New Construction Homes for Sale in Pima County, AZ

• 

  

  

  /11

  $229,000 Lot/Land

  9931 E Mount Pleasant Dr Unit 13, Tucson, AZ 85749

  • 3.56 Acres
  • $64,326 per Acre

  Don't miss this rare opportunity to own 3.56 pristine acres in the highly sought-after Tanque Verde Valley, located just off Catalina Highway-the scenic gateway to My. Lemmon. This lot offers breathtaking 180 degree views of the Catalina Mountains to the north, with multiple building sites to maximize your vision. All utilities are already at the lot line, making this a ready to build home site.

  Rick Sack Long Realty

  9931 E Mount Pleasant Dr Unit 13, Tucson, AZ 85749
• 

  

  

  /13

  $165,000 Lot/Land

  3178 W Starr Galaxy Dr Unit 58, Tucson, AZ 85745

  • 20,908 Sq Ft
  • $343,750 per Acre

  Discover the epitome of luxury living at Wildcat Pass, the crown jewel nestled within the prestigious Star Pass community. Here, elegance and nature intertwine, offering an unparalleled lifestyle opportunity. Set amid the meticulously designed fairways of Arnold Palmer's three nine-hole golf courses, Wildcat Pass presents the ideal canvas to build your bespoke dream home--a sanctuary that

  Kaukaha Watanabe Real Broker

  3178 W Starr Galaxy Dr Unit 58, Tucson, AZ 85745
• 

  

  

  /17

  $175,000 Lot/Land

  12457 N Piping Rock Rd Unit 48, Oro Valley, AZ 85755

  • 20,037 Sq Ft
  • $380,435 per Acre

  Discover a rare opportunity to build a custom home in the prestigious Sunridge II community in Oro Valley. Situated at a privileged and elevated position, this lot provides long range views to the Catalina Mountains to the East and Unobstructed sunset views of the Tortolita mountains to the West. Builder approved renderings of a single-story 2,563 sqft. property is included to understand the size

  Frank Lococo Russ Lyon Sotheby's International Realty

  12457 N Piping Rock Rd Unit 48, Oro Valley, AZ 85755
• 

  

  

  /14

  $149,000 Lot/Land

  1972 N Corte El Rancho Merlita Unit 15, Tucson, AZ 85715

  • 16,117 Sq Ft
  • $402,703 per Acre

  Tucked away in the lush mesquite groves of the Tanque Verde Valley, once the historic desert escape of Merle Norman, pioneering cosmetics entrepreneur, you will find El Rancho Merlita. Within this gated community. Select your architect and builder for your dream home for this Tranquil desert oasis with mountain views, yet minutes from the northeast side shopping, entertainment, and restaurants. A

  Tim Hagyard Long Realty

  1972 N Corte El Rancho Merlita Unit 15, Tucson, AZ 85715
• 

  

  

  /4

  $429,000 Lot/Land

  3546 W Tarvers Place Unit 44, Marana, AZ 85658

  • 4.25 Acres
  • $100,941 per Acre

  This lot captures all the beauty of luxurious Saguaro Ranch. Expansive panoramic views, granite outcroppings, and as majestic as a National Park, the designated homesite is on a 4.249 acre lot with views in every direction. If you love the iconic Sonoran Desert, you must see this property with Pusch Ridge alpenglow, wide open vistas, and hundreds of Saguaros. Membership in the Saguaro Ranch

  Michael Conlin Long Realty

  3546 W Tarvers Place Unit 44, Marana, AZ 85658
• 

  

  /15

  $249,900 Lot/Land

  892 W Cushing St Unit 83, Tucson, AZ 85745

  • 3,920 Sq Ft
  • $2,776,667 per Acre

  Large Mercado District Lot! Fantastic opportunity to own a coveted vacant lot with plenty of potential! Sewer Hookup Installed Already! Build the custom masonry home you've always envisioned with the builder of your choice. With endless possibilities, this property is ready to bring your vision to life - whether you're planning a distinctive residence, a live-work concept, or an inspired

  Erica Hoffman eXp Realty

  892 W Cushing St Unit 83, Tucson, AZ 85745
• 

  

