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$949,000
IR1068253 MLS
An exceptional building opportunity in the heart of Boulder, 3055 23rd Street offers a nearly 1/3 acre flat lot primed for new construction. Situated on a desirable, established street, this remarkable property provides a sprawling canvas with water and sewer connections already in place. The expansive, level lot opens the door to a wide range of possibilities for creating a truly special home. The generous size of the property is particularly well suited for a spacious single-level design, making it an excellent option for those seeking the convenience of main-level living. If you've been searching for the ideal setting to build a home with room to spread out both indoors and out, this lot offers outstanding flexibility. Bring your architect and your vision, or explore the potential of the site through the sample renderings by Fanas Architecture included in the photos. These concepts highlight just two possibilities, an expansive one-level retreat with an oversized garage, or a multi-story home featuring two primary suites, a rooftop deck, and nearly 3,500 square feet of living space. Beyond the property itself, enjoy the very best of the Boulder lifestyle. World-class hiking and biking trails are moments away, with Ideal Market Shopping Center just a short walk and the dining, culture, and energy of Pearl Street only a five-minute drive. Don't miss your chance to build your dream life in Central Boulder!

3055 23rd Street, Boulder

Courtesy of Compass - Boulder . 7204700910

$1,450,000
IR1066764 MLS
1559 Orchard Avenue presents a compelling opportunity to build in the heart of North Boulder on an approximately half-acre, flat, shovel-ready lot. The generous site offers room to think expansively about architecture, outdoor living, landscaping, and the relationship between home and land, a level of flexibility that can be difficult to find elsewhere in Boulder. Whether approached by a developer, architect, or future homeowner, the fundamentals are already in place: a highly usable parcel, substantial space, and an established North Boulder setting. Orchard Avenue has a quiet, tree-lined character, with mature landscaping and larger residential lots creating a sense of space while keeping everyday conveniences close. Lucky's Market, Bakehouse and Cafe are nearby, Broadway provides easy access throughout Boulder, and Wonderland Lake, surrounding trails, and open space offer abundant opportunities to get outside. It is a location that combines the breathing room of an established residential neighborhood with the connectivity that makes North Boulder so desirable. What distinguishes 1559 Orchard Avenue is the combination of land, usability, and location. The flat half-acre provides a substantial canvas for a custom residence, with space to create meaningful outdoor areas alongside the home rather than designing around the constraints of a tighter urban parcel. Bring a personal vision to life, collaborate with an architect, or develop a distinctive North Boulder residence on a site that offers both scale and flexibility. In a city where this amount of usable land is increasingly limited, 1559 Orchard Avenue offers the opportunity to build with room to spare, without giving up access to the neighborhood amenities and outdoor spaces that support the way you want to live.

1559 Orchard Avenue, Boulder

Courtesy of Compass - Boulder . 9142637678

$1,300,000
IR1062990 MLS
Rare 2-Lot Development Opportunity! Builders, developers, investors and custom home buyers-this is an exceptional opportunity to acquire both 1920 & 1930 Grape Ave for $1,300,000, or purchase 1930 Grape Ave individually for $750,000. Rarely do two adjacent, separately buildable lots become available in an established Boulder neighborhood. Purchase both parcels to create an outstanding opportunity to design & construct 2 homes simultaneously-reducing costs & maximizing economies of scale in one of Boulder's most desirable infill locations. For custom home buyers, 1930 Grape Ave offers the ideal setting to build the home you've always envisioned. Or secure both lots to create a larger private estate, preserve additional privacy and outdoor space, or build one home while retaining or selling the second lot.Vacant residential lots in established Boulder neighborhoods are exceptionally scarce, and opportunities to acquire two side-by-side parcels are even rarer. Whether you're planning one extraordinary custom residence or a two-home development, this unique offering provides unmatched flexibility, long-term value, and exceptional investment potential. Renderings reflect artist's concept only. See Documents for Feasibility Study.

