New Construction Homes in Libby, MT

/59
$1,022,000 Custom Home

2191 Houghton Creek Rd, Libby, MT 59923
- 4 Beds
- 2 Baths
- 1,480 Sq Ft
Discover this stunning new build—a beautifully crafted 4-bedroom, 2-bath home that brings exceptional design to a magnificent wilderness setting! Nestled on over 20 acres with direct access to hundreds of acres of Kootenai National Forest, this property offers the ultimate in privacy, recreation, utility, and style. Enjoy spacious, light-filled living areas, high-end finishes, and thoughtful

Alden Blaize

Real Broker, LLC

2191 Houghton Creek Rd, Libby, MT 59923
Explore Libby
/21
$248,500 Lot/Land

Lot 2C Liberty Ln, Libby, MT 59923
- 4.7 Acres
- $52,850 per Acre
Lot 2C of Liberty Lane offers a rare opportunity to own 4.702 acres in the scenic mountain town of Libby, Montana. This vacant parcel borders United States Forest Service land, providing exceptional views and direct access to miles of public lands for hiking, hunting, and outdoor recreation. Additionally it is just a short drive from the renowned Kootenai River. Electric has already been

Brody Goucher

CENTURY 21 Summit Realty

Lot 2C Liberty Ln, Libby, MT 59923
/38
$350,000 Custom Home

22 Long St, Libby, MT 59923
- 1 Bed
- 1 Bath
- 960 Sq Ft
A truly unique property featuring a 1 bedroom, 1 bath home with a full main-level 2-car garage and living space above. The upstairs showcases an open layout with peaks and valleys that create architectural interest and charm. The lower-level garage offers a convenient workshop, laundry hookups, and flexible space ideal for hobbies, storage, or additional workspace. Sitting on over half an acre,

Alice Hayes Team Hayes Realty, LLC

22 Long St, Libby, MT 59923
/54
$765,000 Custom Home

312 Lodge Pole Way, Libby, MT 59923
- 3 Beds
- 2 Baths
- 1,890 Sq Ft
Discover the perfect blend of comfort, style, and country living in this newly built custom ranch-style home set on 5 level acres, with one side bordering U.S. Forest Service land. Inside, the home exudes quality craftsmanship, featuring custom cabinetry with soft-close drawers and cupboards, quartz countertops, high-end appliances, 9-foot ceilings, waterproof luxury vinyl flooring, and a

John Ague Tamarack Realty

312 Lodge Pole Way, Libby, MT 59923
/26
$1,024,000 Lot/Land

Nhn McGinnis Meadows Unit Bayhorse Road Sect, Libby, MT 59923
- 640 Acres
- $1,600 per Acre
Escape to your own private wilderness on this expansive 640-acre property, offering a haven for outdoor enthusiasts and nature lovers alike. Perfect for recreational activities like hunting, hiking, ATV riding, and snowmobiling, this land provides endless adventures against the backdrop of stunning mountain views. Situated southwest of Happy's Inn between Kalispell and Libby, this property boasts

Jason Hyndman PureWest Real Estate - Kalispell

Nhn McGinnis Meadows Unit Bayhorse Road Sect, Libby, MT 59923
/67
$1,024,000 Lot/Land

Nhn McGinnis Meadows Unit Bayhorse Road Sect, Libby, MT 59923
- 640 Acres
- $1,600 per Acre
Discover a sprawling 635-acre retreat nestled in the serene wilderness between Kalispell and Libby, southwest of Happys Inn. This expansive property is a paradise for outdoor enthusiasts, offering a variety of recreational activities such as hunting, hiking, ATVing, and snowmobiling. Enjoy unrivaled privacy as you explore the breathtaking landscape and revel in the beauty of nature. Admire the

Jason Hyndman PureWest Real Estate - Kalispell

Nhn McGinnis Meadows Unit Bayhorse Road Sect, Libby, MT 59923
/82
$756,000 Lot/Land

0 Nhn Vermillion Creek Rd, Libby, MT 59923
- 560 Acres
- $1,350 per Acre
Escape to a vast 560-acre paradise nestled in the wilderness between Kalispell and Libby, southwest of Happys Inn. This expansive property is a haven for outdoor enthusiasts, offering a plethora of recreational activities including hunting, hiking, ATVing, and snowmobiling. Enjoy the utmost privacy as you explore the stunning landscape and immerse yourself in nature's beauty. Revel in the

