Boulder County CO Homes for Sale with No HOA Fee

• 

  

  

  /37

  $735,000 Open Sat 11AM - 1PM

  • 3 Beds
  • 2 Baths
  • 2,490 Sq Ft

  613 Ranch Rd, Ward, CO 80481

  ENCHANTING MOUNTAIN PROPERTY WITH VIEWS in the coveted Bar-K Ranch, only ~25 min from Boulder! Home is open and bright with soaring ceilings, picture windows, wood floors, and a showcase wood stove. Gourmet kitchen is well laid out with a gas range and ample cabinet space - perfect for gatherings with friends and family. Walk out onto the generous south facing deck to admire the wooded

  Erika Archer Archer Mountain Properties

  613 Ranch Rd, Ward, CO 80481
• 

  

  

  /39

  $799,000

  • 4 Beds
  • 4 Baths
  • 2,834 Sq Ft

  1711 Antero Dr, Longmont, CO 80504

  Step back in time in this "Brand New" 100+ year old home! This home built in 1918, has been completely refurbished. All systems from the roof to the foundation are new! Electrical, plumbing, HVAC (including ducting), appliances and more have all been completely replaced. Enjoy a fantastic Cooks Kitchen with a large pantry, lots of storage and extensive granite counters. Numerous new windows

  Aaron Ault Pacific Auction & Realty

  1711 Antero Dr, Longmont, CO 80504
• 

  

  

  /28

  $55,000

  • 2 Beds
  • 1 Bath
  • 672 Sq Ft

  729 17th Ave Unit 16, Longmont, CO 80501

  Lovely Adult 55+ Community with low lot rent of $640/mo. Enjoy this warm and inviting home of which includes a lovely eat-in kitchen with a pantry, and the living room is large enough to provide all of the furniture that you need to give you all of the comforts of home. The yard has perennial flowers and shrubs needed without you having to design it along with a patio for barbequing. or just to

  Mary Rose Gutierrez Mary Rose Gutierrez

  729 17th Ave Unit 16, Longmont, CO 80501
• 

  

  

  /39

  $594,000

  • 3 Beds
  • 1.5 Baths
  • 1,700 Sq Ft

  12682 Anhawa Ave, Longmont, CO 80503

  100-Day Home Warranty coverage available at closing.Seller may consider buyer concessions if made in an offer. Welcome home! This home has Fresh Interior Paint. Discover a bright interior tied together with a neutral color palette.The primary bathroom features plenty of under sink storage waiting for your home organization needs.The sitting area makes it great for BBQs! Don't miss this incredible

  Tara Jones Opendoor Brokerage LLC

  

  12682 Anhawa Ave, Longmont, CO 80503
• 

  

  

  /19

  $699,000

  • Land
  • 1.40 Acres
  • $499,286 per Acre

  105 S Caribou St, Nederland, CO 80466

  Absolute UNICORN of a homesite with PRIVATE CREEK FRONTAGE on Middle Boulder Creek on the edge of Nederland, Colorado. This tranquil oasis presents an unparalleled opportunity for mountain living. A pristine waterfront property like this is a true rarity, with no other vacant lot in town offering such extensive creek frontage. Imagine wading into the creek on hot summer days from your own

  Timmy Duggan RE/MAX of Boulder, Inc

  105 S Caribou St, Nederland, CO 80466
• 

  

  /40

  $725,000

  • 3 Beds
  • 2 Baths
  • 2,138 Sq Ft

  880 Hummer Dr, Nederland, CO 80466

  Experience mountain living at its finest in this charming Nederland home, featuring 3 spacious bedrooms and 2 well-appointed bathrooms, spread across 2,138 square feet of comfortable living space. This home is perfectly situated on close to a one-acre lot, providing ample space for outdoor enjoyment and, yet, completely private.Inside, you'll find a layout designed for both relaxation and

  Caroline Higgins Compass - Boulder

  880 Hummer Dr, Nederland, CO 80466
• 

  

  /45

  $1,190,000

  • 5 Beds
  • 3 Baths
  • 2,356 Sq Ft

  902 Grove Dr, Louisville, CO 80027

  Stunning Sunlit Retreat Bordering Open Space & Trails! Welcome to your dream home-this beautifully upgraded 5-bed, 3-bath residence is a rare gem, surrounded by serene open space and trails on two sides and moments from Harper Lake. With thoughtful upgrades and a flowing, light-filled layout, this home blends luxury and comfort. Step through lush, landscaped gardens into a two-story foyer. The

