John & Deb Austin logo

1658 Mcilvaine Court, MARCO ISLANDMarco Island, FL 34145Price: $4,200,000

  • Price: $4,200,000
  • Est. Mortgage of $/month
  • 1 Day on Market
$
$
%
$/month over payments
Federal 30-year interest rate: 6.66% last updated on Aug 27, 2026
* All Figures are estimates. Check with your bank or proposed mortgage company for actual interest rates.
This product uses the FRED® API but is not endorsed or certified by the Federal Reserve Bank of St. Louis.
  • $4,200,000List Price
  • 4Bedrooms
  • 5Bathrooms
  • 0.5Acreage
  • 5,700Square Feet
  • 226026457MLS Number

Ask A Question

Listing Tools

An Estate Designed to Feel Like Your Own Private Island Retreat. Etched-glass entry doors and a soaring two-story foyer crowned by a striking cupola introduces a residence defined by timeless architecture, exceptional craftsmanship, and grand scale. Rich ceiling treatments, custom lighting, an integrated Sonos sound system, and refined finishes carry throughout the home. The Great Room is crowned by a dramatic octagonal coffered lantern ceiling with warm Bahama-inspired wood louvers, a fireplace, and zero-corner pocketing sliding glass doors that create a seamless transition to the waterfront lanai. At the heart of the home, the chef's kitchen blends beauty and function with striking stone countertops and backsplash, illuminated custom cabinetry, premium JennAir appliances, a six-burner gas range, oversized island with breakfast bar, casual dining, and generous space for entertaining. An executive office with multiple workstations provides an ideal study or den. The first-floor primary suite is a sanctuary overlooking the water, with custom walk-in closets, wet bar, adjoining fitness room, and a spa-inspired bath featuring a distinctive elevated jetted soaking tub, cosmetic vanity, and an oversized walk-in shower. A private first-floor guest suite offers exceptional comfort for visitors. Upstairs, two additional ensuite guest bedrooms--including one thoughtfully designed as a private home theater with its own fireplace--open to a waterfront balcony that captures the long-water views. Outside, Bahama-inspired louvered ceilings extend across the expansive covered lanai, where generous lounge and dining areas create an exceptional setting for waterfront entertaining. The impressive outdoor kitchen features a built-in grill, dedicated cooking area, seated bar, refrigerator, sink, and abundant serving space for effortless gatherings. Towering palms and lush tropical landscaping frame the saltwater pool, cascading waterfall spa, with outdoor fireplace, pool bath, and sweeping waterfront views, creating an atmosphere of privacy and island elegance. Both the main lanai and upper balcony are fully screened, allowing year-round enjoyment of Southwest Florida's coastal climate. A dramatic spiral staircase leads to the a rooftop terrace (new roof in 2025), where commanding Gulf views provide an unforgettable backdrop for spectacular sunsets. Completing this exceptional estate are a 38kW whole-home generator, a 1,000-gallon propane tank, 2 new A/C units 2026, re-roof in 2025, and an oversized three-car garage. The rare oversized fenced side yard provides valuable street-to-water access, making it easy to transport paddleboards, kayaks, watercraft, and boating gear to the composite dock with dual boat lifts (35,000 lb and 20,000 lb), a fish-cleaning station, dock lighting, water, and electric. From there, Marco Island's extraordinary waterways and the Gulf become an extension of your backyard, defining the quintessential Southwest Florida waterfront lifestyle.

Property Details

Interior Features

Exterior Features

Utilities and Appliances

Community

Map Location

Listed by Pat Wilkins of Re/Max Alliance Group

Based on information submitted to Gulf Coast as of August 29, 2026 . All data is obtained from various sources and has not been, and will not be, verified by broker or Gulf Coast.  All information should be independently reviewed and verified for accuracy. Properties may or may not be listed by the office/agent presenting the information. NOTICE: Many homes contain recording devices, and buyers should be aware they may be recorded during a showing.

Hi there! How can we help you?

Contact us using the form below or give us a call.

Send Us A Message:

I agree to be contacted by John & Deb Austin via call, email, and text for real estate services. To opt out, you can reply ‘stop’ at any time or reply ‘help’ for assistance. You can also click the unsubscribe link in the emails. Message and data rates may apply. Message frequency may vary. Privacy Policy.

Do not fill in this field:

This site is protected by reCAPTCHA and the Google Privacy Policy and Terms of Service apply.

Hi there! How can we help you?

Contact us using the form below or give us a call.

Send Us A Message:

Do not fill in this field:

This site is protected by reCAPTCHA and the Google Privacy Policy and Terms of Service apply.

Hi there! How can we help you?

Contact us using the form below or give us a call.

Send Us A Message:

Do not fill in this field:

This site is protected by reCAPTCHA and the Google Privacy Policy and Terms of Service apply.

Do not fill in this field:

This site is protected by reCAPTCHA and the Google Privacy Policy and Terms of Service apply.

Do not fill in this field:

This site is protected by reCAPTCHA and the Google Privacy Policy and Terms of Service apply.

Do not fill in this field:

This site is protected by reCAPTCHA and the Google Privacy Policy and Terms of Service apply.

$

Do not fill in this field:

This site is protected by reCAPTCHA and the Google Privacy Policy and Terms of Service apply.

ExploreMore Like This