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512 Marine StreetBoulder, CO 80302

For Sale

$4,650,000

Smart Buyer Rebate $46,500

Perfectly located on one of Boulder's most idyllic streets, this exceptional home blends Victorian charm with luxurious modern amenities. The homes' traditional exterior gives way to a welcoming main level that features light-filled spaces, soaring ceilings, a formal dining room perfected for entertaining, and an array of spaces that welcome the outdoors in. The chef's kitchen features a new Sub-Zero fridge, Wolf range, granite topped island, and a walk-in pantry that makes organization easy. Don't miss the cleverly-designed under stair office with secret bookshelf, one of the many special touches that make this home so unique.Upstairs the primary suite features two fireplaces, a generous soaking tub and steam shower in the spa-like bath, soaring ceilings and mountain views. Two more light-filled bedrooms, two full baths and a dedicated laundry room complete the second floor. The lower level includes the large fourth bedroom with an en-suite bath, impressive ceiling height, an office, third living room, and an abundance of useful built-in storage. Step outside to a peaceful retreat of a backyard that includes a waterfall feature, plumbed-in BBQ, multiple outdoor patios, a two story playhouse, and an array of flowers and fruit trees. The separate backyard cottage with vaulted ceilings, a kitchenette, and powder bath creates the ultimate flexibility for a gym, home office, or guest house. The two car garage with epoxy floors and additional storage adds to the comfort and convenience of the home.Walk to trails, downtown restaurants, and all the best that Boulder has to offer. This is Boulder living at its best

Listed by Bianca Griffith

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License #IRP32354

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RE/MAX of Boulder, Inc

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720-901-5611

Last updated August 19, 2026

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Source: REcolorado #IR1066712

Listing Facts

  • TypeSingle-family
  • NeighborhoodFlatirons
  • Bedrooms4
  • Bathrooms5
  • Days on Prevu28
  • Taxes$27,328/year
  • Size4,348 sqft
  • Price per sqft$1,069

Amenities

  • Private Outdoor Space
  • Washer/Dryer
  • Air Conditioning
  • Parking

Location

Mortgage Calculator

Listing History

08/19/2026
Status changed to Active
$4,650,000
08/18/2026
Listed by RE/MAX of Boulder, Inc
$4,650,000
  1. 08/19/2026$4,650,000
    Status changed to Active
  2. 08/18/2026$4,650,000
    Listed by RE/MAX of Boulder, Inc

Property Details for 512 Marine Street

Exterior

Construction

  • Roof: Composition
  • Structure Type: House
  • Year Built: 1903
  • Architectural Style: Victorian
  • Construction Materials: Brick, Frame
  • Exterior Features: Balcony, Gas Grill

Features

  • Patio And Porch Features: Patio
  • Road Frontage Type: Public
  • View: Mountain(s)

Measurements

  • Building Area Total: 5,048
  • Lot Features: Level, Sprinklers In Front
  • Lot Size Acres: 0.23
  • Lot Size Square Feet: 9,947

Financial

Taxes

  • Parcel Number: R0000453
  • Tax Annual Amount: $27,328.00
  • Tax Year: 2025

Interior

Features

  • Appliances: Bar Fridge, Double Oven, Dryer, Microwave, Oven, Refrigerator, Washer
  • Fireplace Features: Family Room, Gas, Living Room, Primary Bedroom
  • Flooring: Wood
  • Interior Features: Eat-in Kitchen, Kitchen Island, Open Floorplan, Pantry, Radon Mitigation System, Walk-In Closet(s)

Measurements

  • Living Area: 4,348

Rooms

  • Basement: Full, Sump Pump
  • Has Basement: Yes
  • Bathrooms Full: 4
  • Bathrooms Half: 1
  • Bathrooms Total Integer: 5
  • Bedrooms Total: 4
  • Main Level Bathrooms: 1

Other

General

  • Exclusions: Seller property and staging (including window coverings)

Location

  • Subdivision Name: Highland Lawn

Parking

Parking

  • Attached Garage: Yes
  • Garage Spaces: 2
  • Parking Total: 2

Schools

Elementary School

  • Elementary School: Flatirons
  • Elementary School District: Boulder Valley RE 2

High School

  • High School: Boulder
  • High School District: Boulder Valley RE 2

Middle or Junior School

  • Middle Or Junior School: Manhattan

Utilities

Equipment

  • Cooling: Central Air
  • Heating: Forced Air
  • Laundry Features: In Unit
  • Sewer: Public Sewer
  • Utilities: Electricity Available, Natural Gas Available
  • Water Source: Public

Frequently Asked Questions

How many bedrooms and bathrooms does this single-family home have?

There are 4 bedrooms and 5 bathrooms in this single-family home at 512 Marine Street.

What schools are nearby to 512 Marine Street?

Nearby schools include the Flatirons Elementary School, Manhattan Middle School, and Boulder High School.

Does this single-family home have parking?

Yes, there are 2 parking spaces available for 512 Marine Street.

What are the annual taxes for 512 Marine Street?

Annual taxes for this single-family home are estimated at $27,328.

How does 512 Marine Street compare to other single-family homes in Flatirons?

This single-family home is listed 81% above the average price for single-family homes in Flatirons and has been on the market for 66 less days than the typical home in this area.

What is the square footage on this single-family home?

According to the MLS, this listing is 4,348 sqft.

512 Marine Street is a 4-bedroom, 5-bath single-family home for sale in Boulder CO 80302. Available on Prevu for 28 days at $4,650,000. This property features 4,348 square feet of living space, located in Flatirons. The median listing price for single-family homes in this area is $2,157,500. Nearby schools include Flatirons Elementary School, Manhattan Middle School, and Boulder High School. The home offers private outdoor space, air conditioning, parking, and washer/dryer. Browse more single-family home listings in Boulder.

The content relating to real estate for sale in this Web site comes in part from the Internet Data eXchange ("IDX") program of METROLIST, INC., DBA RECOLORADO® Real estate listings held by brokers other than Prevu are marked with the IDX Logo. This information is being provided for the consumers' personal, non-commercial use and may not be used for any other purpose. All information subject to change and should be independently verified.

Full MLS Disclaimers

Rebate estimate is indicative only and based on listing price and estimated buyer's agent commission paid by owner, if applicable. Final rebates are subject to Terms of Use and may vary due to final negotiated transaction terms.