  Michelle Bodin LIV Sotheby's International Realty

  

  902 Grove Dr, Louisville, CO 80027
• 

  

  /40

  $4,888,000

  • 4 Beds
  • 4.5 Baths
  • 6,362 Sq Ft

  160 Ponderosa Dr, Boulder, CO 80303

  Perched above the hillside enclave of Paragon Estates, just eight miles from downtown Boulder, 160 Ponderosa Drive offers nearly eight acres of serene Colorado landscape with sweeping views of the Flatiron mountains, snowcapped peaks, Continental Divide, and Baseline Reservoir. This custom-built contemporary home, designed by Craig Bush, and built for $3.2 million in 1995, combines refined luxury

  Ryan McIntosh LIV Sotheby's Intl Realty

  160 Ponderosa Dr, Boulder, CO 80303
• 

  

  /14

  $1,450,000

  • Land
  • 0.50 Acre
  • $2,900,000 per Acre

  1965 Kohler Dr, Boulder, CO 80305

  An exceptional opportunity awaits to craft a Colorado dream home in one of South Boulder's most coveted enclaves. Perched on over half an acre in West Highland Park, this gently sloping, 21,909-square-foot lot offers breathtaking views and an unrivaled connection to nature. Upper portion of property protected with a conservation easement, preserving privacy, panoramic vistas and a serene wildlife

  Lynn Rauh-Ryan milehimodern - Boulder

  1965 Kohler Dr, Boulder, CO 80305
• 

  

  /33

  $1,475,000

  • 3 Beds
  • 3.5 Baths
  • 3,712 Sq Ft

  84 Canon View Rd, Boulder, CO 80302

  COMPLIMENTARY 1 year rate buy-down with preferred lender! Nestled in the breathtaking Boulder Heights community, this exceptional home offers panoramic views that stretch from the city of Boulder to the plains, and even the distant skyline of Denver. The home is thoughtfully designed to capture the gorgeous views with expansive windows throughout - perfect for watching the sunrise in the morning

  Beth Goltz WK Real Estate

  84 Canon View Rd, Boulder, CO 80302
• 

  

  /27

  $250,000

  • Land
  • 8 Acres
  • $32,982 per Acre

  4400 4th of July Rd, Nederland, CO 80466

  Welcome to a truly exceptional opportunity at 10,000 ft elevation in the heart of Colorado’s breathtaking mountains. This rare 7.58-acre parcel offers unmatched access to hundreds of miles of trails, stunning mountain peak views, and significant stream frontage along North Fork Middle Boulder Creek. Located just 1,400 feet from the Fourth of July Trailhead and campground, this property spans both

  Chrissy Fairbanks Compass - Denver

  

  4400 4th of July Rd, Nederland, CO 80466
• 

  

  /34

  $415,000

  • Land
  • 9 Acres
  • $47,921 per Acre

  609 Old Townsite Rd, Boulder, CO 80302

  Expansive land, stunning views, and true privacy. 609 Old Townsite Rd is a rare Sugarloaf find, bordered by National Forest and tucked just far enough from Boulder to feel like your own world. Towering pines and the steady hush of North Boulder Creek create a peaceful backdrop for whatever dream you bring here. From your perch above Dream Canyon, take in Bear Peak, the Oceanic Wall, and the

  Jackie Jones RE/MAX Alliance - Nederland

  

  609 Old Townsite Rd, Boulder, CO 80302
• 

  

  /23

  $699,000

  • 3 Beds
  • 1 Bath
  • 1,080 Sq Ft

  529 Main St, Louisville, CO 80027

  Charming 3-Bedroom Home in the Heart of Louisville! Welcome to this beautifully maintained 3-bedroom, 1-bath home nestled just one block from vibrant Downtown Louisville! Built in 1908, this home exudes historic charm while offering modern comfort and thoughtful care throughout. Flooded with natural light from ample windows, the interior is warm, inviting, and full of character. Enjoy a spacious

  Amanda Miller RE/MAX Elevate - Erie

  529 Main St, Louisville, CO 80027
• 

  

