Commission declines text amendment to shrink R‑2 minimum lot size aimed at allowing duplex infill

The Joplin Zoning and Planning Commission on March 9 rejected a proposed text amendment that would reduce minimum lot size in the R‑2 district to 6,000 square feet to enable duplex-style infill in certain neighborhoods.

Dustin Melius of TMC Home Services and Pro X said the change would allow development of duplexes on existing R‑2 lots that are too small under current size requirements, increasing housing supply and reducing per-unit construction costs. “It will increase housing supply,” Melius said, adding the developer’s new three‑bed, two‑bath units would likely rent in the $1,212.50 range.

City staff and the commission clarified the amendment would not broadly permit suburban-style duplexes at the smaller size; staff said the code differentiates suburban-style duplexes and multi‑unit homes and that the change is meant for infill contexts where the surrounding neighborhood already includes similar housing types. Commissioners questioned whether the adjustment should instead be handled case by case through planned developments and raised concerns about neighborhood compatibility, visual fit and whether reduced lot depth would push density in historically single‑family areas.

After discussion the commission voted on a motion to approve the text amendment; the chair called for a hand count after voice votes appeared mixed. The motion did not carry.

Because the commission is advisory, proponents may still seek relief through other city processes or present a revised amendment to council.