  /18

  $210,000 Lot/Land

  4075 Saguaro Monument Place Unit 16, Tucson, AZ 85730

  • 3.3 Acres
  • $63,636 per Acre

  Nestled within the prestigious gated community of Saguaro Monument Estates, this 3.3-acre lot offers the perfect blend of privacy, natural beauty, and convenience. Set against the breathtaking backdrop of Saguaro National Monument Park East, the property captures panoramic mountain views in every direction. A large, flat building envelope provides the ideal site for your custom dream home, with

  Paula Williams Long Realty

  4075 Saguaro Monument Place Unit 16, Tucson, AZ 85730
• 

  

  /15

  $28,999 Lot/Land

  0 W Maser Way 5 Acres -- Unit 6993177, Marana, AZ 85653

  • 5 Acres
  • $5,800 per Acre

  This 5 acre parcel in Marana is fully fenced, flat and level and borders BLM Land. Perfect spot for your ranch or to place a manufactured home and build your new homestead. This property offers wide open space, and stunning Arizona desert views, while still being only a short drive to Tucson Seller will carry with 50 percent down payment..

  Kendall Weesner Long Realty Covey Luxury Properties

  0 W Maser Way 5 Acres -- Unit 6993177, Marana, AZ 85653
• 

  

  /16

  $31,000 Lot/Land

  0 W Saddle Trail Unit 22609559, Avra Valley, AZ 85653

  • 7.24 Acres
  • $4,282 per Acre

  Spanning 7.24 acres in Marana, Pima County, this rural homestead parcel offers a prime setting, located west of Tucson near Saguaro National Park West and the Arizona-Sonora Desert Museum! The property features expansive natural surroundings and convenient proximity to Interstate 10 and Tucson's amenities. Plus, the setting provides a balance of privacy and accessibility within a growing regional

  Jared English Congress Realty

  0 W Saddle Trail Unit 22609559, Avra Valley, AZ 85653
• 

  

  /9

  $69,900 Lot/Land

  1760 W Riverview Blvd Unit 2, Tucson, AZ 85745

  • 21,780 Sq Ft
  • $139,800 per Acre

  Exceptional Development Opportunity in Tucson City Limits! Discover this rare opportunity to own a R2 zoned lot ideally located within Tucson city limits. This property offers flexibility for residential or multifamily development—perfect for builders, investors, or anyone looking to expand their real estate portfolio. Situated in a highly convenient location near I-10, with close proximity to

  Michael Martinez Realty Executives Arizona Territory

  1760 W Riverview Blvd Unit 2, Tucson, AZ 85745
• 

  

  /20

  $209,000 Lot/Land

  10576 Buck Ridge Dr Unit 51, Oro Valley, AZ 85737

  • 1.05 Acres
  • $199,048 per Acre

  Nestled in the prestigious guard-gated La Reserve community, this hillside view lot offers a rare opportunity to create your custom desert retreat. Situated at an elevation of 2,740', the property showcases spectacular mountain views from the rear yard, with a designated wilderness area located at the top of the lot, ensuring privacy and a natural backdrop. Unlike most hillside parcels, this lot

  Pam Treece Long Realty

  10576 Buck Ridge Dr Unit 51, Oro Valley, AZ 85737
• 

  

  /12

  $125,000 Lot/Land

  422 E Corte Artura Azul Unit 32, Green Valley, AZ 85614

  • 1.92 Acres
  • $65,104 per Acre

  Colonia Real Custom 1.92-acre home site with Mtn and Valley views. Close to Green Valley shopping and access to I-19. GVR available.

  Gerald Sander, Jr. Sander Realty

  422 E Corte Artura Azul Unit 32, Green Valley, AZ 85614
• 

  

  /24

  $300,000 Lot/Land

  12989 E Cabeza de Vaca St Unit Lot B, Tanque Verde, AZ 85749

  • 3.34 Acres
  • $89,820 per Acre

  This beautiful premier lot ''B'' is in the Northeast corner of Tucson AZ in the highly popular Tanque Verde Valley. Perched on the mountainside of the Catalina Mountains, this lot feature spectacular views of mountains, City lights, sunsets & sunrises, stars and much more. Tucked between the beautiful Molino Canyon & Aqua Caliente Canyon w/ wildlife, saguaros & desert landscaping, gorgeous rock

  Joshua Groch Tierra Antigua Realty

  12989 E Cabeza de Vaca St Unit Lot B, Tanque Verde, AZ 85749
• 

  

  /3

  $59,900 Lot/Land

  000C N Nelson Quihuis Rd, Tucson, AZ 85743

  • 5 Acres
  • $11,980 per Acre

  5 acres of beautiful Arizona desert ready for your new home. Manufactured homes welcome. Horse property with breath taking sunset and mountain views. Quiet, peaceful area with minimal neighbors.