Jason Hyndman PureWest Real Estate - Kalispell

0 Nhn Vermillion Creek Rd, Libby, MT 59923
/55
$1,024,000 Lot/Land

Nhn McGinnis Meadows Unit Bayhorse Road Sect, Libby, MT 59923
- 640 Acres
- $1,600 per Acre
Discover your own slice of paradise on this expansive 640-acre property nestled in a serene and private setting. Ideal for outdoor enthusiasts, this land offers endless recreational opportunities such as hunting, hiking, ATV riding, and snowmobiling against the backdrop of breathtaking mountain views. Located southwest of Happy's Inn, between Kalispell and Libby, this picturesque property

Jason Hyndman PureWest Real Estate - Kalispell

Nhn McGinnis Meadows Unit Bayhorse Road Sect, Libby, MT 59923
/87
$1,024,000 Lot/Land

Nhn Whitney Lake Rd, Libby, MT 59923
- 640 Acres
- $1,600 per Acre
Escape to your own private wilderness on this expansive 640-acre property, offering a haven for outdoor enthusiasts and nature lovers alike. Perfect for recreational activities like hunting, hiking, ATV riding, and snowmobiling, this land provides endless adventures against the backdrop of stunning mountain views. Situated southwest of Happys Inn between Kalispell and Libby, this property boasts

Jason Hyndman PureWest Real Estate - Kalispell

Nhn Whitney Lake Rd, Libby, MT 59923
/109
$1,024,000 Lot/Land

0 Nhn Elk Creek Unit McGinnis Meadows R, Libby, MT 59923
- 640 Acres
- $1,600 per Acre
640 acres nestled along Elk Creek - McGinnis Meadows Road in Section 11. This remarkable property offers a unique opportunity for outdoor enthusiasts, perfect for recreation such as hunting, hiking, ATV riding, and snowmobiling. Experience the serenity of nature with breathtaking mountain views and a seasonal creek that enhances the landscape's beauty. Privacy is paramount here, as the land is

Jason Hyndman PureWest Real Estate - Kalispell

0 Nhn Elk Creek Unit McGinnis Meadows R, Libby, MT 59923
/115
$688,500 Lot/Land

0 Nhn Vermillion Creek Rd, Libby, MT 59923
- 510 Acres
- $1,350 per Acre
Discover the ultimate outdoor enthusiast's paradise at this sprawling 510-acre property nestled in the picturesque wilderness between Kalispell and Libby. Boasting an idyllic location southwest of Happy's Inn, this expansive estate offers a haven for recreational activities such as hunting, hiking, ATVing, snowmobiling, and more. Privacy abounds in this serene setting, where you can escape the

Jason Hyndman PureWest Real Estate - Kalispell

0 Nhn Vermillion Creek Rd, Libby, MT 59923
/99
$1,573,000 Lot/Land

Nhn East Fisher Rd, Libby, MT 59923
- 605 Acres
- $2,600 per Acre
Indulge in the ultimate outdoor living experience with this expansive 605-acre property situated in the serene wilderness between Kalispell and Libby, southwest of Happys Inn. Boasting a prime location for recreational activities such as hunting, hiking, ATVing, and snowmobiling, this estate is a haven for adventure seekers and nature lovers alike. Offering unparalleled privacy and breathtaking

Jason Hyndman PureWest Real Estate - Kalispell

Nhn East Fisher Rd, Libby, MT 59923
/7
$158,000 Lot/Land

TBD Granite Lake Rd Unit 2, Libby, MT 59923
- 2.92 Acres
- $54,110 per Acre
This 2.92 acre lot offers a prime location 5 minutes from Libby. Situated close to a golf course, it provides ideal setting for golf enthusiasts and those seeking a peaceful , scenic environment. This lot is coveniently located near a walking path, cross- country ski course, various hiking trails and offers endless outdoor activities. with ample space and modern amenities, it is a perfect

