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Size: 3.03 Acres
Home: 6 beds - 6 full baths - 2 half baths - 7,402 Sq Ft

Johnston Mansion for Sale

Offered as a truly one-of-a-kind estate, the Johnston Mansion combines timeless elegance, sustainable innovation, and serene country living—all just minutes from modern conveniences. Step inside and discover an open-concept floor plan featuring exquisite hardwood floors, six fireplaces, and heated floors in both the basement and garage. The gourmet kitchen boasts quartz countertops, stainless steel appliances, and a spacious walk-in pantry—ideal for entertaining or everyday living.

Highlights

The Johnston Mansion combines timeless elegance, sustainable innovation, and serene country living
Surrounded by open acreage and mature trees
This property provides a rare blend of privacy and accessibility.
Sustainable Design

Description

3.03 Acres in Grimes, IA - $1,695,000

Johnston Mansion – A Masterpiece of Luxury and Sustainability

Experience the perfect harmony of timeless elegance and cutting-edge sustainability in this remarkable 11,000 sq ft Mediterranean-style estate. Set on a private, tree-dotted 3-acre property, this residence embodies refined living, innovative design, and eco-conscious comfort.

A Home of Uncompromising Quality

From the moment you enter, the home captivates with its grand open floor plan, handcrafted hardwood floors, and six fireplaces that add warmth and charm throughout. The chef’s kitchen is a showpiece of design, featuring quartz countertops, premium stainless steel appliances, and a spacious walk-in pantry—perfect for hosting and everyday luxury.

The main level features two private owner’s suites, each with spa-inspired baths, while the upper level offers four spacious bedrooms—ideal for family and guests. Entertainment abounds with a dedicated theater and game room, designed for relaxation and memorable gatherings.

A 3,500 sq ft unfinished lower level invites your imagination—create a wine cellar, wellness retreat, or private art studio to complete your vision.

Sustainable Luxury at Its Finest

This net-zero estate sets a new standard for responsible luxury. Engineered for long-term efficiency and comfort, it incorporates:

  • High-performance insulation and airtight construction for year-round comfort

  • Durable metal roof and Endur insulated windows for longevity and energy retention

  • Geothermal heating and cooling system for sustainable climate control

  • Renewable energy greenhouse, providing both function and innovation

Every detail has been thoughtfully designed to reduce environmental impact while enhancing modern comfort—offering the rare opportunity to live luxuriously and sustainably.

Tranquility and Space

Nestled in a serene rural setting, this estate offers privacy without isolation. The property features lush pastures, mature trees, and expansive grassy areas, ideal for outdoor recreation or equestrian pursuits.

Property Highlights
• 3 private acres with pasture and mature landscaping
• Horses permitted
• Heated garage and basement floors
• City water and septic system
• Concrete road access
• Located outside city limits for added privacy

The Johnston Mansion is more than a home—it’s a lifestyle. Perfectly blending eco-conscious innovation with elevated design, this estate offers a rare opportunity to own a property where sustainability meets sophistication.

Read More

From elevation to risk assessment

Search for detailed parcel information including; Elevation & Vegetation Maps, Ownership Information, Detailed Parcel Information, Crop History Map, Soil Survey Productivity Data, and more.

Research Parcel Information

Directions

Head north on Hwy 141. Take Exit 1 (Grimes exit) and go east. Go north at roundabout (100th) St. Home will be on east side of the road.

Property Video

Resources

Links
Property Website
Contact Seller

RE/MAX Precision

Visit Website
(515) 230-0488
License # S69108000
Ankeny, IA
Premium Seller

About Chris Kew

Chris Kew represents the region's finest properties with exceptional skill using the most innovative technologies currently available. Chris Kew offers ultimate privacy and security, speed, and efficiency. His years of full-time experience have given him a clear understanding of the mindset of home buyers and sellers and a thorough understanding of the regional marketplace.

Seller Resources

Chris Kew

RE/MAX Precision
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