Collin County property record for 821 Koby Cir, Prosper, TX 75078
| Property Type | Single Family Home |
|---|---|
| Details | 5 bd · 5 ba · 4,479 sqft · built 2017 |
| Lot Size | 0.335 acres (14,604 sqft) |
| Owner | Company Name on File |
| Tax Bill | $20,319 (2024) |
| Flood Zone | Zone X (minimal risk) |
| APN | R-11391-00L-0030-1 |
| Primary APN | R-11391-00L-0030-1 |
|---|---|
| Alternative APN |
|
| Bedrooms | 5 Beds |
|---|---|
| Full Baths | 5 Baths |
| Total Rooms | 10 Rooms |
| Stories | 2 Stories |
| Building Area | 4,479 sqft Living Area |
| 1st Floor Area | 2,739 sqft |
| 2nd Floor Area | 1,740 sqft |
| Fireplace | Fireplace |
| Year Built | Built 2017 |
|---|---|
| Exterior Material | Brick |
| Construction Type | Wood Frame |
| Lot Area | 14,604 sqft (0.335 acres) |
| Garage Area | 418 sqft |
| Cooling System | Central |
|---|---|
| Heating System | Central |
| Account Number | 2766080 |
|---|---|
| Street Address | 821 KOBY CIR |
| City | PROSPER |
| State | TX |
| Zip | 75078-1892 |
| Property Category | Residential |
| Property Type | Residential > Single Family > Home |
| Legal Description | STAR TRAIL PHASE ONE B (CPR), BLK L, LOT 3 |
| Legal Subdivision | STAR TRAIL |
| Legal Phase | 1 |
| Legal Block | L |
| Legal Lot Number | 3 |
| Jurisdiction | COLLIN TX |
| Township / Civil Division | CELINA |
| Census Block Group | 4 |
| Census Block | 4009 |
| Census Tract | 30304 |
Source: Collin County records · APN R-11391-00L-0030-1
Assessment roll updated August 1, 2025 · Last verified November 2025
Owner names and exact recorded amounts shown locked on this page are available instantly with a free trial.
| Owner of Record | Company Name on File |
|---|---|
| Mailing Address | 2557 SW GRAPEVINE PKWY STE 100, 100, GRAPEVINE, TX 76051-7094 |
| Owner Type | Company |
| Deed Names | Verified Name on Deed |
|---|---|
| Last Sale | Dec 07, 2017 |
| Deed Sale | Dec 07, 2017 |
| Deed Document Number | 20171208001625900 |
| Record Updated | Jun 08, 2026 |
Source: Collin County records · Assessment roll updated August 1, 2025 · Last verified November 2025
| Type | Name |
|---|---|
| State | Texas |
| County | Collin County |
| Municipality | Prosper Town |
| Unified School District | Prosper Independent School District (PK - 12) |
Assessed value and assessed market value are set for property tax purposes and are not market price estimates.
| Year | Tax Bill | Assessed Value | Assessed Market Value |
|---|---|---|---|
| 2025 | $930,409 (-7.55%) Land $243,750 Building $686,659 | $930,409 (-7.55%) Land $243,750 Building $686,659 | |
| 2024 | $20,319.00 (+17.82%) | ||
| 2023 | $1,006,361 Land $240,625 Building $765,736 | $1,006,361 Land $240,625 Building $765,736 | |
| 2022 | $17,246.00 |
Source: FEMA National Flood Hazard Layer as of October 13, 2026 · FEMA NFIP claims and policies as of September 2026 · USDA Forest Service Wildfire Risk to Communities as of 2024 · Last verified October 2026
| FEMA Flood Zone | Zone X minimal risk |
|---|---|
| Flood Insurance Requirement | Not required lenders may require it |
| Flood Insurance Cost | Premium on Record median of 10 policies |
| Nearby Flood Policies | 10 in force |
| Wildfire Risk | Not rated no burnable land within ember reach |
|---|
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: FCC Broadband Data Collection as of December 31, 2025 · Last verified October 2026
| Provider | Max Down / Up (Mbps) |
|---|---|
| AT&T Fiber | 5,000 / 5,000 |
| AMG Technology Investment Group Fixed Wireless | 1,000 / 1,000 |
| Optimum Communications Fiber · Cable | 940 / 940 |
| Verizon Fixed Wireless | 300 / 20 |
| ElektraFi Fixed Wireless | 100 / 20 |
May also be available: Hotwire Communications.
Based on FCC filings for 229 locations within half a mile of this property.
Source: EPA Safe Drinking Water Information System as of 2026 Q3 · EPA water system boundaries as of March 2026 · Last verified October 2026
| Water System | TOWN OF PROSPER serves 42,598 people |
|---|---|
| Water Source | Purchased surface water from NORTH TEXAS MWD WYLIE WTP |
| Last State Inspection | Apr 2025 |
| Lead | 2 ppb (2022–2024) action level 15 ppb |
| 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 as reported to EPA, not water tested at this address; lead at the tap also depends on the building's own pipes. The full violation and enforcement history is in the system's EPA record.
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