  Joe Vettorel My Home Group

  000C N Nelson Quihuis Rd, Tucson, AZ 85743
• 

  /2

  $72,000 Lot/Land

  3902 S Missiondale Rd Unit 44, Tucson, AZ 85746

  • 5,662 Sq Ft
  • $553,846 per Acre

  Rare development opportunity featuring six contiguous residential parcels totaling approximately 0.97 acre (42,253 sq ft). Five parcels are R-1 zoned offered at $72,000 each and one parcel is R-2 zoned offered at $90,000, providing potential for duplex or multi-family development. Parcels may be purchased individually or together as a package. Ideal for builders, investors, or small residential

  Meagan Brewer Barrett Real Estate

  3902 S Missiondale Rd Unit 44, Tucson, AZ 85746
• 

  

  /42

  $150,000 Lot/Land

  8350 Silver Star Dr, Tucson, AZ 85735

  • 10.08 Acres
  • $14,881 per Acre

  This over-10-acre parcel offers flexibility, infrastructure advantages, and outstanding water access -- making it ideal for a custom home, ranch, or investment hold. The property is equipped with septic systems sized to the maximum allowable people load per acre without requiring alternative septic systems. The systems are installed deep enough to serve the entire parcel by gravity flow, offering

  Victor Cabibo United Real Estate Specialists

  8350 Silver Star Dr, Tucson, AZ 85735
• 

  

  /22

  $125,000 Lot/Land

  TBD W Duval Mine Rd, Green Valley, AZ 85614

  • 3.17 Acres
  • $39,432 per Acre

  Beautiful parcel in Green Valley with just over 3 acres of land with the most amazing views of the Santa Ritas. Land is located right off La Canada and Duval Mine Rd with no HOA, age restriction or GVR! This is a prime location to build your custom home or bring in a manufacture home! Horses are allowed and water and power are nearby! Call me to set up your showing! What a great find at this

  Maritza Marlow Tierra Antigua Realty

  TBD W Duval Mine Rd, Green Valley, AZ 85614
• 

  

  /18

  $195,000 Lot/Land

  877 S Tohono Ridge Place Unit 39, Tucson, AZ 85745

  • 28,749 Sq Ft
  • $295,455 per Acre

  Nestled at the end of a cul de sac surrounded by Tucson Mountain Park, Signature Golf Course, protected wash and beautiful views. Recent new custom homes are over 1.5 million dollars, which make the value of this lot incredible. The Master Plan of Starr Pass is known for it's environment significance. Over 60% open space and embraced by thousands of acres of Wilderness. It's a favorite for,

  Brian Shinn Starr Pass Realty, LLC

  877 S Tohono Ridge Place Unit 39, Tucson, AZ 85745
• 

  

  /9

  $295,000 Lot/Land

  5136 W Monte Carlo Dr Unit 34, Tucson, AZ 85745

  • 39,639 Sq Ft
  • $324,176 per Acre

  Exceptional Tucson Land Opportunity - No HOA, Grandfathered Building Rights!This rare Pima County hillside lot offers grandfathered development rights and no HOArestrictions--giving you the freedom to design and build your dream home withoutcompromise. It boasts sweeping views of the Tucson cityscape and backs up tountouched Sonoran Desert and mountain terrain. Enjoy total privacy and

  David Glinski Real Broker

  5136 W Monte Carlo Dr Unit 34, Tucson, AZ 85745
• 

  

  /10

  $990,000 Lot/Land

  0 N Oracle Rd Unit 225-16, Oro Valley, AZ 85704

  • 1.91 Acres
  • $518,325 per Acre

  UNIQUE ORO VALLEY INFILL OPPORTUNITY! Fabulous location just north of Oracle/Magee intersection with Oracle Rd access. Development or Investment potential. Oro Valley R-S zoning for up to 31 units with a minimum lot size of 5400 sq. ft. Excellent, established multi-family area. With Town of OV approval, build multi/single family residences, business or professional offices, elder care, etc. Some