  /34

  $616,000

  • 3 Beds
  • 2 Baths
  • 1,938 Sq Ft

  305 Cottonwood Ct, Longmont, CO 80501

  Welcome to this wonderful brick ranch-style home located on a quiet street in the heart of Longmont. This home boasts 3 bedrooms, 2 bathrooms, an office, 2 living spaces and a gas fireplace. Kitchen features stainless appliances with plenty of cabinets. Breathe deeply with all this space and ignite your imagination with one of the largest lots around. This fully fenced private yard has a large

  Ross Vigliotti HQ Homes

  

  305 Cottonwood Ct, Longmont, CO 80501
• 

  

  /23

  $399,000

  • 2 Beds
  • 1 Bath
  • 1,281 Sq Ft

  12991 Peak To Peak Hwy, Allenspark, CO 80455

  PRICE REDUCTION - SELLER IS MOTIVATED! Step into this seasonal cabin, and let yourself travel back to a simpler time where family and friends sat hearth side, visiting, telling stories, playing games and enjoying time together. This is was the first cabin that was built in the Tahosa Valley. The location of this cabin is on a parcel of land that sits above the North Saint Vrain. You'll enjoy the

  Tammy Ackerman Rocky Mountain Property Inc.

  12991 Peak To Peak Hwy, Allenspark, CO 80455
• 

  

  /20

  $450,000

  • Land
  • 0.15 Acre
  • $3,000,000 per Acre

  1006 Honeysuckle Ln, Louisville, CO 80027

  Incredible opportunity to build your dream home in Louisville's Harper Lake neighborhood, 1/10th of a mile from Harper Lake Open Space trail. Imagine crafting your custom build surrounded by scenic Davidson Mesa views, with direct access to Harper Lake's open-space trails and a nearby dog park. Nestled on a quiet cul-de-sac in the Harper Lake neighborhood, this lot presents a once-in-a-lifetime

  Marie Jacobs LIV Sotheby's Intl Realty

  1006 Honeysuckle Ln, Louisville, CO 80027
• 

  

  /17

  $1,300,000

  • Land
  • 2.00 Acres
  • $650,000 per Acre

  321 Majestic View Dr, Boulder, CO 80303

  Bank Appraised on 11/08/22 at 1.7 Million. Introducing 321 Majestic View Drive - a truly exceptional opportunity to build your dream estate on a breathtaking 2-acre parcel surrounded by protected private property. Perfectly positioned to capture unobstructed views of the iconic Flatirons and Spanish Hills, this rare homesite comes with FULLY APPROVED plans for a luxurious 5,999-square-foot

  Eric Jacobson Compass - Boulder

  321 Majestic View Dr, Boulder, CO 80303
• 

  

  /33

  $2,999,000

  • 4 Beds
  • 6 Baths
  • 5,964 Sq Ft

  4932 Valkyrie Dr, Boulder, CO 80301

  Set on 2.14 acres in Boulder's coveted Valhalla neighborhood, this superbly remodeled home offers high-end finishes & thoughtful upgrades-all set against a stunning mountain backdrop & surrounded by hundreds of acres of open space & trails. Uniquely zoned rural agricultural, this neighborhood will always maintain its open space, ensuring a serene & private setting for generations to come. The

  Zachary Zeldner Compass - Boulder

  4932 Valkyrie Dr, Boulder, CO 80301
• 

  

  /39

  $4,950,000

  • 4 Beds
  • 3.5 Baths
  • 5,026 Sq Ft

  3746 Wonderland Hill Ave, Boulder, CO 80304

  Poised in Boulder's prestigious Linden Park, this extraordinary home offers an unparalleled blend of distinct design, elegance, comfort, privacy, and breathtaking natural surroundings. Direct access to the serene and private Maxwell Lake and green space from the back, and an abundance of hiking and biking trails including Goat Trail and Sanitas from the front. Mid-century elegance meets nature in

  Tim Goodacre milehimodern - Boulder

  3746 Wonderland Hill Ave, Boulder, CO 80304
• 

  

  /38

  $999,900

  • 4 Beds
  • 3 Baths
  • 2,304 Sq Ft

  6465 Red Hill Rd, Boulder, CO 80302

  Gorgeous remodel in 2024 with stunning 180 degree mountain views only 4 minutes to Broadway and 10 minutes to downtown Boulder! Seller financing available if needed. Mid century style with clean lines, large windows and two fireplaces meets the tranquil Boulder foothills in this contemporary home with incredible designer updates. Inside find a new full kitchen and baths remodel. Stylish &

