Seller's Agent in 2025
Maureen McCarthy
RE/MAX
(303) 817-1282
3 in this area
107 Total Sales
512 Marine St Boulder, CO 80302
University Hill NeighborhoodEstimated Value: $4,278,000 - $4,962,000
4
Beds
4.5
Baths
4,904
Sq Ft
$949/Sq Ft
Est. Value
Highlights
- Open Floorplan
- Wolf Appliances
- Wooded Lot
- Flatirons Elementary School Rated A
- Fireplace in Primary Bedroom
- Vaulted Ceiling
About This Home
As of November 2025Located on one of Boulder's most iconic, tree-lined streets, this architecturally rich residence effortlessly blends timeless charm with elevated modern design. Thoughtfully curated and beautifully finished, the main level features sustainably refinished hardwood floors, soaring ceilings, and a striking gourmet kitchen outfitted with a new Sub-Zero refrigerator, Wolf range, and a marble-topped island ideal for gatherings. Refined living and dining spaces exude warmth and character with custom built-ins, designer lighting, and multiple fireplaces.Upstairs, the vaulted primary suite offers a true retreat, complete with its own fireplace, a private balcony, and sweeping Flatiron views. Two additional bedrooms are filled with light and comfort, each enjoying access to a beautifully appointed bath-one en suite, the other just a few steps away. A whimsical "secret" bonus room adds charm and flexibility for imaginative play or clever storage.The lower level expands the living experience with impressive ceiling height, a bright media room, custom shelving, glass-enclosed home office, and a private guest suite with a spa-like bath.Outdoors, the magic continues. The professionally landscaped backyard is a lush and tranquil sanctuary with a newly paved patio, serene waterfall feature, plumbed-in BBQ, and multiple entertaining spaces-plus a storybook two-story playhouse with sandbox and a full sprinkler system for year-round vibrancy. A detached cottage with vaulted ceilings, a kitchenette, and powder room offers flexible bonus space-perfect for a gym, office, studio, guest quarters or teen hangout-while the detached garage boasts epoxy floors and built-in storage. Just moments from top cafes, award-winning restaurants, boutique shopping, Chautauqua Park, and endless hiking trails, this is quintessential Boulder living at its finest.
Last Agent to Sell the Property
RE/MAX of Boulder, Inc License #100019623 Listed on: 09/25/2025
Home Details
Home Type
- Single Family
Est. Annual Taxes
- $25,584
Year Built
- Built in 1903
Lot Details
- 9,947 Sq Ft Lot
- Fenced
- Level Lot
- Sprinkler System
- Wooded Lot
- Landscaped with Trees
Parking
- 2 Car Detached Garage
Home Design
- Victorian Architecture
- Brick Veneer
- Wood Frame Construction
- Composition Roof
Interior Spaces
- 4,904 Sq Ft Home
- 2-Story Property
- Open Floorplan
- Bar Fridge
- Vaulted Ceiling
- Multiple Fireplaces
- Gas Fireplace
- Window Treatments
- Wood Frame Window
- Family Room
- Living Room with Fireplace
- Dining Room
- Home Office
- Recreation Room with Fireplace
- Wood Flooring
- Property Views
Kitchen
- Eat-In Kitchen
- Double Oven
- Gas Oven or Range
- Microwave
- Wolf Appliances
- Kitchen Island
Bedrooms and Bathrooms
- 4 Bedrooms
- Fireplace in Primary Bedroom
- Walk-In Closet
- Primary Bathroom is a Full Bathroom
Laundry
- Laundry on upper level
- Dryer
- Washer
Basement
- Basement Fills Entire Space Under The House
- Sump Pump
Home Security
- Radon Detector
- Fire and Smoke Detector
Outdoor Features
- Balcony
- Patio
- Outdoor Gas Grill
Schools
- Flatirons Elementary School
- Manhattan Middle School
- Boulder High School
Utilities
- Forced Air Heating and Cooling System
- Water Purifier is Owned
- Cable TV Available
Community Details
- No Home Owners Association
- Highland Lawn Subdivision
Listing and Financial Details
- Assessor Parcel Number R0000453
Ownership History
We collect this data history from publicly available records. To have your information removed, we recommend requesting removal directly through your county’s website.