  Rick Sack Long Realty

  0 N Oracle Rd Unit 225-16, Oro Valley, AZ 85704
• 

  

  /14

  $115,000 Lot/Land

  TBD S Avenue Del Potrillo, Tucson, AZ 85747

  • 3.36 Acres
  • $34,226 per Acre

  Incredible opportunity to own a premier homesite in the desirable Rocking K Ranch Estates! This exceptional lot offers panoramic vistas and breathtaking mountain views that stretch for miles creating the perfect backdrop for your custom dream home. The buildable homesite is ideally positioned to maximize privacy while preserving the surrounding natural beauty and desert landscape. With electric

  Janet Bland eXp Realty

  TBD S Avenue Del Potrillo, Tucson, AZ 85747
• 

  

  /32

  $1,375,000 Lot/Land

  7296 E Stone Canyon Dr, Catalina Foothills, AZ 85750

  • 7.94 Acres
  • $173,174 per Acre

  NEVER BEFORE SEEN in the Tucson market! ONE OF A KIND 7.94 acre site TOWERS HIGH OVER the VENTANA CANYON COUNTRY CLUB; Tucson's premier GOLF & RESORT COMMUNITY at the base of the CATALINA Mountains. Offered for the 1st time, the building site, defined by NATURE, is a; ''SKY ISLAND'' on the edge of a GRANITE WALL dropping into a pristine desert canyon. Create a home with BREATHTAKING views of

  Rick Sack Long Realty

  7296 E Stone Canyon Dr, Catalina Foothills, AZ 85750
• 

  

  /11

  $124,000 Lot/Land

  16110 S Wilmot Rd Unit 1B, Sahuarita, AZ 85629

  • 5.06 Acres
  • $24,506 per Acre

  Beautiful high desert landscape with lush natural vegetation including saguaros, mesquite and prickly pear. Spectacular site with panoramic views in all directions. Part of a 20 acre split into 4 exclusive homesites surrounded by state land. Underground Electric and Telephone to lot lines with shared well. Perfect for individuals looking for custom home site to build their dream home or builder

  Bill McReynolds Genesis Real Estate & Management

  16110 S Wilmot Rd Unit 1B, Sahuarita, AZ 85629
• 

  

  /18

  $850,000 Lot/Land

  13672 N Old Ranch House Rd Unit 1, Marana, AZ 85658

  • 4.17 Acres
  • $203,837 per Acre

  Experience the ultimate in desert luxury with this exceptional 4-acre homesite located within the prestigious gated community of Saguaro Ranch. The serene beauty of Oro Valley, this remarkable property showcases sweeping panoramic views of the Catalina Mountains, an awe-inspiring backdrop for your custom dream home.Enjoy unmatched privacy and tranquility on your expansive estate while still

  Gina Beltran Elate Realty, LLC

  13672 N Old Ranch House Rd Unit 1, Marana, AZ 85658
• 

  

  /19

  $160,000 Lot/Land

  20371 S Sonoita Hwy Unit 7, Vail, AZ 85641

  • 20 Acres
  • $8,000 per Acre

  Most land for sale in Vail, AZ leaves you wondering where your water will come from. This 20-acre parcel already has a shared well at the lot line...in the desert Southwest, that changes everything!A private dirt road leads you to your own slice of Southern Arizona, where the best build site opens up to panoramic mountain views that stretch for miles. Imagine watching breathtaking desert

  Meagan Estees eXp Realty

  20371 S Sonoita Hwy Unit 7, Vail, AZ 85641
• 

  /2

  $16,000 Lot/Land

  17186 W Calle Mapache W Unit 10, Arivaca, AZ 85601

  • 16,552 Sq Ft
  • $42,105 per Acre

  Buy this property individually or purchase it with the adjoining 1174 lot! This lot offers a quiet desert lifestyle with mountain views. Approximately 35 miles from the U.S. - Mexico border and 30 minutes from Green Valley. This is a perfect place to build your home and have your private getaway with panoramic views!

  Apple Thompson NextHome Complete Realty (DBA)

  17186 W Calle Mapache W Unit 10, Arivaca, AZ 85601
• 

  /2

  $550,000 Lot/Land

  14870 W Avra Valley Rd, Marana, AZ 85653

  • 21.1 Acres
  • $26,066 per Acre

  21+ acres fronting on Avra Valley Road just east of the proposed I-11 freeway. The property is comprised of five parcels (see documents) four with water electric and septic tanks. Taxes shown includes all five parcels.. Proposed I-11 is located about 1/4 mile to the west of the property. See maps in documents.