  Marilyn Ackerman HomeSmart Realty

  6465 Red Hill Rd, Boulder, CO 80302
• 

  

  /45

  $2,999,000

  • 3 Beds
  • 3.5 Baths
  • 5,253 Sq Ft

  6231 Prospect Rd, Longmont, CO 80503

  FIRST time on the market! This one-of-a-kind 38-acre horse and wildlife property offers a rare opportunity just 15 minutes from Boulder and Longmont. Surrounded by open space and directly across from the 1,000-acre Langerman Preserve, it’s a true refuge with direct access to miles of trails for hiking, riding, and exploring.The property needs work but has strong bones and great potential to

  Lee Merreot Lee Merreot

  

  6231 Prospect Rd, Longmont, CO 80503
• 

  

  /37

  $740,000

  • 3 Beds
  • 2 Baths
  • 1,636 Sq Ft

  38 Navajo Trail, Nederland, CO 80466

  Mountain home at edge of Nederland. Privacy, great access, large south facing lot in a quiet, friendly neighborhood. Open floor plan w/vaulted ceilings. Delightful views in every direction; clean air & brilliant night sky. Walking, biking, and skiing trails nearby. 3/4 mile trail from back door to an exquisite small lake, and beyond to magnificent Caribou Open Space. Nederland offers dining,

  Lexi Armitage Home on the Range

  38 Navajo Trail, Nederland, CO 80466
• 

  

  /8

  $1,335,000

  • 4 Beds
  • 3.5 Baths
  • 2,739 Sq Ft

  935 Eldorado Ln Unit A, Louisville, CO 80027

  Incredible Opportunity to Build Your Dream Home in Louisville! Located on a quiet cul-de-sac with no HOA, this to-be-built 4-bedroom, 4-bathroom home will offer 3,907 square feet of beautifully designed living space. Sheffield Homes is the preferred builder, and the buyer will have the rare opportunity to select the architectural design and all interior and exterior finishes-truly customizing

  The Bernardi Group Coldwell Banker Realty-Boulder

  935 Eldorado Ln Unit A, Louisville, CO 80027
• 

  

  /32

  $1,495,000

  • Land
  • 70 Acres
  • $21,336 per Acre

  2050 Fourmile Canyon Dr, Boulder, CO 80302

  Discover an extraordinary chance to own two adjacent 35-acre building sites, less than 10 minutes from downtown Boulder-an unparalleled offering in the Boulder foothills. Whether you're dreaming of building a private mountain retreat or a legacy estate, these expansive, rare mega-sized lots offer endless potential-including the ability to develop two separate residences. Nestled just up scenic

  Jane O'Herron Compass - Boulder

  2050 Fourmile Canyon Dr, Boulder, CO 80302
• 

  

  /17

  $217,000

  • Land
  • 0.32 Acre
  • $678,125 per Acre

  0 E 5th St Unit 1034288, Nederland, CO 80466

  Imagine standing on a sun-soaked, south-facing hillside with the scent of pine in the air and the quiet rustle of the breeze around you. In front of you, the land opens up to a sweeping view of Barker Reservoir, shimmering in the light, and the valley stretching peacefully below. It feels like the kind of place where mornings begin slowly with coffee and a sunrise and evenings wind down with

  Josh Harrod 8z Real Estate

  0 E 5th St Unit 1034288, Nederland, CO 80466
• 

  

  /40

  $722,000

  • 3 Beds
  • 2 Baths
  • 2,147 Sq Ft

  10007 E County Line Rd, Longmont, CO 80501

  Potential! Potential! bring your offer!!! Almost an acre lot! Property zoned MU-E (Mixed Use.) Great and well cared for home with flexible space. Owner could run a home business with employees. Several options!!! Property is Annexed to the city with all the city services. This is a unique property w/beautiful 2147 finished square feet! Ranch Style home in great condition! Features: Wood floors,

  Rodney Carlson Equity Colorado-Front Range

  10007 E County Line Rd, Longmont, CO 80501
• 

  

  /33

  $750,000

  • 3 Beds
  • 2 Baths
  • 1,590 Sq Ft

  291 W Sycamore Ln, Louisville, CO 80027

  This newly renovated ranch is located in the highly sought after Sundance neighborhood. Behind your fenced backyard is Sundance Park and immediately adjacent to Sycamore Lane is Daugenbaugh Open Space and Waremberg Fishing Pond. This home is well located and within walking district of the highly-rated Boulder Valley School District's Louisville Elementary School and Louisville Middle School.