1930 Grape Avenue, Boulder

Courtesy of milehimodern - Boulder . 7204225131

$725,000
IR1062989 MLS
Rare Dual-Lot Development Opportunity for builders, developers, investors & custom home buyers. This is an exceptional chance to secure one or both of two adjacent, separately buildable lots in an established Boulder neighborhood. Purchase 1920 Grape Ave individually for $725,000, or acquire both 1920 & 1930 Grape Ave for $1,300,000 and capitalize on the efficiencies of designing and constructing two homes simultaneously. Construct both homes to significantly reduce cost & maximize economies of scale-creating a compelling infill opportunity that's increasingly difficult to find in Boulder. For custom home buyers, this lot offers the perfect canvas to build the home you've always envisioned. Or purchase both lots to create a larger private estate & preserve additional open space and privacy, or develop one home while retaining or selling the other. Vacant residential lots in established Boulder neighborhoods are exceptionally scarce, and opportunities to acquire two side-by-side parcels are even rarer. Whether you're looking to build one extraordinary custom home or develop two signature residences, this offering provides outstanding flexibility, value, and long-term potential. Renderings reflect artist's concept only. See Documents for Feasibility Study.

1920 Grape Avenue, Boulder

Courtesy of milehimodern - Boulder . 7204225131

$5,000,000
IR1054469 MLS
Presenting 1120-1130 Alpine Avenue, an exceptional 0.93-acre (40,349 sq. ft.) redevelopment parcel situated in the heart of Boulder's highly coveted North Broadway neighborhood. Currently improved with two medical office buildings totaling 13,657 SF, the site offers a generational canvas for a landmark mixed-use project in a notoriously high barrier-to-entry submarket. The property is primed for a visionary, 8-level conceptual development. This concept ideal for flexible, live/work loft environments designed to seamlessly integrate with Boulder's dynamic lifestyle. Innovative Residential Design: 56,000 SF of flexible, subdividable living space across four levels. Efficient "paired floor" configuration allowing upper spaces to be accessed from within lower units, permitting for endless combinations, from expansive two-story lofts to single-story studios. Premium Ground-Floor Retail: 16,000 SF of high-bay (12') retail space anchored by an intimate courtyard pocket park. Spaces can be leased separately or combined with residential units for the ultimate live/work amenity. World-Class Rooftop Amenities: 15,000 SF private recreation deck with rooftop pool and lush gardens. Intelligent Parking Solutions: Two levels of underground parking with 140 exceptionally wide (10') spaces for easy access and loading. Strategic Positioning: Located just west of Broadway, the site sits immediately south of the brand-new City of Boulder Municipal Campus, guaranteeing dense, reliable daily foot traffic. Ultimate Walkability: Directly across from the North Boulder Ideal Market Shopping Center, providing residents and tenants with effortless access to Whole Foods, Sweet Cow, Santos, and other essential daily staples.

1120 Alpine Avenue, Boulder

Courtesy of Gibbons-White, Inc. . 3034421040

$1,350,000
3790673 MLS
Rare opportunity to purchase one of the largest remaining properties in desirable North Boulder. Set back from the street for a super quiet/private experience, this 33,212 sq ft lot has tremendous potential to build your dream home close to Central and North Boulder. Your imagination is the only limitation. Plenty of room to add an ADU in addition to a new house for additional income or mother in law situation. Numerous options! Panoramic never to be blocked southern exposure with unobstructed views of the Foothills and Flatirons beyond. The ball fields to the southeast of property are NOT being developed and will remain the same. The City of Boulder building will remain the same to be changed only on the interior into a retirement home. There is an existing ~1,500 sq ft single level non updated home onsite.The home and land are being sold as-is -- as an estate sale, and has no legal encumbrances for sale. Aerial drone photos nicely display all that this rare property has to offer. THIS PROPERTY IS PRICED TO SELL!

