642 Williamson Dr, Mount Pleasant, SC 29464 Property Records

Charleston County property record for 642 Williamson Dr, Mount Pleasant, SC 29464

Property Summary

Property Type	Single Family Home
Details	4 bd · 3 ba · 1,849 sqft · built 1980
Lot Size	0.33 acres (14,375 sqft)
Owner	2 Individual Names on Record
Last Sale	$950,000 (Mar 2026)
Tax Bill	$1,767 (2025)
Deeds & Mortgages	Feb 2022 Mortgage Mar 2026 Sale & Mortgage + 2 more
Flood Zone	Zone X (moderate risk)
APN	`517-04-00-166`

Property Details

APN / Parcel Number

Primary APN	`517-04-00-166`

Interior

Bedrooms	4 Beds
Full Baths	3 Baths
Stories	1 Story
Building Area	1,849 sqft Living Area
1st Floor Area	1,849 sqft
Fireplaces	1 Fireplace
Fireplace	Fireplace

Exterior

Year Built	Built 1980
Effective Year Built	Effective 1980
Architectural Style	Ranch
Exterior Material	Wood Siding
Foundation Type	Slab (Mat/Raft)
Roof Type	Hip
Roof Material	Asphalt
Lot Area	14,375 sqft (0.33 acres)
Lot Dimensions	154 ft deep x 92 ft wide

Exterior Amenities

Porch	Slab
Porch Area	36 sqft
Deck Area	192 sqft
Patio Area	192 sqft

Utilities, Heating & Cooling

Heating System	Heat Pump

Location & Zoning

Street Address	642 WILLIAMSON DR
City	MOUNT PLEASANT
State	SC
Zip	29464-3520
Property Category	Residential
Property Type	Residential > Single Family > Home
Legal Description	SUBDIVISION NAME -BAY TREE DESCRIPTION -LOT SF-1
Legal Subdivision	BAY TREE
Legal Lot Number	S,F-1
Jurisdiction	CHARLESTON SC
Township / Civil Division	MOUNT PLEASANT
Census Block Group	3
Census Block	3006
Census Tract	4607

Owner

Source: Charleston County records, as of September 23, 2026

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

Owner of Record	2 Individual Names on Record
Mailing Address	642 WILLIAMSON DR, MOUNT PLEASANT, SC 29464-3520
Occupancy	Owner Occupied
Owner Type	Individual
Vesting	Joint Tenants

Deeds, Mortgages & Sale History

Date	Document
Feb 7, 2022	Deed of Trust, Mortgage · Conventional Mortgage PRIMELENDING
Mar 19, 2026	Warranty Deed, Transfer · Conventional Mortgage GUILD MORTGAGE CO
Apr 24, 2020	Deed of Trust, Mortgage · Conventional Mortgage CBC NAT'L BK MTG
Feb 15, 2018	Deed of Trust, Mortgage · Line of Credit WELLS FARGO BK

Assessor's Deed Record

Deed Names	2 Names on Deed
Last Sale	Mar 19, 2026 · Amount on Record
Deed Sale	Mar 19, 2026 · Amount on Record
Prior Sale	May 23, 2006 · Amount on Record
Deed Book / Page	1376 / 552
Record Updated	Oct 29, 2026

February 2022: Deed of Trust, Mortgage

Document Type	Deed of Trust
Jurisdiction	CHARLESTON SC
Property Address	642 WILLIAMSON DR, MOUNT PLEASANT, SC 29464-3520
Transaction Type	Mortgage
Record Updated	Apr 8, 2026

Transferred To (Grantee/Buyer)

Name	Verified Name

Mortgage

Document Number	0010750713
Date	Feb 7, 2022
Book Page	1075/713

Lender

Name	PRIMELENDING
Type	Mortgage Company
Address	DALLAS, TX 75252

Agreement

Type	Conventional Mortgage
Amount	Amount Recorded
Term	361 Months
Due	Mar 1, 2052

March 2026: Warranty Deed, Transfer

Document Type	Warranty Deed
Jurisdiction	CHARLESTON SC
Recording Date	Mar 19, 2026
Property Address	642 WILLIAMSON DR, MOUNT PLEASANT, SC 29464-3520
Document Number	0013760552
Book / Page	1376 / 552
Map Reference	MB AO PG 20
Instrument Date	Mar 16, 2026
Transaction Type	Transfer
Record Updated	Apr 8, 2026

Transaction

Amount	Amount Recorded
Downpayment	Downpayment on Record
Loan-to-Value (LTV)	LTV on Record
Tax	$2,470.00
Amount Accuracy	Verified / From Affidavit
Additional	Arm's Length

Transferred From (Grantor/Seller)

Name	Verified Name

Transferred To (Grantee/Buyer)

