Apr 25, 2025

What is the most expensive home improvement?


What Is the Most Expensive Home Improvement?

High-Cost Renovations That Make a Big Impact in the Chicago Real Estate Market

When it comes to home improvements, not all projects are created equal—especially when it comes to cost. In the world of Chicago real estate, certain renovations can demand six-figure investments. But are they worth it?

In this guide, we explore the most expensive home improvements, what they typically cost, and whether they offer a solid return on investment.


Home Additions: Top-Tier Price Tag, High Potential Value

By far, one of the most expensive home improvements is adding square footage to your property. Whether it’s a new primary suite, sunroom, or second story, home additions can cost anywhere from $80,000 to $250,000 depending on scope and materials.

Key Considerations for Additions:

  • New foundation and structural framing

  • Plumbing, electrical, and HVAC integration

  • Interior finishes to match the existing home

According to the Remodeling 2024 Cost vs. Value Report, a primary suite addition can cost upwards of $150,000, recouping around 55-60% of its cost.


Kitchen Overhauls: Gourmet Comes at a Cost

While minor kitchen remodels are ROI favorites, major upscale kitchen renovations are among the priciest. These projects often range from $75,000 to $140,000, especially when structural changes or luxury finishes are involved.

Luxury Kitchen Upgrades:

  • Custom cabinetry and high-end stone countertops

  • Commercial-grade appliances (Sub-Zero, Wolf, etc.)

  • Layout reconfigurations or expanded floor plans

Though they’re expensive, these upgrades can significantly elevate a home’s marketability in affluent neighborhoods.


Bathroom Expansion or Addition

Adding a new bathroom or dramatically expanding an existing one is another costly project. These renovations often exceed $60,000 for upscale designs, especially when space has to be reconfigured or plumbing added.

Features That Drive Costs:

  • Radiant floor heating and spa-style bathtubs

  • Frameless showers with multiple jets

  • Designer tiles and lighting fixtures

According to the National Association of Realtors, bathroom additions remain popular but rarely recoup more than 50-60% of their cost.


Basement Finishing with Luxury Upgrades

Transforming a basement into a luxury entertainment zone or in-law suite can be both valuable and expensive. High-end basement remodels can easily top $100,000.

High-Cost Basement Upgrades:

  • Home theaters with soundproofing and projection systems

  • Custom bar areas and built-in seating

  • Guest bedroom with full bath

These spaces offer lifestyle appeal, especially for large families or multi-generational living.


Swimming Pools: High Cost, Mixed ROI

A backyard pool might boost lifestyle value, but it’s also among the most expensive and least cost-effective improvements. Installing an in-ground pool with landscaping can run $70,000–$150,000 or more.

Ongoing Costs to Factor:

  • Maintenance, heating, and water bills

  • Safety upgrades and insurance premiums

The U.S. Department of Energy recommends energy-efficient pool pumps to minimize utility costs, but ROI remains limited depending on the buyer pool.


Get Expert Advice Before You Invest

Considering a major home improvement? Make sure it aligns with your neighborhood and buyer trends. At Heart of Chicago Homes, we help you understand which investments pay off—and which don’t.

Stay updated with the latest market insights on the Heart of Chicago Homes blog.


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