Roby Bowe RE/MAX Lifestyle Properties

TBD Granite Lake Rd Unit 2, Libby, MT 59923
/10
$300,000 Lot/Land

79 Fallen Bear Ln, Libby, MT 59923
- 3.43 Acres
- $87,464 per Acre
This level 3.43 acre parcel with a 60 GPM well, approved septic, and power nearby. Enjoy the small artesian stream, Spring Creek, that originates on this parcel and runs year-round. Livestock and manufactured homes allowed! No HOA. Located just 10 miles south of Libby. The adjacent lot is also available if you need more acreage. Seller can install electrical service and septic system for

Jay Dinning Libby Troy Realty

79 Fallen Bear Ln, Libby, MT 59923
/22
$149,500 Lot/Land

966 Greers Ferry Rd, Libby, MT 59923
- 1.15 Acres
- $130,340 per Acre
Look at that view! Perfect size parcel in great neighborhood ready to build your dream home on! Community water available, electricity at property line, level lot ready for your project. This area boasts easy access to forest service, close to Kootenai River boat ramp, not too far from town but far enough to be peaceful. Hunting, fishing, hiking, swimming, boating, skiing and every form of

Karla Barnes RE/MAX Lifestyle Properties

966 Greers Ferry Rd, Libby, MT 59923
/46
$589,000 Lot/Land

110 Verna Ct, Libby, MT 59923
- 11.07 Acres
- $53,207 per Acre
Over 11 acres of gorgeous NorthWest MT with a creek running through it, all flat and usable, with mature trees, pasture, and mountain views. Enjoy the freedom of true Montana property with no restrictive covenants! Take advantage of the seclusion that only a large parcel of land bordering USFS can provide. Enjoy the outdoors by hiking, hunting, biking, or horseback riding right out your backdoor.

Douglas DeShazer DeShazer Ryan Realty

110 Verna Ct, Libby, MT 59923
/6
$134,000 Lot/Land

TBD Granite Lake Rd Unit 6, Libby, MT 59923
- 3.42 Acres
- $39,181 per Acre
This 3.42 acre lot offers a prime location 5 minutes form Libby. Situated close to a golf course, it provides a ideal setting for golf enthusiasts and those seeking a peaceful, scenic environment. This lot is conveniently located near a walking path, cross-country ski course, various hiking trails and offers endless outdoor activities. With ample space and modern amenities, it is perfect location

Roby Bowe RE/MAX Lifestyle Properties

TBD Granite Lake Rd Unit 6, Libby, MT 59923
/8
$325,000 Lot/Land

107 E Minnow Ct, Libby, MT 59923
- 8.57 Acres
- $37,936 per Acre
This 8.567-acre piece of heaven is tucked away in a quiet, desirable neighborhood. Whether you are looking to build a forever home, establish a seasonal basecamp, or invest in a piece of Last Best Place real estate, this location delivers unparalleled peace and privacy. It is one mile from Happy's Inn.Surrounded by the breathtaking landscapes that make Northwest Montana legendary, this

Amber Beatty RE/MAX River View

107 E Minnow Ct, Libby, MT 59923
/29
$950,000 Lot/Land

2013 Five Mile Creek Rd, Libby, MT 59923
- 38.79 Acres
- $24,491 per Acre
5 Mile ranch land! 38 acres on Five Mile Creek north of Libby and just north of the Koocanusa Marina! Secluded and off-grid, this productive pasture ground has 5 Mile Creek and two tributaries running through it. Numerous building sites for your off-grid dream home or enjoy it as a wilderness retreat. Composed of two parcels, this property is one of very few privately owned parcels in the area.

Sharon Denton Clearwater Montana Properties - Troy

2013 Five Mile Creek Rd, Libby, MT 59923
/50
$1,024,000 Lot/Land

NHN Elk Creek - McGinnis Meadows Road Section 11, Libby, MT 59923
- 640 Acres
- $1,600 per Acre
640 acres nestled along Elk Creek - McGinnis Meadows Road in Section 11. This remarkable property offers a unique opportunity for outdoor enthusiasts, perfect for recreation such as hunting, hiking, ATV riding, and snowmobiling. Experience the serenity of nature with breathtaking mountain views and a seasonal creek that enhances the landscape's beauty. Privacy is paramount here, as the land is

Jason Hyndman PureWest Real Estate - Kalispell

NHN Elk Creek - McGinnis Meadows Road Section 11, Libby, MT 59923
/6
$143,000 Lot/Land

