638 Williamson Dr, Mount Pleasant, SC 29464 Property Records

Charleston County property record for 638 Williamson Dr, Mount Pleasant, SC 29464

Property Summary

Property Type	Single Family Home
Details	3 bd · 2 ba · 1,592 sqft · built 1984
Lot Size	0.3 acres (13,068 sqft)
Owner	Individual Name on File
Last Sale	$765,000 (Apr 2023)
Tax Bill	$2,929 (2025)
Deeds & Mortgages	Apr 2023 Sale & Mortgage May 2019 Mortgage
Flood Zone	Zone X (minimal risk)
APN	`517-04-00-355`

Property Details

APN / Parcel Number

Primary APN	`517-04-00-355`

Interior

Bedrooms	3 Beds
Full Baths	2 Baths
Stories	1 Story
Building Area	1,592 sqft Living Area
1st Floor Area	1,592 sqft
Fireplaces	1 Fireplace
Fireplace	Fireplace

Exterior

Year Built	Built 1984
Effective Year Built	Effective 1984
Exterior Material	Wood Siding
Foundation Type	Slab (Mat/Raft)
Roof Type	Gable
Roof Material	Asphalt
Lot Area	13,068 sqft (0.3 acres)
Lot Dimensions	141 ft deep x 92 ft wide
Garage Type	Attached
Garage Area	594 sqft
Parking Spaces	2 Parking Spaces

Exterior Amenities

Porch	Slab
Porch Area	170 sqft
Deck Area	312 sqft
Patio Area	312 sqft

Utilities, Heating & Cooling

Heating System	Heat Pump

Location & Zoning

Street Address	638 WILLIAMSON DR
City	MOUNT PLEASANT
State	SC
Zip	29464-3520
Property Category	Residential
Property Type	Residential > Single Family > Home
Legal Description	SUBDIVISION NAME -COOPER ESTATES DESCRIPTION -LOT 11A BLK J
Legal Subdivision	COOPER ESTATES
Legal Block	J
Legal Lot Number	11A
Jurisdiction	CHARLESTON SC
Township / Civil Division	MOUNT PLEASANT
Census Block Group	3
Census Block	3006
Census Tract	4607

Owner

638 Williamson Dr is owned and occupied by an individual who bought it in April 2023.

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

Owner of Record	Individual Name on File
Mailing Address	638 WILLIAMSON DR, MOUNT PLEASANT, SC 29464-3520
Occupancy	Owner Occupied
Owner Type	Individual

Owner names and exact recorded amounts are on file and can be viewed instantly on this page with a free 10-day trial.

Deeds, Mortgages & Sale History

Date	Document
Apr 11, 2023	Deed, Transfer · Conventional Mortgage UNITED COMMUNITY BANK
May 17, 2019	Deed of Trust, Mortgage · Conventional Mortgage QUICKEN LNS

Assessor's Deed Record

Deed Names	Name on Deed
Last Sale	Apr 11, 2023 · Amount on File
Deed Sale	Apr 11, 2023 · Amount on File
Deed Book / Page	1172 / 942
Prior Transfer Date	Dec 13, 2013
Prior Transfer Doc	0379000350
Record Updated	Oct 29, 2026

April 2023: Deed, Transfer

Document Type	Deed
Jurisdiction	CHARLESTON SC
Recording Date	Apr 11, 2023
Property Address	638 WILLIAMSON DR, MOUNT PLEASANT, SC 29464-3520
Document Number	0011720942
Book / Page	1172 / 942
Map Reference	MB AY PG 92
Instrument Date	Mar 27, 2023
Transaction Type	Transfer
Record Updated	Jun 7, 2023
Title Company	WEEKS AND IRVINE LLC, WEEKS & IRVINE LLC

Transaction

Amount	Amount on Record
Downpayment	Downpayment on Record
Loan-to-Value (LTV)	LTV on Record
Tax	$1,989.00
Amount Accuracy	Verified / From Affidavit
Additional	Arm's Length

Transferred From (Grantor/Seller)

Name	Verified Name

Transferred To (Grantee/Buyer)

Name	Verified Name
Address	638 WILLIAMSON DR, MOUNT PLEASANT, SC 29464-3520

Mortgage

Document Number	0001172943
Date	Apr 11, 2023
Instrument	1172/943

Lender

Name	UNITED COMMUNITY BANK
Type	Bank

Agreement

Type	Conventional Mortgage
Amount	Amount on Record
Term	361 Months
Due	May 1, 2053

May 2019: Deed of Trust, Mortgage

Document Type	Deed of Trust
Jurisdiction	CHARLESTON SC
Property Address	638 WILLIAMSON DR, MOUNT PLEASANT, SC 29464-3520
Document Number	0798/0403
Instrument Date	May 17, 2019
Transaction Type	Mortgage
Record Updated	Jun 21, 2019
Title Company	TITLE SERVICE AND LIAISON COMPANIES, INDECOMM GLOBAL SVCS

Transferred To (Grantee/Buyer)

Name	Verified Name
Address	38 WILLIAMSON DR MOUNT PLEASANT SC 29464, MOUNT PLEASANT, SC 29464

Mortgage

Document Number	0798/0403
Date	May 29, 2019
Book Page	000798/000403

Lender

Name	QUICKEN LNS
Type	Funding / Finance Company
Address	DETROIT, MI 48226-1906

Agreement

Type	Conventional Mortgage
Amount	Amount on Record
Term	360 Months
Due	May 28, 2049

Tax Assessment & Valuation

The 2025 property tax bill for 638 Williamson Dr was $2,929, down 1% from the year before.

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	$2,929.00 (-1.01%)	$765,000 (+2,4%) Land $350,000 Building $415,000	$765,000 Land $350,000 Building $415,000
2024	$2,959.00	$30,600
2022	$1,179.00	$12,070	$427,230 Land $284,130 Building $143,100
2020			$765,000 Land $350,000 Building $415,000

Assessed value and assessed market value are set for property tax purposes, not market price estimates; both are a fraction of this property's market value.

Flood

FEMA maps place 638 Williamson Dr in Zone X, an area of minimal flood risk, within 100 ft of a high-risk flood zone.

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 minimal risk
Nearest Special Flood Hazard Area	Zone AE, within 100 ft
Flood Insurance Requirement	Not required lenders may require it
Flood Insurance Cost	Premium on File 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

Wildfire risk around 638 Williamson Dr is low, with less than a 0.01% annual chance of 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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