  Timothy Spong Coldwell Banker Realty 14

  

  291 W Sycamore Ln, Louisville, CO 80027
• 

  

  /30

  $575,000

  • 2 Beds
  • 1 Bath
  • 1,371 Sq Ft

  24427 Peak To Peak Hwy, Nederland, CO 80466

  This charming multigenerational family home located in beautiful Nederland was built in 1947 and offers a cozy retreat in a picturesque mountain setting. There are 2 cabins on the property. The second cabin can be used as a mother in law unit, studio or office. The property exudes rustic charm with its original construction and is perfect for those seeking a peaceful and serene mountain escape.

  Albert Gollas Gollas and Company Inc

  

  24427 Peak To Peak Hwy, Nederland, CO 80466
• 

  

  /35

  $225,000

  • Land
  • 0.43 Acre
  • $523,256 per Acre

  87 Sundance Cir, Nederland, CO 80466

  NEW PRICE! The time is perfect to Build Your Green Dream Home in the Heart of Sunnyside - Plans Included! Discover the perfect blend of privacy, nature, and convenience on this nearly 1/2-acre lot in Nederland's sought-after Sunnyside neighborhood. Nestled among mature trees and bordering a serene 1-acre natural town park, this lush and build-ready property offers a rare opportunity to create

  Terry Larson RE/MAX of Boulder, Inc

  87 Sundance Cir, Nederland, CO 80466
• 

  

  /40

  $2,790,000

  • 4 Beds
  • 5 Baths
  • 2,793 Sq Ft

  721 9th St, Boulder, CO 80302

  Nestled on a rare quadruple lot just steps from Chautauqua Park, this 1911 Craftsman-style home offers breathtaking views and thoughtful modern updates. Refined interiors and exquisite attention to detail combined with expansive outdoor spaces, breathtaking views of the Flatirons and Mt Sanitas, and proximity to iconic outdoor recreation and cultural opportunities make this home an exceptional

  John McElveen milehimodern - Boulder

  721 9th St, Boulder, CO 80302
• 

  

  /9

  $5,200,000

  • 12 Beds
  • 12 Baths
  • 7,292 Sq Ft

  3460 Madison Ave, Boulder, CO 80303

  Please contact agent for information

  Brian Mannlein Cushman Wakefield

  3460 Madison Ave, Boulder, CO 80303
• 

  

  /40

  $2,995,000

  • 4 Beds
  • 3.5 Baths
  • 5,215 Sq Ft

  724 Johnson St, Louisville, CO 80027

  Discover a rare gem on one of Louisville's most sought-after streets, just steps from Community Park and Old Town. This 2019 custom-built home offers a perfect blend of elegance and modern luxury.From the grand 6-foot wide staircase to the designer finishes throughout, every detail has been crafted with precision and quality. The chef-inspired kitchen is a standout with its Blue Star range,

  Marie Jacobs LIV Sotheby's Intl Realty

  724 Johnson St, Louisville, CO 80027
• 

  

  /34

  $575,000

  • 3 Beds
  • 2.5 Baths
  • 2,697 Sq Ft

  2410 Key Ct, Longmont, CO 80501

  Your search has ended! Discover this lovingly maintained, single -owner gem situated on a quite cul-de-sac! This 2-story home offers 3 spacious bedrooms, including a spacious primary with a 3/4 bath and walk in closet. The main floor provides living and dining open floor plan, gas fireplace and a functional kitchen with pantry. Main level laundry can serve as a mud room with the outside assess.