TBD Granite Lake Rd Unit 7, Libby, MT 59923
- 4.53 Acres
- $31,567 per Acre
This 4.53 acre lot offers a prime location 5 minutes from Libby. Situated close to a golf course, it provides a ideal setting for golf enthusiasts and those seeking a peaceful, scenic environment. This lot is conveniently located near a walking path, cross-country ski course, various hiking trails and offers endless outdoor activities. With ample space and modern amenities, it is perfect location

Roby Bowe RE/MAX Lifestyle Properties

TBD Granite Lake Rd Unit 7, Libby, MT 59923
/34
$399,000 Lot/Land

58 Loon Connector Rd, Libby, MT 59923
- 5.15 Acres
- $77,551 per Acre
This 5-acre parcel, with Fisher River frontage would be an excellent location for your Montana dream home, cabin or weekend get-a- way. Located near Happy's Inn, Fisher River, Thompson Chain of Lakes state park, plus all the lakes including Bootjack, Horseshoe, Crystal and Upper and Lower Thompson Lakes. Pines at Fisher River subdivision offers a gated entrance, 33-acre community park, paved road

Sharon Denton Clearwater Montana Properties - Troy

58 Loon Connector Rd, Libby, MT 59923
/15
$1,200,000 Lot/Land

NHN Arabian Ln, Libby, MT 59923
- 90 Acres
- $13,333 per Acre
Discover the endless possibilities on this incredible 90-acre parcel in beautiful Northwest Montana. Whether you're dreaming of a horse property, hobby farm, ranch, or private mountain retreat, this expansive acreage offers the space and flexibility to make your vision a reality. With no restrictive covenants, you'll enjoy the freedom to build, farm, raise livestock, or create the country

Shawna Norry RE/MAX Lifestyle Properties

NHN Arabian Ln, Libby, MT 59923
/25
$1,150,000 Lot/Land

TBD National Forest Development Road 2300, Libby, MT 59923
- 206.61 Acres
- $5,566 per Acre
Embrace the allure of Montana with this extraordinary 206-acre property, a true mountain paradise nestled among several area trails and lakes. Steeped in rich history, this secluded haven is home to the historic King Mine, where the remnants of its past operations—tracks, carts, and timbers—can still be seen and is the perfect property for your off-grid mountain home. The seller has cleared

Jaylynn Meyers Clearwater Montana Properties - Libby

TBD National Forest Development Road 2300, Libby, MT 59923
/20
$145,000 Lot/Land

Nhn Education Way, Libby, MT 59923
- 30,492 Sq Ft
- $207,143 per Acre
Welcome to one of the most beautiful lots in Libby, Montana! This lot was going to house 2 new duplexes. With the failure of the Assisted Living Complex now where Dollar General is, the Contractor has decided to sell. The lot has a small dip running parallel to Education Way; this can be filled in to satisfy building codes for a home or a business specified in the zoning. This is in the City

Dhana Nelson RE/MAX Lifestyle Properties

Nhn Education Way, Libby, MT 59923
/7
$117,980 Lot/Land

Lot 5 Panoramic View Dr, Libby, MT 59923
- 3.47 Acres
- $34,000 per Acre
Bring your plans to life on this gently sloped 3+ acre property featuring breathtaking views. This site borders Stimson Lumber land for enhanced privacy, and presents a versatile opportunity for investment, recreation, or future development. From quiet mornings to star-filled nights, this property captures the essence of Montana living while still being conveniently located near town.

Shelly Christian DeShazer Ryan Realty

Lot 5 Panoramic View Dr, Libby, MT 59923
/27
$599,000 Lot/Land

467 Wolf Creek Rd, Libby, MT 59923
- 120 Acres
- $4,992 per Acre
Unique opportunity to own 120 acres surrounded by state and federal land. Discover the perfect remote escape in Northwest Montana. Meticulously cared for by a dedicated land company and selectively logged for timber, this property offers a pristine, vibrant forest setting. Nestled near the Kootenai National Forest, it provides unparalleled privacy and tranquility, surrounded by diverse wildlife.

