Monroe County property record for 421 William St, Key West, FL 33040
| Property Type | Single Family Home |
|---|---|
| Details | 4 bd · 5 ba · 2,528 sqft · built 1929 |
| Lot Size | 0.095 acres (4,180 sqft) |
| Owner | Individual Name on Record |
| Last Sale | $2,450,000 (Mar 2021) |
| Tax Bill | $22,985 (2024) |
| Deeds & Mortgages | Mar 2021 Sale & Mortgage |
| Flood Zone | Zone X (minimal risk) |
| APN | 00005920-000000 |
| Primary APN | 00005920-000000 |
|---|---|
| Alternative APNs |
|
| Bedrooms | 4 Beds |
|---|---|
| Full Baths | 5 Baths |
| Half Baths | 1 Half Bath |
| Stories | 3 Stories |
| Building Area | 2,528 sqft Living Area |
| 1st Floor Area | 2,528 sqft |
| Attic Area | 864 sqft |
| Flooring | Wood |
| Interior Walls | Wood |
| Year Built | Built 1929 |
|---|---|
| Effective Year Built | Effective 2018 |
| Exterior Material | Wood |
| Roof Type | Cathedral/Clerestory |
| Roof Material | Metal |
| Lot Area | 4,180 sqft (0.095 acres) |
| Lot Dimensions | 95 ft deep x 44 ft wide |
| Pool Area | 250 sqft |
|---|---|
| Porch | Open Porch |
| Porch Area | 911 sqft |
| Patio Area | 652 sqft |
| Fence | Fence |
| Cooling System | HVAC |
|---|---|
| Heating System | Forced Air |
| Account Number | 1006149 |
|---|---|
| Old Parcel Number | 01010100005920000000 |
| Street Address | 421 WILLIAM ST |
| City | KEY WEST |
| State | FL |
| Zip | 33040-6853 |
| Property Category | Residential |
| Property Type | Residential > Single Family > Home |
| Legal Description | KW PT LOT 4 SQR 34 D4-332 OR593-120 OR615-344 OR643-884 OR1097-435 OR1323-624 OR2240-1094 OR2240-1098 OR2256-1997 OR2409-1874 |
| Legal Range | 25E |
| Legal Township | 68S |
| Legal Section | 06 |
| Legal Subdivision | KEY WEST SQUARE 34 |
| Legal Lot Number | 4 |
| Jurisdiction | MONROE FL |
| Township / Civil Division | KEY WEST |
| Census Block Group | 1 |
| Census Block | 1014 |
| Census Tract | 972500 |
Source: NPS National Register of Historic Places, as of August 1, 2026
| Historic District | Within the Key West Historic District listed 1971 · 189 contributing resources · NRIS 71000245 |
|---|
Federal listing alone does not restrict alterations; local historic district rules, which this data does not cover, may apply.
Source: Monroe County records, as of December 5, 2025
Owner names and exact recorded amounts shown locked on this page are available instantly with a free trial.
| Owner of Record | Individual Name on Record |
|---|---|
| Co-owner | Co-owner on Record |
| Mailing Address | 4207 WINDSOR PKWY, DALLAS, TX 75205-1644 |
| Owner Type | Individual |
| Deed Names | 2 Names on Deed |
|---|---|
| Last Sale | Mar 3, 2021 · Amount on Record |
| Deed Sale | Mar 3, 2021 · Amount on Record |
| Prior Sale | Oct 15, 2013 · Amount on Record |
| Deed Document Number | 2306679 |
| Deed Book / Page | 3079 / 684 |
| Record Updated | Jun 8, 2026 |
| Document Type | Warranty Deed |
|---|---|
| Jurisdiction | MONROE FL |
| Recording Date | Mar 3, 2021 |
| Property Address | 421 WILLIAM ST, KEY WEST, FL 33040-6853 |
| Document Number | 0030790684 |
| Book / Page | 3079 / 684 |
| Instrument Date | Feb 24, 2021 |
| Instrument | 2306679 |
| Transaction Type | Transfer |
| Record Updated | Jul 29, 2022 |
| Title Company | ATTORNEY ONLY, ATTORNEY |
| Amount | Amount Recorded |
|---|---|
| Downpayment | Downpayment on Record |
| Loan-to-Value (LTV) | LTV on Record |
| Tax | $17,150.00 |
| Amount Accuracy | Full Amount Stated |
| Additional |
|
| Name | Verified Name |
|---|---|
| Address | 101 NE 3RD AVE # AVE2000, 101, FORT LAUDERDALE, FL 33301-1162 |
| Name | Verified Name |
|---|---|
| Relationship | Joint Tenants with Right of Survivorship |
| Address | 4207 WINDSOR PKWY, DALLAS, TX 75205-1644 |
| Document Number | 0003079691 |
|---|---|
| Date | Mar 3, 2021 |
| Instrument | 3079/691 |
| Name | FIRST HORIZON BANK |
|---|---|
| Type | Bank |
| Type | Conventional Mortgage |
|---|---|
| Amount | Amount Recorded |
| Term | 360 Months |
| Due | Mar 1, 2051 |
| Rate Type | Adjustable Rate |
|---|---|
| Rate | 3% |
| Type Change Date | Mar 1, 2028 |
| Change Frequency | Annually |
| Min Rate At Change | 3% |
| Max Rate At Change | 8% |
| Index | 1-Year LIBOR |
| Max Rate | 8% |
Source: Monroe County assessment roll, as of July 1, 2025
| Type | Name |
|---|---|
| State | Florida |
| County | Monroe County |
| Municipality | Key West City |
| Unified School District | Monroe County School District (PK - 12) |
| Year | Tax Bill | Assessed Value | Assessed Market Value |
|---|---|---|---|
| 2025 | $2,756,234 (+10.64%) Land $1,449,624 Building $1,306,610 | $2,756,234 (+10.64%) Land $1,449,624 Building $1,306,610 | |
| 2024 | $22,985.00 (+8.22%) | ||
| 2023 | $21,240.00 (+12.59%) | $2,491,077 (+14.39%) Land $1,242,662 Building $1,248,415 | $2,491,077 (+14.39%) Land $1,242,662 Building $1,248,415 |
| 2022 | $18,865.00 | $2,177,658 Land $941,545 Building $1,236,113 | $2,177,658 Land $941,545 Building $1,236,113 |
Assessed value and assessed market value are set for property tax purposes and are not market price estimates.
Source: FEMA National Flood Hazard Layer, effective September 24, 2026 · OpenFEMA NFIP redacted claims and policies, as of September 2026
| FEMA Flood Zone | Zone X minimal risk |
|---|---|
| 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 202 individual policies |
| Community Rating System | Class 5 (25% premium discount) |
| Nearby Flood Policies | 242 units insured incl. 40 condo units |
| Nearby Flood Claims | 400 (1978–2024) |
| Claims Outside the SFHA | 44 of 400 |
| Most Recent Claim | May 2024 · other causes |
| Claims by Event |
|
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.
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.
Source: FCC Broadband Data Collection, based on 922 locations within half a mile, as of December 31, 2025
| Provider | Max Down / Up (Mbps) |
|---|---|
| AT&T Fiber · DSL | 5,000 / 5,000 |
| Xfinity Cable | 2,000 / 250 |
| Verizon Fixed Wireless | 300 / 20 |
| T-Mobile Fixed Wireless | 100 / 20 |
May also be available: Hotwire Communications.
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