Date
Name
Owned For
Owner Type
Purchase Details
Listed on
Sep 25, 2025
Closed on
Nov 21, 2025
Sold by
Bought by
Seller's Agent
Maureen McCarthy
RE/MAX of Boulder, Inc
Buyer's Agent
Bianca Griffith
RE/MAX of Boulder, Inc
List Price
$4,750,000
Sold Price
$4,650,000
Premium/Discount to List
-$100,000
-2.11%
Views
708
Current Estimated Value
Home Financials for this Owner
Home Financials are based on the most recent Mortgage that was taken out on this home.
Estimated Appreciation
$1,979
Avg. Annual Appreciation
0.07%
Original Mortgage
$3,000,000
Interest Rate
0.063%
Mortgage Type
New Conventional
Purchase Details
Listed on
Jun 18, 2019
Closed on
Jun 18, 2019
Sold by
Bought by
Seller's Agent
Stephen Remmert
Compass - Boulder
Buyer's Agent
Maureen McCarthy
RE/MAX of Boulder, Inc
List Price
$3,495,000
Sold Price
$3,480,000
Premium/Discount to List
-$15,000
-0.43%
Home Financials for this Owner
Home Financials are based on the most recent Mortgage that was taken out on this home.
Avg. Annual Appreciation
4.61%
Original Mortgage
$1,290,000
Interest Rate
0.0362%
Mortgage Type
Adjustable Rate Mortgage/ARM
Purchase Details
Listed on
Aug 14, 2012
Closed on
Oct 29, 2012
Sold by
Bought by
Seller's Agent
Tim Goodacre
milehimodern - Boulder
Buyer's Agent
Stephen Remmert
Compass - Boulder
List Price
$2,350,000
Sold Price
$2,250,000
Premium/Discount to List
-$100,000
-4.26%
Home Financials for this Owner
Home Financials are based on the most recent Mortgage that was taken out on this home.
Avg. Annual Appreciation
6.79%
Purchase Details
Closed on
May 20, 2008
Sold by
Bought by
Home Financials for this Owner
Home Financials are based on the most recent Mortgage that was taken out on this home.
Original Mortgage
$300,000
Interest Rate
0.055%
Mortgage Type
Unknown
Purchase Details
Closed on
Jan 19, 2007
Sold by
Bought by
Home Financials for this Owner
Home Financials are based on the most recent Mortgage that was taken out on this home.
Original Mortgage
$525,000
Interest Rate
0.0712%
Mortgage Type
Unknown
Purchase Details
Closed on
Mar 1, 1995
Sold by
Bought by
Purchase Details
Closed on
Apr 10, 1986
Bought by
Purchase Details
Closed on
Apr 27, 1982
Bought by
Purchase Details
Closed on
Apr 8, 1982
Bought by
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Home Values in the Area
Average Home Value in this Area
Purchase History
We collect this data history from publicly available records. To have your information removed, we recommend requesting removal directly through your county’s website.
| Date | Buyer | Sale Price | Title Company |
|---|---|---|---|
| $4,650,000 | Heritage Title | ||
| $3,480,000 | Heritage Title Co | ||
| $2,250,000 | Heritage Title | ||
| $2,050,000 | None Available | ||
| $700,000 | Big Rock Title | ||
| -- | -- | ||
| -- | -- | ||
| $85,000 | -- | ||
| -- | -- |
Source: Public Records
Mortgage History
We collect this data history from publicly available records. To have your information removed, we recommend requesting removal directly through your county’s website.
| Date | Status | Borrower | Loan Amount |
|---|---|---|---|
| Open | $3,000,000 | ||
| Previous Owner | $1,290,000 | ||
| Previous Owner | $300,000 | ||
| Previous Owner | $525,000 |
Source: Public Records
Property History
We collect this data history from publicly available records. To have your information removed, we recommend requesting removal directly through your county’s website.