Tammy Purdy Coldwell Banker Mountain Properties

467 Wolf Creek Rd, Libby, MT 59923
/28
$269,000 Lot/Land

Tbd, Lot 5 Parmenter Dr, Libby, MT 59923
- 3.08 Acres
- $87,338 per Acre
Remarks: These gorgeous lots will be the ideal location for your Montana dream home! Parmenter Creek touches each lot as it leaves the Cabinet Wilderness on the way to the Kootenai River. Cottonwoods, alders and evergreens offer seclusion, natural beauty, and shelter for passing wildlife. Listen to the water and birds as you enjoy your morning coffee or evening hours relaxing. Building sites are

Sharon Denton Clearwater Montana Properties - Troy

Tbd, Lot 5 Parmenter Dr, Libby, MT 59923
/20
$245,000 Lot/Land

4577 Quartz Creek Rd, Libby, MT 59923
- 21.72 Acres
- $11,280 per Acre
Escape to your own Montana wilderness retreat on 21.72 private, forested acres just minutes from Libby. Surrounded by breathtaking mountain views and bordering Forest Service land on two sides, this secluded off-grid property offers unmatched privacy and direct access to thousands of acres of public land. Enjoy endless opportunities for horseback riding, ATV adventures, hunting, hiking, and

Lisa Hampton ERA Lambros Real Estate Kalispell

4577 Quartz Creek Rd, Libby, MT 59923
/9
$225,000 Lot/Land

NHN Lot 42 Loon Connector Rd, Libby, MT 59923
- 5.8 Acres
- $38,806 per Acre
Welcome to your own piece of Montana paradise, located just minutes from the beautiful Thompson Chain of Lakes and Happy's Inn. This corner lot in the Fisher River Subdivision offers the perfect opportunity to create your ideal recreational getaway. Right across the road is thousands of acres of public land to explore. You'll have endless opportunities for riding, hiking, exploring, and enjoying

Carli Yarde NorthScapes Realty

NHN Lot 42 Loon Connector Rd, Libby, MT 59923
/7
$148,000 Lot/Land

TBD Granite Lake Rd Unit 4, Libby, MT 59923
- 2.56 Acres
- $57,812 per Acre
This 2.56 acre lot offers a prime location 5 minutes from Libby. Situated close to a golf course, it provides a ideal setting for golf enthusiasts and those seeking a peaceful, scenic environment. This lot is conveniently located near a walking path, cross-country ski course, various hiking trails and offers endless outdoor activities. With ample space and modern amenities, it is perfect location

Roby Bowe RE/MAX Lifestyle Properties

TBD Granite Lake Rd Unit 4, Libby, MT 59923
/50
$499,000 Lot/Land

Nhn Warland Creek Rd, Libby, MT 59923
- 48.38 Acres
- $10,314 per Acre
Situated along the stunning scenic corridor of Highway 37 that meanders beneath the stone cliffs and along the shores of Lake Koocanusa sits a small patch of coveted private land. Created when the river was dammed, the prime location is truly one of a kind. Surrounded by thousands of acres of Forest Service land the recreational boundary is endless with a privacy and serenity that are hard to

Gretchen Lancaster Lancaster and Company, Premier Properties

Nhn Warland Creek Rd, Libby, MT 59923
/7
$225,000 Lot/Land

00 Skyline Way, Libby, MT 59923
- 4.28 Acres
- $52,632 per Acre
Nice buildable piece of property at the end of Skyline road. Property has had some thinning done and it's easy to walk all around. Lots of trees still to build your dream home situated in a calming setting. Lots of wildlife . Covenants on the property protect it but you can have a couple horses if you want. Only a few miles from town.

Doreen Gullingsrud DeShazer Ryan Realty

00 Skyline Way, Libby, MT 59923
/50
$1,024,000 Lot/Land

Nhn, Libby, MT 59923
- 640 Acres
- $1,600 per Acre
Escape to your own private wilderness on this expansive 640-acre property, offering a haven for outdoor enthusiasts and nature lovers alike. Perfect for recreational activities like hunting, hiking, ATV riding, and snowmobiling, this land provides endless adventures against the backdrop of stunning mountain views. Situated southwest of Happy's Inn between Kalispell and Libby, this property boasts

Jason Hyndman PureWest Real Estate - Kalispell

Nhn, Libby, MT 59923
/15
$195,000 Lot/Land

Nhn S Acm Rd, Libby, MT 59923
- 4.99 Acres
- $39,078 per Acre
Looking for a getaway property, this might be it. 4.99 acres lots of trees almost level. Located just south of Middle Tompson Lake. Power is available septic will be also. Located 1 mile from the boat launch at Logan State Park

Brad Borden Montana Brokers, Inc.