  Kathy Crowder RE/MAX Alliance-Longmont

  2410 Key Ct, Longmont, CO 80501
• 

  

  /50

  $765,000

  • 2 Beds
  • 2 Baths
  • 2,126 Sq Ft

  548 Coughlin Meadows Rd, Boulder, CO 80302

  Nature Meets Modern DesignModern, efficient mountain living on 2 private acres. Radiant floors, cork flooring, vaulted ceilings, new electric, solar, and Scandinavian-style kitchen with artisan finishes. Wildlife-rich land with elk, moose, and more. Bonus: a separate 1BR/1BA cabin for guests, studio, or office. 10 mins to Nederland’s shops, music, and services; 15 to Eldora skiing; 25-min

  Nicholas Brodsky Boulder-Mountain Realty

  

  548 Coughlin Meadows Rd, Boulder, CO 80302
• 

  

  /32

  $2,890,000

  • 4 Beds
  • 3.5 Baths
  • 5,371 Sq Ft

  910 Kalmia Ave, Boulder, CO 80304

  Nestled in coveted north west Boulder on beautiful Kalmia Ave, this home offers a rare combination of privacy and space in this extremely desirable location. The contemporary open floor plan with large rooms is accentuated by expansive windows that fill the interior with beautiful natural light, while the wide open living room faces a large patio and cozy fireplace--perfect for relaxing or

  Summer Youngs Property Colorado Inc

  910 Kalmia Ave, Boulder, CO 80304
• 

  

  /5

  $599,000

  • Land
  • 4.05 Acres
  • $147,901 per Acre

  1573 Linden Dr, Boulder, CO 80304

  Come build your Dream home! All the legwork is done, and you can start construction quickly, and with our preferred builder! Reach out for construction bid, making getting a construction loan easy! Nestled in the peaceful foothills of Pine Brook Hills, 1573 Linden Drive is a build-ready homesite with exceptional value and momentum. Boulder County has already approved the site plan, the

  Benjamin Rhodin Stealth Wealth Group

  

  1573 Linden Dr, Boulder, CO 80304
• 

  

  /38

  $290,000

  • Land
  • 10 Acres
  • $28,913 per Acre

  101 Lewis Ln, Longmont, CO 80503

  Build your dream home on this stunning 10+ acre parcel in beautiful Lyons, Colorado! This peaceful and private property offers sweeping foothills views, vibrant sunsets and sunrises, and the perfect balance of seclusion and accessibility-just minutes from downtown Lyons and a short 30-minute drive to Boulder. Much of the groundwork has been completed for a smooth build: electricity is available

  Matt Ferren LoKation-Tucker Group Real Estate

  101 Lewis Ln, Longmont, CO 80503
• 

  

  /4

  $199,000

  • Land
  • 13 Acres
  • $15,669 per Acre

  1702 Linden Dr, Boulder, CO 80304

  Come build your Dream home! All the legwork is done, and you can start construction quickly, and with our preferred builder!Positioned in one of Boulder's most desirable mountain communities, this almost 13-acre parcel at 1702 Linden Drive offers a rare opportunity to bring a stunning, modern mountain home to life. With nearly two years of architectural and site plan review already behind

  Benjamin Rhodin Stealth Wealth Group

  

  1702 Linden Dr, Boulder, CO 80304
• 

  

  /40

  $3,500,000

  • 4 Beds
  • 4.5 Baths
  • 5,050 Sq Ft

  2485 Lee Hill Dr, Boulder, CO 80302

  Welcome to a truly extraordinary mountain estate where self-sufficiency meets mountain elegance-an exceptional retreat that blends off-grid capability w/refined indoor-outdoor living. Perched at 6,750 feet on 14 fire-mitigated manicured acres, a 5,050 sq ft south-facing residence drenched in Colorado sunshine w/sweeping panoramic views of the Denver skyline, peaks of Colorado Springs, & a scenic

  Thomas Kahn RE/MAX Alliance-Boulder

  2485 Lee Hill Dr, Boulder, CO 80302
• 

  

  /25

  $620,000

  • 4 Beds
  • 2.5 Baths
  • 2,757 Sq Ft

  1506 Fisk Ct, Longmont, CO 80503

  Big price improvement! Recent appraisal came in at 650k. Lovely, spacious, stylish and desirable, 4-bedroom, 3-bath home located in a highly sought-after West Longmont neighborhood. This beautifully maintained residence offers both comfort and style, with thoughtful updates throughout. Step into the remodeled eat-in kitchen featuring freshly painted gleaming white cabinetry, granite countertops,

  Kathleen Nolan MB/Nolan Real Estate LLC

  1506 Fisk Ct, Longmont, CO 80503

Showing Results 561 - 600, Page 15 of 18