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5 Beds
3 Baths
2,300 sqft

$59,000

508 S Jefferson Street, Armington IL, 61721

Price per sqft$25.65
Built in1977
Property size2,300 sqft
Property typeResidential
Listed by Tracy Lockenour with HomeSmart Realty Group Illinois 309-222-1792

Overview

Active

Listed Sep 24, 2026

Updated 8 days ago

Built in 1977 by Andy "Caveman" Davis to combat rising energy costs, this original earth-sheltered home in Armington offers over 2,300 square feet of highly efficient underground living space. Integrating directly into the landscape with an undulating concrete exterior and bermed roofline, the home was engineered for natural climate control long before modern eco-building trends. Inside, the property features a distinctive architectural aesthetic with ceilings and arched corridors covered in river rock, which the Davis family hand-collected during annual trips to Colorado. Currently presenting as a massive blank slate, the structural footprint provides the framework to finalize a 5-bedroom, 2.5-bathroom layout. For those evaluating multi-family utility or looking to add a unique asset to a rental portfolio, the property is already equipped with two separate electric meters, streamlining a potential duplex conversion. Whether restored as a unique cave house - single-family residence, an income-producing Airbnb, or a multi-unit property, the opportunities are endless. The sale includes two brand-new, uninstalled Argon gas circular windows (a $15,000 value) for the new buyers to replace the old windows down the road.

$393/mo

Est. mortgage payment based on a $59,000 home price.

All estimates are provided by Luxury Presence for informational purposes only. Actual amounts may vary.

Additional information

MLS® ID
12767551

Interior Features

Bedrooms
5
Bathrooms
3
Basement
No

Exterior Features

Lot Size
0.33 Acres

Other Property Details

Taxes
$1,857
Tax Frequency
Annually
MLS provider logo

Listed by Tracy Lockenour with HomeSmart Realty Group Illinois 309-222-1792

The data relating to real estate for sale on this website comes in part from the Broker ReciprocitySM Program of Midwest Real Estate Data. Real estate listings held by brokerage firms other than The Tamara OConnor Team are marked with the Broker ReciprocitySM logo or the Broker ReciprocitySM thumbnail logo (a little black house) and detailed information about them includes the name of the listing brokers.

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Data is refreshed every 3 hours. Listing last updated 4:03 AM UTC on 10/2/2026. 

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