4438 Sidewinder Loop, Castle Rock, CO 80108 Property Records

Douglas County property record for 4438 Sidewinder Loop, Castle Rock, CO 80108

Property Summary

Property Type	Single Family Home
Details	4 bd · 3 ba · 3,325 sqft · built 2018
Lot Size	0.152 acres (6,621 sqft)
Owner	2 Individual Names on Record
Last Sale	$865,000 (May 2026)
Tax Bill	$5,468 (2025)
Deeds & Mortgages	May 2026 Sale & Mortgage Oct 2018 Sale
Flood Zone	Zone X (minimal risk)
APN	`2507-06-4-07-021`

Property Details

APN / Parcel Number

Primary APN	`2507-06-4-07-021`
Alternative APNs	`R0489539` `0489539`

Interior

Bedrooms	4 Beds
Full Baths	3 Baths
Stories	2 Stories
Building Area	3,325 sqft Living Area
Gross Area	4,852 sqft
Basement Area	1,527 sqft
Fireplaces	1 Fireplace
Fireplace	Fireplace

Exterior

Year Built	Built 2018
Effective Year Built	Effective 2018
Exterior Material	Aluminum/Vinyl
Construction Type	Frame
Roof Type	Gable
Roof Material	Composition Shingle
Lot Area	6,621 sqft (0.152 acres)
Garage Area	654 sqft
Porch	Porch
Porch Area	333 sqft

Utilities, Heating & Cooling

Cooling System	Central
Heating System	Central

Location & Zoning

Account Number	R0489539
Street Address	4438 SIDEWINDER LOOP
City	CASTLE ROCK
State	CO
Zip	80108-2818
Property Category	Residential
Property Type	Residential > Single Family > Home
Legal Description	LOT 37 BLOCK 1 CASTLE OAKS ESTATES 5 0.152 AM/L
Legal Range	66W
Legal Township	08S
Legal Section	06
Legal Quarter	SE
Legal Subdivision	CASTLE OAKS ESTATES
Legal Block	1
Legal Lot Number	37
Jurisdiction	DOUGLAS CO
Township / Civil Division	PARKER
Census Block Group	6
Census Block	6000
Census Tract	14013

Owner

Source: Douglas County records, as of June 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	4438 SIDEWINDER LOOP, CASTLE ROCK, CO 80108-2818
Occupancy	Owner Occupied
Owner Type	Individual
Vesting	Joint Tenants

Deeds, Mortgages & Sale History

Date	Document
May 18, 2026	Special Warranty Deed, Transfer · Conventional Mortgage NEXBANK
Oct 23, 2018	Grant Deed, Subdivision Related Transfer HERITAGE TITLE COMPANY

Assessor's Deed Record

Deed Names	2 Names on Deed
Last Sale	May 18, 2026 · Amount on Record
Deed Sale	May 18, 2026 · Amount on Record
Prior Sale	Oct 23, 2018 · Amount on Record
Deed Document Number	202624398
Record Updated	Sep 20, 2026

May 2026: Special Warranty Deed, Transfer

Document Type	Special Warranty Deed
Jurisdiction	DOUGLAS CO
Recording Date	May 18, 2026
Property Address	4438 SIDEWINDER LOOP, CASTLE ROCK, CO 80108-2818
Document Number	0000024398
Instrument Date	May 15, 2026
Instrument	2026.24398
Transaction Type	Transfer
Record Updated	May 28, 2026
Title Company	LAND TITLE GUARANTY COMPANY IN, LAND TITLE GUARANTEE COMPANY

Transaction

Amount	Amount Recorded
Downpayment	Downpayment on Record
Loan-to-Value (LTV)	LTV on Record
Tax	$8,736.50
Amount Accuracy	Calculated from Transfer Tax
Additional	Arm's Length

Transferred From (Grantor/Seller)

Name	Verified Name

Transferred To (Grantee/Buyer)

Name	Verified Name
Relationship	Joint Tenants
Address	4438 SIDEWINDER LOOP, CASTLE ROCK, CO 80108-2818

Mortgage

Document Number	0000024399,
Date	May 18, 2026
Instrument	2026..24399

Lender

Name	NEXBANK

Agreement

Type	Conventional Mortgage
Amount	Amount Recorded
Term	360 Months
Due	Jun 1, 2056

Interest

Rate Type	Fixed Rate
Rate	6.46%
Initial Type	Fixed Rate
Max Rate	-1%

October 2018: Grant Deed, Subdivision Related Transfer

Document Type	Grant Deed
Jurisdiction	DOUGLAS CO
Recording Date	Oct 23, 2018
Property Address	4438 SIDEWINDER LOOP, CASTLE ROCK, CO 80108-2818
Document Number	0000064385
Instrument Date	Oct 22, 2018
Instrument	64385
Transaction Type	Subdivision Related Transfer
Record Updated	Nov 8, 2018
Title Company	HERITAGE TITLE COMPANY

Transaction

Amount	Amount Recorded
Tax	$52.00
Amount Accuracy	Confirmed
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	4438 SIDEWINDER LOOP CASTLE ROCK CO 801082818, CASTLE ROCK, CO 80108-2818

Tax Assessment & Valuation

Source: Douglas County assessment roll, as of June 23, 2026

Property Jurisdictions

Type	Name
State	Colorado
County	Douglas County
Municipality	Castle Rock Town
Unified School District	Douglas County School District RE-1 (PK - 12)

Tax Bill & Assessment History

Year	Tax Bill	Assessed Value	Assessed Market Value
2026		$53,060 (-) Land $10,540 Building $42,520	$780,225 (-) Land $154,993 Building $625,232
2025	$5,468.00 (-4.79%)	$53,060 (-8.53%) Land $10,540 Building $42,520	$780,225 (-9.89%) Land $154,993 Building $625,232
2024	$5,743.00 (-0.9%)
2023	$5,795.00	$58,010 Land $8,930 Building $49,080	$865,838 Land $133,267 Building $732,571

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

Source: FEMA National Flood Hazard Layer, effective June 4, 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
Nearby Flood Policies	3 in force
Nearby Flood Claims	1 (2023)
Claims Outside the SFHA	1 of 1
Most Recent Claim	May 2023 · rainfall accumulation

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 67% of the US · lower than 84% of Colorado
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	TOWN OF CASTLE ROCK serves 110,298 people · EPA ID CO0118010
Water Source	Surface water
Last State Inspection	Sep 2024
Lead	2 ppb (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	2 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 399 locations within half a mile, as of December 31, 2025

Provider	Max Down / Up (Mbps)
CenturyLink Fiber · DSL in parts of the area	2,000 / 1,000
Xfinity Cable	2,000 / 250
Kellin Communications Fixed Wireless	1,000 / 220
Verizon Fixed Wireless	300 / 20
T-Mobile Fixed Wireless	100 / 20
AT&T Fixed Wireless	100 / 20

May also be available: Aerux Broadband, BAM Broadband, Xtream Internet.

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