

Deed Names	Verified Name on Deed
Record Refreshed	Jun 08, 2026

August 2022: Special Warranty Deed, Transfer

Document Type	Special Warranty Deed
Jurisdiction	DISTRICT OF COLUMBIA DC
Recording Date	Aug 30, 2022
Property Address	601 MASSACHUSETTS AVE NW, WASHINGTON, DC 20001-5369
Document Number	0000090517
Instrument Date	Aug 30, 2022
Instrument	2022090517
Transaction Type	Transfer
Record Updated	Nov 17, 2022

Transaction

Amount	Amount Recorded
Tax	$0.00
Amount Accuracy	Full Amount Stated
Additional	Arms Length Transaction

Transferred From (Grantor/Seller)

Name	Verified Name

Transferred To (Grantee/Buyer)

Name	Verified Name

Tax Assessment & Valuation

Source: District of Columbia records · Assessment roll updated October 29, 2025 · Last verified April 2026

Property Jurisdictions

Type	Name
Federal District & City	Washington, District of Columbia
Unified School District	District of Columbia Public Schools (PK - 12)

Tax Bill & Assessment History

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

Year	Tax Bill	Assessed Value	Assessed Market Value
2025	$7,258,541.00 (+0.3%)	$384,049,800 (-2.03%) Land $59,462,900 Building $324,586,900	$384,049,800 (-2.03%) Land $59,462,900 Building $324,586,900
2023	$7,236,944.00	$392,019,270 Land $58,296,830 Building $333,722,440	$392,019,270 Land $58,296,830 Building $333,722,440