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Tulsa, OK · zoning record

RM-3 zoning in Tulsa.

The dimensional standards that govern what you can build in the RM-3 district, straight from Tulsa's ordinance, with every figure quoting its source. Check a specific address to see how these rules apply to a real lot.

Free · Every figure cited · Read from the current code (2026-10-02)

RM-3 dimensional standards.

These are the letter-of-the-law limits for the base RM-3 district. Overlays (historic, neighborhood plan, and similar) can tighten them; a specific address check resolves the overlays that actually apply.

Minimum lot size

5,500 sf

Smallest conforming lot. This is the rule for a detached house; the code sets other values below.

“Detached house 22,500 13,500 9,000 6,900 5,500 3,300 5,500 5,500 5,500 5,500 5,500 5,500 5,500”Table 5-3: R District Lot and Building Regulations › Minimum Lot Area (sq. ft.) › Detached house › RM-3 column · Tulsa code · read 2026-10-02
Other values, by what you build · 8
  • Patio house5,500 sf
    “Patio house – – – 6,900 5,500 3,300 5,500 5,500 5,500 5,500 5,500 5,500”Table 5-3: R District Lot and Building Regulations › Minimum Lot Area (sq. ft.) › Patio house › RM-3 column · Tulsa code
  • Townhouse1,600 sf
    “Townhouse – – – 4,500 4,500 2,200 2,750 1,600 1,600 1,600 1,600 1,600”Table 5-3: R District Lot and Building Regulations › Minimum Lot Area (sq. ft.) › Townhouse › RM-3 column · Tulsa code
  • Cottage house development10,000 sf
    “Cottage house development – – – – – 10,000 10,000 10,000 10,000 10,000 10,000 10,000”Table 5-3: R District Lot and Building Regulations › Minimum Lot Area (sq. ft.) › Cottage house development › RM-3 column · Tulsa code
  • Duplex5,500 sf
    “Duplex – – – 6,900 5,500 3,300 5,500 5,500 5,500 5,500 5,500 5,500”Table 5-3: R District Lot and Building Regulations › Minimum Lot Area (sq. ft.) › Duplex › RM-3 column · Tulsa code
  • Multi-unit house5,500 sf
    “Multi-unit house – – – – – 3,300 6,900 5,500 5,500 5,500 5,500 5,500”Table 5-3: R District Lot and Building Regulations › Minimum Lot Area (sq. ft.) › Multi-unit house › RM-3 column · Tulsa code
  • Apartment/Condo24,000 sf
    “Apartment/Condo – – – – – – – – 10,000 10,000 6,000 24,000”Table 5-3: R District Lot and Building Regulations › Minimum Lot Area (sq. ft.) › Apartment/Condo › RM-3 column · Tulsa code
  • Other allowed buildings/uses › Permitted by right5,500 sf
    “Permitted by right 22,500 13,500 9,000 6,900 5,500 5,500 5,500 5,500 5,500 5,500 5,500 5,500 5,500”Table 5-3: R District Lot and Building Regulations › Minimum Lot Area (sq. ft.) › Other allowed buildings/uses › Permitted by right › RM-3 column · Tulsa code
  • Other allowed buildings/uses › Special exceptions12,000 sf
    “Special exceptions 22,500 13,500 12,000 12,000 12,000 12,000 12,000 12,000 12,000 12,000 12,000 12,000 12,000”Table 5-3: R District Lot and Building Regulations › Minimum Lot Area (sq. ft.) › Other allowed buildings/uses › Special exceptions › RM-3 column · Tulsa code

Minimum lot width

50 ft

Narrowest conforming lot. This is the rule for a detached house; the code sets other values below.