Name	Verified Name
Relationship	Joint Tenants with Right of Survivorship
Address	642 WILLIAMSON DR, MOUNT PLEASANT, SC 29464-3520

Mortgage

Document Number	0001376553
Date	Mar 19, 2026
Instrument	1376/553

Lender

Name	GUILD MORTGAGE CO
Type	Mortgage Company

Agreement

Type	Conventional Mortgage
Amount	Amount Recorded
Term	361 Months
Due	Apr 1, 2056

April 2020: Deed of Trust, Mortgage

Document Type	Deed of Trust
Jurisdiction	CHARLESTON SC
Property Address	642 WILLIAMSON DR, MOUNT PLEASANT, SC 29464-3520
Document Number	0878/0401
Instrument Date	Apr 24, 2020
Transaction Type	Mortgage
Record Updated	Jun 3, 2020
Title Company	NOT AVAILABLE

Transferred To (Grantee/Buyer)

Name	Verified Name
Relationship	Married Couple
Address	642 WILLIAMSON DR MOUNT PLEASANT SC 294643520, MOUNT PLEASANT, SC 29464-3520

Mortgage

Document Number	0878/0401
Date	Apr 29, 2020
Book Page	000878/000401

Lender

Name	CBC NAT'L BK MTG
Address	ALPHARETTA, GA 30022

Agreement

Type	Conventional Mortgage
Amount	Amount Recorded
Term	360 Months
Due	Apr 28, 2050

February 2018: Deed of Trust, Mortgage

Document Type	Deed of Trust
Jurisdiction	CHARLESTON SC
Property Address	642 WILLIAMSON DR, MOUNT PLEASANT, SC 29464-3520
Document Number	0701/0279
Instrument Date	Feb 15, 2018
Transaction Type	Mortgage
Record Updated	Mar 16, 2018
Title Company	AMERICAN TITLE COMPANY

Transferred To (Grantee/Buyer)

Name	Verified Name
Relationship	Joint Tenants with Right of Survivorship
Address	642 WILLIAMSON DR MOUNT PLEASANT SC 294643520, MOUNT PLEASANT, SC 29464-3520

Mortgage

Document Number	0701/0279
Date	Feb 27, 2018
Book Page	000701/000279

Lender

Name	WELLS FARGO BK
Type	Bank
Address	SIOUX FALLS, SD 57104

Agreement

Type	Line of Credit
Amount	Amount Recorded
Term	360 Months
Due	Feb 26, 2048

Interest

Rate Type	Adjustable Rate

Tax Assessment & Valuation

Source: Charleston County assessment roll, as of August 1, 2025

Property Jurisdictions

Type	Name
State	South Carolina
County	Charleston County
Municipality	Mount Pleasant Town
Unified School District	Charleston County School District (PK - 12)

Tax Bill & Assessment History

Year	Tax Bill	Assessed Value	Assessed Market Value
2025	$1,767.00 (+11.76%)	$435,632 (+2,775.46%) Land $291,770 Building $143,862	$807,400 (+90.32%) Land $360,000 Building $447,400
2024	$1,581.00 (+9.87%)	$15,150 (-)
2022	$1,439.00	$15,150	$424,241 (-) Land $284,141 Building $140,100
2020			$424,241 Land $284,141 Building $140,100

Assessed value is set for property tax purposes, not a market price estimate; it is a fraction of this property's market value.

Flood

Source: FEMA National Flood Hazard Layer, effective September 9, 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 100 ft
Flood Insurance Requirement	Not required lenders may require it
Flood Insurance Cost	Premium on Record median of 177 policies
Community Rating System	Class 5 (25% premium discount)
Nearby Flood Policies	177 in force
Nearby Flood Claims	89 (1982–2025)
Claims Outside the SFHA	36 of 89
Most Recent Claim	Jun 2025 · rainfall accumulation
Claims by Event	Hurricane Matthew, Oct 2016 · 5 claims Severe Storms And Flooding, Oct 2015 · 4 claims Hurricane Hugo, Sep 1989 · 54 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	Low lower than 97% of the US · lower than 99.1% of South Carolina
Wildfire Likelihood	Under 0.01% annual chance
Exposure	None beyond 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	MT PLEASANT WATERWORKS serves 91,500 people · EPA ID SC1010002
Water Source	Purchased surface water from CHARLESTON WATER SYSTEM
Last State Inspection	Dec 2022
Lead	1 ppb (2024–2026) action level 15 ppb

Violations Reported to EPA

Water Quality	None last 10 years
Treatment and Procedure	None last 10 years
Monitoring and Reporting	None 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 263 locations within half a mile, as of December 31, 2025

Provider	Max Down / Up (Mbps)
Xfinity Cable	2,000 / 250
T-Mobile Fixed Wireless	100 / 20
AT&T DSL · Fiber in parts of the area	100 / 20

May also be available: Verizon, WOW Internet, Cable & Phone.

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