Boulder County property records for 16 addresses on Marathon Rd, Niwot, CO · Last verified August 2026
| Properties | 16 |
|---|---|
| Median Sale Price | $1,175,000 |
| Deeds and Mortgages on File | 24 |
| Median Price per Sqft | $375 |
| Owner Occupied | 94% |
| Median Annual Tax Bill | $6,418 |
| Median Year Built | 1967 |
| Median Ownership Tenure | 26 years |
Owner names and prior sale amounts shown locked below are available instantly with a free trial.
3 bd · 1.75 ba · 2,086 sqft · built 1968 · 0.728 acres
| Last Sale | Tax Bill | Prior Sale | Owner | Records |
|---|---|---|---|---|
| $104,000Aug 1983 | $6,2652025 | —Aug 1967 | 2 Owners on Record Owner Occupied | AssessorUpdated Jun 2026 |
4 bd · 5.25 ba · 3,128 sqft · built 1968 · 1.02 acres
| Last Sale | Tax Bill | Prior Sale | Owner | Records |
|---|---|---|---|---|
| $1,175,000Sep 2021 | $8,6332025 | Amount on Record Jun 2016 | 2 Owners on Record Owner Occupied | Assessor + 1 DocumentUpdated Jun 2026 |
4 bd · 1.75 ba · 2,376 sqft · built 1967 · 0.759 acres
| Last Sale | Tax Bill | Prior Sale | Owner | Records |
|---|---|---|---|---|
| $1,180,000May 2026 | $5,3942025 | Amount on Record Dec 2024 | Owner on Record Owner Occupied | Assessor + 2 DocumentsUpdated Jun 2026 |
5 bd · 2.5 ba · 2,884 sqft · built 1968 · 0.989 acres
| Last Sale | Tax Bill | Prior Sale | Owner | Records |
|---|---|---|---|---|
| $305,000May 2000 | $6,4182025 | Amount on Record Feb 1986 | 2 Owners on Record Owner Occupied | AssessorUpdated Jun 2026 |
4 bd · 1.75 ba · 2,244 sqft · built 1966 · 1.04 acres
| Last Sale | Tax Bill | Prior Sale | Owner | Records |
|---|---|---|---|---|
| $131,500Jul 1990 | $5,6082025 | Amount on Record Aug 1978 | Owner on Record Owner Occupied | AssessorUpdated Jun 2026 |
3 bd · 3 ba · 3,802 sqft · built 1967 · 0.75 acres
| Last Sale | Tax Bill | Prior Sale | Owner | Records |
|---|---|---|---|---|
| $1,712,754Nov 2023 | $9,9442025 | Amount on Record Oct 2023 | Owner on Record | Assessor + 4 DocumentsUpdated Jun 2026 |
4 bd · 2.75 ba · 3,215 sqft · built 1968 · 0.876 acres
| Last Sale | Tax Bill | Prior Sale | Owner | Records |
|---|---|---|---|---|
| $1,350,000Jul 2024 | $10,0372025 | Amount on Record Mar 2024 | 2 Owners on Record Owner Occupied | Assessor + 4 DocumentsUpdated Aug 2026 |
4 bd · 2.5 ba · 2,556 sqft · built 1967 · 0.711 acres
| Last Sale | Tax Bill | Prior Sale | Owner | Records |
|---|---|---|---|---|
| $645,000Dec 2017 | $7,3242025 | —Feb 1970 | 2 Owners on Record Owner Occupied | Assessor + 6 DocumentsUpdated Jun 2026 |
3 bd · 2.5 ba · 2,625 sqft · built 1967 · 0.695 acres
| Last Sale | Tax Bill | Prior Sale | Owner | Records |
|---|---|---|---|---|
| $400,000Jun 2013 | $8,6042025 | Amount on Record Feb 1968 | 2 Owners on Record Owner Occupied | Assessor + 1 DocumentUpdated Jun 2026 |
4 bd · 1.75 ba · 1,860 sqft · built 1966 · 0.705 acres
| Last Sale | Tax Bill | Prior Sale | Owner | Records |
|---|---|---|---|---|
| $250,000Jun 1998 | $5,4402025 | Amount on Record Dec 1980 | 2 Owners on Record Owner Occupied | AssessorUpdated Jun 2026 |
2 bd · 1.75 ba · 2,100 sqft · built 1967 · 0.684 acres
| Last Sale | Tax Bill | Prior Sale | Owner | Records |
|---|---|---|---|---|
| $201,000May 1995 | $4,9932025 | Amount on Record Oct 1986 | Owner on Record Owner Occupied | Assessor + 2 DocumentsUpdated Aug 2026 |
3 bd · 2.5 ba · 3,272 sqft · built 1967 · 0.679 acres
| Last Sale | Tax Bill | Prior Sale | Owner | Records |
|---|---|---|---|---|
| $420,000Jul 2009 | $5,9362025 | —Jun 1967 | Owner on Record Owner Occupied | AssessorUpdated Jun 2026 |
3 bd · 2.5 ba · 3,370 sqft · built 1967 · 0.69 acres
| Last Sale | Tax Bill | Prior Sale | Owner | Records |
|---|---|---|---|---|
| —May 1988 | $6,3052025 | Amount on Record May 1988 | Owner on Record Owner Occupied | AssessorUpdated Jun 2026 |
4 bd · 1.75 ba · 2,514 sqft · built 1967 · 0.668 acres
| Last Sale | Tax Bill | Prior Sale | Owner | Records |
|---|---|---|---|---|
| $325,000Dec 1999 | $6,2782025 | Amount on Record Jul 1979 | 2 Owners on Record Owner Occupied | AssessorUpdated Jun 2026 |
4 bd · 1.75 ba · 4,618 sqft · built 1970 · 0.921 acres
| Last Sale | Tax Bill | Prior Sale | Owner | Records |
|---|---|---|---|---|
| $315,000Jul 2000 | $8,5322025 | —Jul 2000 | 2 Owners on Record Owner Occupied | Assessor + 3 DocumentsUpdated Aug 2026 |
3 bd · 2.5 ba · 3,059 sqft · built 1969 · 0.836 acres
| Last Sale | Tax Bill | Prior Sale | Owner | Records |
|---|---|---|---|---|
| $244,000May 1996 | $7,3052025 | Amount on Record May 1991 | 2 Owners on Record Owner Occupied | Assessor + 1 DocumentUpdated Jun 2026 |