Window and Glass Replacement Business
Buy replacement windows wholesale for around $150 each and sell with installation for $500-$1,000 per window. Market through door-to-door flyer distribution targeting neighborhoods with older homes. High margins with relatively simple installation skills required.
Startup Budget
$2K – $10K
Difficulty
Intermediate
Business Type
Offline
Location
Suburban
Time Commitment
Full-time
Revenue Potential
$5K-$20K/month with 200-500% markups per window
Skills Needed
Watch the Full Breakdown
Watch on YouTube — Chris Koerner
Related Offline Intermediate Ideas
Wholesale Snack Distribution
Distribute snacks, jerky, candy, chips, and sodas to gas stations, convenience stores, and gift shops as a wholesale distributor. No vending machine needed. Highly scalable.
$5k-20k/month
Insulation Removal & Reinstallation
Remove old cellulose insulation from attics, seal air leaks, and reinstall blown fiberglass insulation (R49+). Average ticket is $10,000 for a 2,000 sq ft home with 52% gross margins and 15-20% net. Can be fully subcontracted with no equipment needed.
$50k-100k+/month
Duct Sealing (Aeroseal)
Seal leaky ductwork using Aeroseal technology, which pressurizes the duct system and sends sealant particles to automatically seal holes and cracks. Can be sold standalone or bundled with insulation services. Third biggest revenue driver mentioned, contributing to over $1M/year.
$30k-80k/month
Home Performance Business (Full Suite)
Comprehensive home energy and air quality business combining insulation, duct sealing, duct cleaning, air scrubbers, and HVAC upsells. Uses a subcontractor model requiring no tools or crew of your own, with Facebook ads driving free attic inspection leads. Can generate over $1M/year net profit in one metro area.
$80k-200k+/month