Nestwell is a new home health platform on a mission to make environmental testing accessible

Americans spend roughly 90% of their time indoors, but most have no idea what’s actually in the air they breathe or the water they drink at home. Nestwell, a new home health system founded by Ben Parens, is trying to change that.

The platform assigns a health score to any US home from 0 to 100 based on environmental risk factors, drawing on a proprietary database covering 158 million properties. It evaluates six categories: water quality, air quality, soil contamination, radiation levels, mold and moisture, and property history.

How it works

The process starts digitally. Enter your address, answer a few questions about your home, and Nestwell cross-references your information with environmental data from certified labs and its own database to generate a score and a prioritized action plan. From there, the platform has two additional layers:

Testing. Users can purchase at-home kits for specific concerns like PFAS, mold, dust, or asbestos to move from general data to the specific reality of their home.

Marketplace. Based on your results, Nestwell recommends products like water filters, air purifiers, and non-toxic home goods, with member discounts up to 25%.

Memberships start at $14.99 per month or $149 per year. A free tier includes one basic report.

The Nestwell platform assigns your home a health score.

What’s behind it

The platform was built partly in response to a gap Parens saw during the 2025 LA fires, when residents had no centralized way to assess whether their homes were safe to live in. But the problem is much older than that. Home inspections can run upwards of $10,000, and one in five homebuyers now skip them entirely. Nestwell, developed with input from physicians at Stanford and UCSF, is trying to make that kind of information available for the cost of a streaming subscription.

Where to sign up

Nestwell is currently accepting waitlist signups at gonestwell.com. Founding members get 30% off their first year.