Welcome

Since 1946 · Family Owned

Good neighbors first. Plumbers second.

When Marvin Wolff opened the doors in 1946, he had a simple rule — treat every customer like family, and every community like home. Three generations later, that rule still drives everything we do, from the service trucks on the road to the causes we stand behind.

78+

Years serving the Black Hills

30+

Teams & non-profits sponsored yearly

$25k+

Donated in services & supplies annually

1946

Family owned, three generations strong

What We Support

Causes close to our hearts

Youth Sports Sponsorships

From Little League dugouts to high-school scoreboards, we sponsor teams across Rapid City, Spearfish and the surrounding Hills — because the kids on those fields are the next generation of Black Hills neighbors.

Community Food Drives

Every fall and winter our team partners with local pantries and fire halls to collect, sort and deliver food to families who need a hand. Drop-offs are welcome at our shop year-round.

Seniors & Veterans Assist Program

Older homeowners and veterans on fixed incomes can apply for discounted — and in some cases donated — water heater, furnace and emergency plumbing repairs through our Wolff’s Cares program.

Trade Education & Apprenticeships

We mentor students at area high schools and technical colleges, host shop tours and hire apprentices each year — investing in the skilled trades the Black Hills will rely on for decades to come.

Get Involved

Know a family or organization that
could use a hand?

We review nominations for sponsorships, Wolff’s Cares repairs and community partnerships year-round. Tell us about your cause — we’d love to help.