644 Nelms St, Duncan, OK 73533 Property Records

Stephens County property record for 644 Nelms St, Duncan, OK 73533

Property Summary

Property Type	Single Family Home
Details	3 bd · 1 ba · 1,228 sqft · built 1950
Lot Size	0.211 acres (9,209 sqft)
Owner	Individual Name on File
Last Sale	$37,000 (Sep 2023)
Tax Bill	$344 (2025)
Deeds & Mortgages	Sep 2023 Sale
Flood Zone	Zone X (minimal risk)
APN	`20701`

Property Details

APN / Parcel Number

Primary APN	`20701`
Alternative APN	`1470-00-003-001-0-000-00`

Interior

Bedrooms	3 Beds
Full Baths	1 Bath
Total Rooms	5 Rooms
Stories	1 Story
Building Area	1,228 sqft Living Area
Storm Shelter	Storm Shelter
Storm Shutters	Storm Shutters

Exterior

Year Built	Built 1950
Effective Year Built	Effective 1990
Architectural Style	Traditional
Exterior Material	Fiber Cement Siding
Construction Type	Frame
Roof Type	Hip
Roof Material	Composition Shingle
Lot Area	9,209 sqft (0.211 acres)

Exterior Amenities

Pool Type	Above-Ground Pool
Porch	Slab
Porch Area	70 sqft
Shed	1 Shed
Shed Area	99 sqft

Utilities, Heating & Cooling

Cooling System	Central
Heating System	Central

Location & Zoning

Account Number	20701
Street Address	644 NELMS ST
City	DUNCAN
State	OK
Zip	73533-3824
Property Category	Residential
Property Type	Residential > Single Family > Home
Local Zoning Code	R1
Legal Description	BLK 3 LOT 1 SMITH ADD N (608 NELMS)
Legal Range	07W
Legal Township	01N
Legal Section	32
Legal Subdivision	SMITH ADDITION
Legal Block	3
Legal Lot Number	1
Jurisdiction	STEPHENS OK
Township / Civil Division	DUNCAN
Census Block Group	1
Census Block	1025
Census Tract	200

Owner

644 Nelms St is owned by an individual who bought it in September 2023.

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

Owner of Record	Individual Name on File
Mailing Address	4718 PLUM DR, DICKINSON, TX 77539-6668
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

Assessor's Deed Record

Deed Names	Name on Deed
Last Sale	Sep 28, 2023 · Amount on File
Deed Sale	Sep 28, 2023 · Amount on File
Prior Sale	May 13, 2022 · Amount on File
Deed Document Number	20239249
Deed Book / Page	6400 / 47
Prior Transfer Date	Jan 26, 2010
Prior Transfer Doc	003964/148
Record Updated	Oct 29, 2026

September 2023: Warranty Deed, Transfer

Document Type	Warranty Deed
Jurisdiction	STEPHENS OK
Recording Date	Sep 28, 2023
Property Address	644 NELMS ST, DUNCAN, OK 73533-3824
Document Number	0006400/47
Book / Page	6400 / 47
Instrument Date	Sep 28, 2023
Instrument	I-2023-009249
Transaction Type	Transfer
Record Updated	Oct 16, 2023
Title Company	STEPHENS COUNTY ABSTRACT COMPANY, STEPHENS COUNTY ABSTRACT CO

Transaction

Amount	Amount on Record
Tax	$55.50
Amount Accuracy	Rounded by County
Additional	Arm's Length

Transferred From (Grantor/Seller)

Name	Verified Name

Transferred To (Grantee/Buyer)

Name	Verified Name
Address	4718 PLUM DR, DICKINSON, TX 77539-6668

Tax Assessment & Valuation

The 2025 property tax bill for 644 Nelms St was $344.

Source: Stephens County assessment roll, as of March 23, 2026

Property Jurisdictions

Type	Name
State	Oklahoma
County	Stephens County
Municipality	Duncan City
Unified School District	Duncan Public Schools (PK - 12)

Tax Bill & Assessment History

Year	Tax Bill	Assessed Value	Assessed Market Value
2026		$3,992 (-2.32%) Land $418 Building $3,574	$36,289 (-2.33%) Land $3,802 Building $32,487
2025	$344.00	$4,087 Land $418 Building $3,669	$37,153 Land $3,802 Building $33,351
2023	$500.00 (+47.93%)	$5,849 (+46.81%) Land $418 Building $5,431	$53,171 (+26.23%) Land $3,802 Building $49,369
2022	$338.00	$3,984 Land $418 Building $3,566	$42,123 Land $3,802 Building $38,321

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 644 Nelms St in Zone X, an area of minimal flood risk.

Source: FEMA National Flood Hazard Layer, effective September 29, 2010

FEMA Flood Zone	Zone X minimal risk
Flood Insurance Requirement	Not required lenders may require it

Values are read at the parcel center point; lenders make the official flood determination.

Wildfire

Wildfire risk around 644 Nelms St is low, with a 0.02% 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 97.7% of Oklahoma
Wildfire Likelihood	0.02% 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	DUNCAN PUBLIC UTILITIES AUTHORITY serves 23,000 people · EPA ID OK1010809
Water Source	Surface water
Last State Inspection	Sep 2024
Lead	Under 1 ppb (2022–2024) action level 15 ppb

Violations Reported to EPA

Water Quality	Total trihalomethanes not recorded as resolved · Jan 2023 Haloacetic acids resolved · Jul 2017 Turbidity resolved · Dec 2016
Treatment and Procedure	Organic carbon removal Oct 2024
Monitoring and Reporting	6 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 486 locations within half a mile, as of December 31, 2025

Provider	Max Down / Up (Mbps)
Dobson Fiber Fiber	10,000 / 10,000
Sparklight Cable	1,000 / 50
Nextlink Fixed Wireless	500 / 100
360 Broadband Fixed Wireless	400 / 50
Verizon Fixed Wireless	300 / 20