Radon Mitigation in Pill Hill, Rochester MN

Radon work in Pill Hill, done by people who know the basements.

Pill Hill Historic Landmark District, southwest of downtown Rochester

Pill Hill homes weren't built to a pattern, so we don't walk into one with a pattern in mind either. Each house got designed for the family that was going to live in it, and a hundred years later the basement of every one still tells you something different.

Aerial view of the Pill Hill Historic Landmark District in Rochester, Minnesota, with downtown and the Mayo Clinic skyline in the background at sunset.

A neighborhood under landmark protection

There are around 130 contributing homes on the hill, most of them designed by architects like Harold Crawford, Ellerbe and Associates, and Edwin Lundie for Mayo physicians during the first three decades of the 1900s. The neighborhood has been on the National Register since 1990, and in February of 2025 the city council approved a local landmark district that adds another layer of protection.

The local designation matters more day-to-day than the National Register does. Anything that touches the exterior of a Pill Hill home now goes through the Heritage Preservation Commission before it gets built, which is something to know going in for any kind of project.

The foundations are their own conversation. A stone or brick basement wall from 1918 isn't sealed the way a poured wall from 2018 is, which means every house on the hill brings its own set of questions.

Pill Hill at a glance

Pill Hill Historic Landmark District, southwest of downtown Rochester.

Era
Most construction between 1903 and 1937
Foundations
Stone and brick walls, mortar that has had a century to settle, old cisterns and coal rooms tucked into corners, and slabs that often got poured in sections decades apart from each other.
On the National Register since
1990
Local landmark district since
February 2025
Foundation walls
Stone, brick, mixed-era slabs
Rochester median radon
3.2 pCi/L Citywide. Tracts range 2.2–5.3 pCi/L. By-tract view.
Olmsted Co. ≥ 4 pCi/L
42.3% of tested homes MDH, 2014–2023
How a Pill Hill conversation goes

Three steps. On your timeline.

01 / Test

Measure your radon level.

We start with a measurement of what is actually in the air your family breathes. You see the result we see, and we walk through what it means in plain language.

02 / Decide

You see the picture first.

Once you have the result, we talk through what your home is dealing with. No scripts, no pressure. You decide what to do next on your own timeline.

03 / Plan the work

A conversation about your home.

If you want to take action, we look at the basement together and talk through what a plan for your foundation could look like. Every home is its own conversation.

The first step

Find out your radon levels with a free radon test.

About 42% of tested Olmsted County homes come back above the EPA action level. The surrounding counties are higher. The first step is knowing where yours sits, and that is the part we do for free.

Call (507) 419-3394 Free test