Property overview

816 William St

Baltimore, MD 21230

Who owns 816 William St, what the county and city have on record, and a measured sell-signal score — every fact dated and sourced.

Owner of recordWarsh, Mary FMailing address: 0816 William St, 21230Observed Sep 20, 2026 · Baltimore City Real Property Information (Open Baltimore)

Parcel 0906 008 · Public research profile

Motivated Seller IndexDRAFT MODEL

66/100

About 5.5 in 100 homes with these signals sold within five months (1.9× the Baltimore rate)100% of model checks have usable evidence

A measured sell-signal score from public records: 2 positive signals observed. It is a base rate for homes like this, not a statement about this owner. How it works ↓

Satellite · © Google

Street View · © Google

Satellite · © Google

Assessed valueUnavailable

Tax statusUnverified

Ownership tenureUnverified

Property typeRowhouse (DHCD use 1008)

THE INDEX

Why this MSI reads 66

Draft model

2 of 18 checked public signals observed, covering 100% of the model. The score is public; the signal-by-signal reasons, source documents, and owner details are in LienSuite.

Method and limits. MSI v0.2-baltimore-2026-09 weights eighteen public signals by how much each one changed the recorded five-month arm’s-length transfer rate across all 180,000 residential parcels in Baltimore City, using only dated records (SDAT transfers, vacant-building notices, tax-sale lists, permits and 311 requests) so no signal reads the buyer’s state, checked on a holdout the model never saw (the top 0.5% of homes by score sold at 4.5x the citywide rate, the top 1% at 4.2x).: use / occupancy permit +24, vacant-building 311 request +17, alteration / rehab permit +14, building-permit 311 complaint +13, high grass and weeds 311 request +12, bought since 2024 +10, abandoned-vehicle 311 request +6, trade permit +5, sanitation / dumping 311 request +5, on the 2022 or 2023 tax-sale list +4, vacant building notice +3, demolition permit +3, exterior permit +2, structure-maintenance 311 request +2, permit valued at $25,000 or more -3, owned for 20 years or more -4, rodent 311 request -7, vacant building notice issued this year -11. The "in 100 homes" figure is the model's fitted probability for this combination of signals. It describes homes like this one in aggregate; it is not a claim about this owner's intentions, and it is not LienSuite's paid deal score.

THE RECORD

Property details

Dated sources

Property type: Rowhouse (DHCD use 1008)
Owner of record: Warsh, Mary F (mailing address 0816 William St, 21230)
Homestead / principal residence: Owner-occupied principal residence (Permanent Home indicator H)
Vacant building notice: None open
Structure area: 1,942 sq ft
Lot size: 14X81
Year built: 1880
Last recorded transfer: $420,000, private arms-length transfer, improved, November 27, 2018; 3 transfers on the SDAT record
Permits: 1 DHCD permit in the last 12 months: replace in kind, 6 double hung windows on the rear of the home. 1- 3rd (July 11, 2026)

Parcel reference: 0906 008. Facts reflect the listed observation dates and may have changed since then.

OWNERSHIP AND TAXES

Research snapshot

Observed tax balanceNot verified

Delinquency periodNot verified

Last recorded transferNot connected

Transfer amountNot connected

Source details not yet connected. A tax balance is not proof that a property is for sale.

CHANGES OVER TIME

Property timeline

Jul 11, 2026
Permit
Replace in kind, 6 Double Hung windows on the rear of the home. 1- 3rd floor 2- 2nd floor 3- 1st floor Approved as per CHAP ATP. At the rear elevation, replace six windows at the 1st, 2nd, and 3rd floors with 6/6 double hung fiberglass clad wood windows. Windows to have white exterior sash finish to match existing. Windows to fit the existing historic masonry openings with no additional framing or filler. New windows to be Marvin Elevate with exterior and interior simulated divided lites. Mary Warsh.
DHCD housing and building permits (Open Baltimore) · checked Sep 20, 2026
Nov 27, 2018
Recorded transfer
$420,000, private arms-length transfer, improved.
Maryland SDAT Baltimore City real property assessments (opendata.maryland.gov) · checked Sep 20, 2026
Nov 20, 2013
Recorded transfer
Consideration not stated, private non-arms-length transfer such as a foreclosure, gift or auction.
Maryland SDAT Baltimore City real property assessments (opendata.maryland.gov) · checked Sep 20, 2026
Dec 14, 2005
Recorded transfer
$632,500, private arms-length transfer, improved.
Maryland SDAT Baltimore City real property assessments (opendata.maryland.gov) · checked Sep 20, 2026

NEARBY

More records nearby

Other homes on William St

Highest sell signal in 21230

Facts on this page reflect their observation dates. Confirm the parcel and current records with the county before acting.