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Columbia, MO Zoning Overlays & Bonuses: Downtown Design Guide (2026)

Significant Restrictions
Compiled from the official code textEditor Martyn O'NeillLast verified September 2026

Key Facts

District name
M-DT mixed-use downtown
Core tools
Regulating plan plus form standards
Regulating plan adopted
March 20, 2017
Governing law
UDC § 29-4.2

Summary

Columbia, Missouri regulates its downtown through the M-DT district's form-based code, controlling building placement, façades, and street-space design instead of typical use-based zoning, under Boone County's Unified Development Code Section 29-4.2.

The M-DT district is to encourage a mixed-use, pedestrian-oriented district - with a secondary focus on land uses. Property frontages and façades are part of the public realm, literally forming the walls of the street-space and are therefore subject to more regulation than the other portions of the private property. The principal regulatory sections of the M-DT district are the regulating plan, the building form standards, and the urban space standards, described below:

(a) Purpose and intent.

(1) The regulating plan. The regulating plan applies M-DT regulations to individual properties in the district. It is public space master plan with specific information on development parameters for each parcel and shows how each lot relates to the street-space and the surrounding neighborhood. The regulating plan also identifies additional regulations and/or opportunities for lots in specific locations, as well as place-specific exceptions to the building form standards.

(2) The building form standards. The building form standards (BFS) are coded street frontages. They establish basic parameters governing building form for different locations shown on the regulating plan in order to shape the street-space through the site and form controls on buildings. Their secondary intent is to ensure that the buildings are coordinated to form a functioning, sustainable, block structure throughout the district. They describe the buildable

View official code

Official source re-checked September 7, 2026: no newer edition of the code had been published (publisher’s edition: Code of Ordinances: Supplement 138).

Full Breakdown

Section 29-4.2 of Columbia's Unified Development Code establishes the M-DT (mixed-use downtown) district's form-based controls: a regulating plan that assigns a building form standard to every downtown parcel, building form standards governing height, siting, and required building lines, and urban space standards for the street-space itself. Because façades form what the code calls 'the walls of the street-space,' downtown building placement and design face more regulation than standard zoning districts elsewhere in the city. The regulating plan, dated March 20, 2017, is kept on file with the Community Development Department and changes only through a formal amendment process.

Violations & Fines

Building in the M-DT district out of compliance with the regulating plan or building form standards is a Chapter 29 violation; the city can refuse permits, issue a stop-work order, or pursue misdemeanor penalties under Section 29-6.6.

Frequently Asked Questions

What is the M-DT district in Columbia, Missouri?
It's the city's downtown zoning district, regulated under UDC Section 29-4.2 by a form-based code: a regulating plan and building form standards controlling building placement and façade design instead of standard use-based zoning.
Where can I see Columbia's downtown regulating plan?
The regulating plan, dated March 20, 2017, is kept on file with Columbia's Community Development Department and shown on the official zoning map, per UDC Section 29-4.2(c).

Sources & Official References

Other rules in Columbia

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