  Lynn Hansen The Negotiators Realty

  14870 W Avra Valley Rd, Marana, AZ 85653
• 

  

  /7

  $1,000,000 Lot/Land

  000 W Sumter Dr, Tucson, AZ 85742

  • 10.49 Acres
  • $95,329 per Acre

  Previous buyer obtained P & Z approval, but cancelled due to lack of funds. Excellent opportunity for developer! Back on Market! Pima County Board of Supervisor approved a proposed rezoning, for apartment project stating the proposed apartment design "is an efficient use of existing infrastructure, implements the Arizona Growing Smarter Acts and conforms to the policies of the Comprehensive Plan"

  Ellen Golden Goldsmith Real Estate

  000 W Sumter Dr, Tucson, AZ 85742
• 

  

  /6

  $30,000 Lot/Land

  0000 W Calle Dos Unit 55, Sahuarita, AZ 85629

  • 4.13 Acres
  • $7,264 per Acre

  Looking for a beautiful Desert setting to Build your CUSTOM DREAM HOME or MANUFACTURED HOME? This one is for YOU! 4.13 acres, providing plenty of space for RANCH LIVING with RURAL PRIVACY, yet still close to city amenities. HORSES allowed, STAR GAZING, & PLENTY OF ROOM to spread out. Come and take a look!Image lot lines are approx. Buyer to verify all.

  Jennifer Talavera My Home Group

  0000 W Calle Dos Unit 55, Sahuarita, AZ 85629
• 

  

  /15

  $149,000 Lot/Land

  1491 S Sandario Rd, Tucson, AZ 85735

  • 20.75 Acres
  • $7,181 per Acre

  20 plus level acres located in the FEMA floodplain with legal access.

  Carl Schroeder Realty Executives Arizona Territory

  1491 S Sandario Rd, Tucson, AZ 85735
• 

  

  /7

  $178,000 Lot/Land

  4568 S 12th Ave Unit 1, Tucson, AZ 85714

  • 9,583 Sq Ft
  • $809,091 per Acre

  Spectacular opportunity to get this lot on 12 ave. Build, dream on this beautiful community This lot has utilities ready to connect, don't wait go and see it Today. You can build a duplex or commercial use.

  Daniel Leal Realty One Group Integrity

  4568 S 12th Ave Unit 1, Tucson, AZ 85714
• 

  

  /4

  $40,000 Lot/Land

  12802 Winkelman Ave N Unit 14, Mt. Lemmon, AZ 85619

  • 5,662 Sq Ft
  • $307,692 per Acre

  Located in the highly sought-after Summerhaven community on Mt. Lemmon in the Santa Catalina Mountains, this rare opportunity includes two adjacent lots being sold together as a package. Build your custom mountain cabin retreat surrounded by towering pines, fresh air, and the peaceful charm that makes Summerhaven so special. With temperatures typically 20-30 degrees cooler than Tucson, it's the

  Tracy Castell Long Realty

  12802 Winkelman Ave N Unit 14, Mt. Lemmon, AZ 85619
• 

  /2

  $90,000 Lot/Land

  3902 S Missiondale Rd Unit 48, Tucson, AZ 85746

  • 13,503 Sq Ft
  • $290,323 per Acre

  Rare development opportunity featuring six contiguous residential parcels totaling approximately 0.97 acre (42,253 sq ft). Five parcels are R-1 zoned offered at $72,000 each and one parcel is R-2 zoned offered at $90,000, providing potential for duplex or multi-family development. Parcels may be purchased individually or together as a package. Ideal for builders, investors, or small residential

  Meagan Brewer Barrett Real Estate

  3902 S Missiondale Rd Unit 48, Tucson, AZ 85746
• 

  

  /29

  $600,000 Lot/Land

  16500 N Ridge Rock Trail, Catalina, AZ 85739

  • 30 Acres
  • $20,000 per Acre

  Nestled amidst the breathtaking backdrop of the majestic Santa Catalina Mountains, this sprawling 30-acre property offers unparalleled beauty and endless possibilities. A custom home has already been designed and permitted. All excavation and site prep has been completed. Nearly one acre of flat pad completed & ready for a new custom home, serene desert getaway, or eco-friendly sanctuary. Minutes