| Date | Event | Price | List to Sale | Price per Sq Ft | Prior Sale |
|---|---|---|---|---|---|
| 11/21/2025 11/21/25 | Sold | $4,650,000 | -2.1% | $948 / Sq Ft | |
| 09/25/2025 09/25/25 | For Sale | $4,750,000 | +36.5% | $969 / Sq Ft | |
| 09/17/2019 09/17/19 | Off Market | $3,480,000 | -- | -- | |
| 06/18/2019 06/18/19 | Sold | $3,480,000 | -0.4% | $747 / Sq Ft | View Prior Sale |
| 06/18/2019 06/18/19 | For Sale | $3,495,000 | +55.3% | $750 / Sq Ft | |
| 01/28/2019 01/28/19 | Off Market | $2,250,000 | -- | -- | |
| 10/29/2012 10/29/12 | Sold | $2,250,000 | -4.3% | $483 / Sq Ft | View Prior Sale |
| 09/29/2012 09/29/12 | Pending | -- | -- | -- | |
| 08/14/2012 08/14/12 | For Sale | $2,350,000 | -- | $505 / Sq Ft |
Source: IRES MLS
Tax History
We collect this data history from publicly available records. To have your information removed, we recommend requesting removal directly through your county’s website.
| Year | Tax Paid | Tax Assessment Tax Assessment Total Assessment is a certain percentage of the fair market value that is determined by local assessors to be the total taxable value of land and additions on the property. | Land | Improvement |
|---|---|---|---|---|
| 2026 | $27,328 | $311,827 | $101,884 | $209,943 |
| 2025 | $27,328 | $311,827 | $101,884 | $209,943 |
| 2024 | $25,584 | $286,607 | $93,644 | $192,963 |
| 2023 | $25,140 | $291,108 | $94,336 | $200,457 |
| 2022 | $22,558 | $242,917 | $71,335 | $171,582 |
| 2021 | $21,511 | $249,907 | $73,388 | $176,519 |
| 2020 | $20,115 | $231,082 | $92,450 | $138,632 |
| 2019 | $19,807 | $231,082 | $92,450 | $138,632 |
| 2018 | $17,459 | $201,369 | $80,568 | $120,801 |
| 2017 | $16,912 | $222,625 | $89,072 | $133,553 |
| 2016 | $15,900 | $183,677 | $73,471 | $110,206 |
| 2015 | $15,056 | $149,679 | $81,510 | $68,169 |
| 2014 | $12,585 | $149,679 | $81,510 | $68,169 |
Source: Public Records
Agents Affiliated with this Home
-
Maureen McCarthy
-
Bianca Griffith
Buyer's Agent in 2025
Bianca Griffith
RE/MAX
(720) 404-5611
4 in this area
53 Total Sales
-
Stephen Remmert
Seller's Agent in 2019
Stephen Remmert
Compass - Boulder
(720) 339-5033
9 in this area
100 Total Sales
-
Tim Goodacre
Seller's Agent in 2012
Tim Goodacre
milehimodern - Boulder
(303) 817-9300
4 in this area
78 Total Sales
Map
Source: IRES MLS
MLS Number: IRE1044486
APN: 1461361-05-019
Disclaimer: Certain information contained herein is derived from information provided by parties other than Homes.com. All information provided is deemed reliable, but is not guaranteed to be accurate and should be independently verified.
Information source: Information and Real Estate Services, LLC. Provided for limited non-commercial use only under IRES Rules © Copyright IRES.
Based on information submitted to the MLS GRID. All data is obtained from various sources and may not have been verified by broker or MLS GRID. Supplied Open House Information is subject to change without notice. All information should be independently reviewed and verified for accuracy. Properties may or may not be listed by the office/agent presenting the information. Some IDX listings have been excluded from this website. Listing information is provided exclusively for consumers' personal, non-commercial use and may not be used for any purpose other than to identify prospective properties consumers may be interested in purchasing.
Information deemed reliable but not guaranteed by the MLS.
Based on information submitted to the MLS GRID
Listings courtesy of IRES MLS as distributed by MLS GRID
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