1400 Kalmia Avenue, Boulder

Courtesy of Level One Realty Group . teamlevelone@gmail.com,720-240-1955

$795,000
IR1059165 MLS
Located in one of North Boulder's most desirable neighborhoods, 1952 Vine Avenue offers a rare opportunity to build a custom residential property in a setting that fully captures the Boulder lifestyle. Under the city's 2025 transit corridor zoning reforms, this parcel qualifies for a duplex or two single-family residences on the same lot - no subdivision required. This spacious, flat, level lot has existing city water and sewer connections already in place. Positioned toward the quieter southwest end of Vine Avenue, the property offers a peaceful residential setting with Flatiron views and immediate access to many of North Boulder's most sought-after amenities. Just steps from Wonderland Lake, enjoy scenic walking and biking paths, nearby trail systems, and easy access to open space right from your doorstep. The location also places you moments from neighborhood favorites including Lucky's Market, Lucky's Bakehouse & Creamery, local cafes, and popular dining destinations. The property is located near Foothills Community Park, Boulder's extensive network of hiking and biking trails, top-rated schools, and convenient public transportation. Downtown Boulder and Pearl Street are just minutes away, offering quick access to shopping, restaurants, and cultural attractions while still maintaining the quieter character that defines North Boulder living. With its combination of location, infrastructure, development flexibility, and access to both outdoor recreation and everyday conveniences, 1952 Vine Avenue represents an increasingly rare opportunity to create a custom residential project in one of Boulder's most established and desirable neighborhoods.

1952 Vine Avenue, Boulder

Courtesy of Compass - Boulder . 3032426012

$1,125,000
IR1056549 MLS
An extraordinary opportunity awaits in Pine Brook Hills, where this 1.65-acre mountain property delivers sweeping 180-degree views of the Front Range and Eastern Plains. This premium lot comes complete with architectural plans and active city permitting for an energy-efficient, 5,040-square-foot residence featuring three bedrooms and four baths. With renderings in hand, soil testing complete and a recently updated survey, the groundwork has been prepared for a seamless build process. Set within a peaceful setting, this property offers both seclusion and accessibility, just moments from North Broadway amenities and Pearl Street. Nearby access to trails, parks and open space enhances the outdoor lifestyle, while year-round county-maintained roads and available utilities - including natural gas, electricity, internet, paid water tap fees and a new septic system - ensure convenience. With no HOA and fire protection provided locally, this rare Boulder foothills lot is poised for exceptional living.

61 Wild Horse Circle, Boulder

Courtesy of milehimodern - Boulder . 3038187500

$1,995,000
IR1049559 MLS
Positioned along the coveted west side of 3rd Street in Boulder's prestigious Newlands neighborhood, this rare 12,030-square-foot parcel offers an exceptional opportunity. Whether you're a builder, developer, architect, or a future homeowner envisioning your dream residence, this flat, permit-ready site provides the perfect site for a high-end custom home in one of Boulder's most desirable settings. Backing to protected land with sweeping Flatirons views, the property's generous dimensions and premier location allow for a range of design possibilities, including expansive layouts and integrated indoor-outdoor living. From this exceptional site, enjoy immediate access to Boulder's most iconic trail systems, including the Goat Trail, Mt. Sanitas, Dakota Ridge, and Sunshine Canyon. Just minutes away, North Boulder Park and the North Boulder Rec Center offer expansive green space and year-round recreation. Everyday essentials and local favorites, including Ideal Market, award-winning restaurants, charming coffee shops, and boutique retailers, are all close by. Top-rated schools and the vibrant energy of nearby Pearl Street complete the unmatched lifestyle this location affords. 3033 3rd Street is a rare chance to create something extraordinary in one of Boulder's most exclusive and enduring neighborhoods.

3033 3rd Street, Boulder

Courtesy of Compass - Boulder . 7204807650

$3,900,000
IR1008121 MLS
Tremendous opportunity to purchase one of the largest properties left to develop in the heart of coveted North Boulder! With a lot size of 40,897 square feet and RL-1 zoning, multiple building options could include a 4 and potentially 5 lot subdivision OR build a true dream estate among some of the finest residences in town. This premium lot features endless southern exposure with unobstructed views across the riparian corridor to the Foothills and Flatirons beyond. Walkability to Wonderland Lake and Lucky's shopping market are an added bonus to this incredible setting. The property has been annexed but not yet subdivided. An Environmental Site Assessment has already been conducted along with a feasibility study by renowned Coburn Architecture - all of the heavy lifting has been done while maintaining the ultimate flexibility...build a family compound, a custom dream home or a multi-residence enclave...you decide! Buyer to verify all current and future entitlements.

1560 Sumac Avenue, Boulder

Courtesy of Compass - Boulder . 7203395033


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