  Michelle Genardini Coldwell Banker Realty

  16500 N Ridge Rock Trail, Catalina, AZ 85739
• 

  /2

  $395,000 Lot/Land

  11876 N Vista Del Sol Unit 21, Oro Valley, AZ 85742

  • 3.31 Acres
  • $119,335 per Acre

  Very unique opportunity to own estate size parcel in the heart of Oro Valley. Enjoy Catalina mountain views with very easy to build flat lot. This lot is part of Sunset Canyon Estates, a small enclave of custom homes. Design your own custom home with our builder or choose from one of our floorplans. Utilities at lot line. Call to learn more about this lot and opportunities for a custom home.

  David Swan Long Realty

  11876 N Vista Del Sol Unit 21, Oro Valley, AZ 85742
• 

  /2

  $125,000 Lot/Land

  182 E Placita Haciendas Del Lago Unit 17, Sahuarita, AZ 85629

  • 13,503 Sq Ft
  • $403,226 per Acre

  Experience luxury living in the heart of Rancho Sahuarita's premier gated community — This lot is 1 of the final 3 lots available in this limited small enclave - Welcome to Haciendas Del Lago. This residential lot offers the perfect opportunity to create your custom dream. With utilities already at the lot line, this homesite is primed for construction, allowing you to focus on designing a home

  Laura Moreno RE/MAX Portfolio Homes

  182 E Placita Haciendas Del Lago Unit 17, Sahuarita, AZ 85629
• 

  

  /5

  $530,000 Lot/Land

  3860 W Aldrin Dr Unit 31, Marana, AZ 85658

  • 1.04 Acres
  • $509,615 per Acre

  Discover the beauty of desert living at its finest on this stunning 1.04-acre homesite in the prestigious Moonlight Canyon section of Saguaro Ranch. Framed by dramatic canyon walls and panoramic mountain views, this property offers the perfect canvas to design a one-of-a-kind luxury residence that blends seamlessly with its natural surroundings. Set within one of Tucson's most exclusive gated

  Eduardo Escobido The Agency

  3860 W Aldrin Dr Unit 31, Marana, AZ 85658
• 

  

  /13

  $339,000 Lot/Land

  2510 N Avenida Sorgo -- N Unit 97, Tucson, AZ 85749

  • 4.79 Acres
  • $70,772 per Acre

  Come build your dream home in sought after La Cebadilla Estates. 4.79 acre lot Located in Northeast Tucson nestled Between 2 mountain ranges and near Saguaro National Park- East. Fantastic Mountain views, an abundance of mature Saguaro Cacti, native desert vegetation, and peaceful starry nights. This community offers the residents a spring fed private lake, numerous hiking and horse trails.

  Lisa Freeman Tierra Antigua Realty, LLC

  2510 N Avenida Sorgo -- N Unit 97, Tucson, AZ 85749
• 

  

  /10

  $68,900 Lot/Land

  2981 Sahuarita Rd Unit 16, Vail, AZ 85641

  • 1.18 Acres
  • $58,390 per Acre

  A septic percolation test was completed within the last 12 months. Take in the Breathtaking Mountain Views on this sprawling 1.18-acre vacant lot in Vail! The land has minimal grade changes with an abundance of varied high desert plants. The northeast border of the property runs along a wash with some added vegetation. The FEMA map shows this parcel to be in an X zone with minimal flood hazard

  Richard Harless AZ Flat Fee

  2981 Sahuarita Rd Unit 16, Vail, AZ 85641
• 

  

  /9

  $50,000 Lot/Land

  12850 W Gunsmoke Rd Unit 10, Tucson, AZ 85736

  • 4.84 Acres
  • $10,331 per Acre

  Enjoy stunning mountain views and lush desert vegetation on this prime parcel. Ideal for an investment opportunity or to build your custom dream home. Horse property by Zoning. Secluded setting with convenient access and easy drive to town. Electric available at the lot line.

  Jessica Sanchez Realty Executives Arizona Territory

  12850 W Gunsmoke Rd Unit 10, Tucson, AZ 85736

Showing Results 281 - 320, Page 8 of 18