Nhn S Acm Rd, Libby, MT 59923
/8
$150,000 Lot/Land

84 Treasure Mountain Ln, Libby, MT 59923
- 1.15 Acres
- $130,435 per Acre
This beautiful, one-acre, level to gently sloping parcel, with plenty of trees for privacy, is ready to build on. Utilities are nearby and septic has been approved. Build your dream home or bring one in. Modular or manufactured homes are allowed. Seller can install electrical service and septic system for additional cost. Installing power or sewer may qualify this property as improved. Improved

Jay Dinning Libby Troy Realty

84 Treasure Mountain Ln, Libby, MT 59923
/30
$420,000 Lot/Land

Tbd, Lot 3 Parmenter Rd, Libby, MT 59923
- 4.83 Acres
- $86,957 per Acre
Remarks: These gorgeous lots will be the ideal location for your Montana dream home! Parmenter Creek touches each lot as it leaves the Cabinet Wilderness on the way to the Kootenai River. Cottonwoods, alders and evergreens offer seclusion, natural beauty, and shelter for passing wildlife. Listen to the water and birds as you enjoy your morning coffee or evening hours relaxing. Building sites are

Sharon Denton Clearwater Montana Properties - Troy

Tbd, Lot 3 Parmenter Rd, Libby, MT 59923
/25
$98,900 Lot/Land

RV Lot 13-17 Montana Wild Dr, Libby, MT 59923
- 13,503 Sq Ft
- $319,032 per Acre
Special “pre-purchase” price! Owner is willing to pre-sell at a special price while the subdivision is getting finalized. Beautiful RV lot with scenic lake view adjacent to Lake Koocanusa with hard to find lake access! Across from the Barron Creek boat ramp and sandy beach area you have private and convenient access to enjoy all the spectacular Lake Koocanusa has to offer. Montana Wild Resort

Douglas DeShazer DeShazer Ryan Realty

RV Lot 13-17 Montana Wild Dr, Libby, MT 59923
/7
$330,000 Lot/Land

TBD Lot12 Schrieber Lake Subdivision, Libby, MT 59923
- 4.77 Acres
- $69,182 per Acre
Roby Bowe RE/MAX Lifestyle Properties

TBD Lot12 Schrieber Lake Subdivision, Libby, MT 59923
/9
$900,000 Lot/Land

TBD Lot 10 north Schreiber Lake Subdivision, Libby, MT 59923
- 47.57 Acres
- $18,919 per Acre
Scenic Bare Land in New Subdivision-Just 20 Miles from Town This stunning parcel offers the perfect canvas to build your dream home in Montana's natural beauty. Located in a brand-new subdivision just 20 miles from town, the property features breathtaking views of the surrounding mountains and serene Schreiber Lake. Enjoy daily encounters with Montana's abundant wildlife and the peaceful

Roby Bowe RE/MAX Lifestyle Properties

TBD Lot 10 north Schreiber Lake Subdivision, Libby, MT 59923

Showing Results 1 - 40, Page 1 of 3

New Homes Montana Libby

Frequently Asked Questions

What warranties come with a new construction home?

Most Builders provide a 1-year workmanship warranty, a 2-year systems warranty, and a 10-year structural warranty.

What upgrades are included in a new build vs what is considered extras?

Builders in Libby, MT usually offer a base package and optional upgrades such as flooring, countertops, and appliances.

Do new construction homes in Libby, MT hold their value?

Yes, especially in fast-growing areas of Libby, MT. Resale values are supported by population growth, job opportunities, and desirable schools.

What happens if I find issues after moving in to new build?

Builders typically provide a post-move in warranty service to address punch list items.

How to Buy a Home How to Finance a Home How to Sell a Home

Libby Types of Homes for Sale

More About Living in Libby

Libby Homes for Sale by Style

New Homes in Nearby Cities

New Homes in Nearby Counties

Lincoln County New Homes

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.

Homes.com Licensing Information

§ 442-H New York Standard Operating Procedures

New York Fair Housing Notice

TREC: Information about brokerage services, Consumer protection notice

California DRE #01937601

Contact Homes.com Brokerage