“Detached house 150 100 75 60 50 30 50 50 50 50 50 50”Table 5-3: R District Lot and Building Regulations › Minimum Lot Width (ft.) › Detached house › RM-3 column · Tulsa code · read 2026-10-02
Other values, by what you build · 8
  • Patio house50 ft
    “Patio house – – – 60 50 30 50 50 50 50 50 50”Table 5-3: R District Lot and Building Regulations › Minimum Lot Width (ft.) › Patio house › RM-3 column · Tulsa code
  • Townhouse20 ft
    “Townhouse – – – 30 25 20 25 20 20 20 20 20”Table 5-3: R District Lot and Building Regulations › Minimum Lot Width (ft.) › Townhouse › RM-3 column · Tulsa code
  • Cottage house development75 ft
    “Cottage house development – – – – – 75 75 75 75 75 75 75”Table 5-3: R District Lot and Building Regulations › Minimum Lot Width (ft.) › Cottage house development › RM-3 column · Tulsa code
  • Duplex50 ft
    “Duplex – – – 60 50 30 50 50 50 50 50 50”Table 5-3: R District Lot and Building Regulations › Minimum Lot Width (ft.) › Duplex › RM-3 column · Tulsa code
  • Multi-unit house50 ft
    “Multi-unit house – – – – – 30 50 50 50 50 50 50”Table 5-3: R District Lot and Building Regulations › Minimum Lot Width (ft.) › Multi-unit house › RM-3 column · Tulsa code
  • Apartment/Condo100 ft
    “Apartment/Condo – – – – – – – – 100 100 50 100”Table 5-3: R District Lot and Building Regulations › Minimum Lot Width (ft.) › Apartment/Condo › RM-3 column · Tulsa code
  • Other allowed buildings/uses › Permitted by right50 ft
    “Permitted by right 150 100 75 60 50 50 50 50 50 50 50 50 50”Table 5-3: R District Lot and Building Regulations › Minimum Lot Width (ft.) › Other allowed buildings/uses › Permitted by right › RM-3 column · Tulsa code
  • Other allowed buildings/uses › Special exceptions100 ft
    “Special exceptions 150 100 100 100 100 100 100 100 100 100 100 100 100”Table 5-3: R District Lot and Building Regulations › Minimum Lot Width (ft.) › Other allowed buildings/uses › Special exceptions › RM-3 column · Tulsa code

Minimum street frontage

30 ft

Lot length that must touch a street.

“Residential bldgs/uses [2] 30 30 30 30 30 30 30 30 30 30 30 30 30”Table 5-3: R District Lot and Building Regulations › Minimum Street Frontage › Residential bldgs/uses › RM-3 column; note [2]: Minimum street frontage requirements apply to townhouse developments, not to individual townhouse units. Cottage house developments require minimum street frontage of 75 feet. Minimum street frontage requirements do not apply to nonresidential uses. · Tulsa code · read 2026-10-02

Front setback

10 ft

Required space from the front line. This is the rule on most streets; the code sets other values below.

“Other streets 35 35 30 25 20 20 25 10 10 10 10 10 25”Table 5-3: R District Lot and Building Regulations › Min. Building Setbacks (ft.) › Street › Other streets › RM-3 column; along streets other than arterials and freeway service roads; note [3]: For detached houses and duplexes on corner lots, the minimum side street setback may be reduced to 15 feet, provided that the minimum setback for street-facing garage doors is 20 feet or 20 feet from the back of the sidewalk, whichever is greater. The street setback specified in Table 5-3 applies along the other street. · Tulsa code · read 2026-10-02
Other values, by street · 1
  • Arterial or fwy service rd.10 ft
    “Arterial or fwy service rd. 35 35 35 35 35 35 35 35 10 10 10 10 35”Table 5-3: R District Lot and Building Regulations › Min. Building Setbacks (ft.) › Street › Arterial or fwy service rd. › RM-3 column; note [3]: For detached houses and duplexes on corner lots, the minimum side street setback may be reduced to 15 feet, provided that the minimum setback for street-facing garage doors is 20 feet or 20 feet from the back of the sidewalk, whichever is greater. The street setback specified in Table 5-3 applies along the other street. · Tulsa code

Rear setback

20 ft

Required space from the rear line.

“Rear [4] 25 25 25 20 20 20 20 20 20 20 10 20 15”Table 5-3: R District Lot and Building Regulations › Min. Building Setbacks (ft.) › Rear › RM-3 column; note [4]: Non-residential uses requiring special exception approval in R zoning districts, excluding Day Cares, require minimum 25-foot building setback from R-zoned lots that are vacant or occupied by residential uses. Day Cares are not subject to the 25-foot building setback. · Tulsa code · read 2026-10-02

Permitted uses in RM-3

  • single-familyby-right
  • two-familyby-right
  • townhouseby-right
  • multi-familyby-right

Sources

Every figure above is quoted verbatim from the current ordinance. We never substitute a typical-for-zone default: a field absent from the record shows nothing, not a guess.

Informational only — not a permit, appraisal, or professional engineering opinion. Verify with your local planning department before acting on it. See Terms and data sources.

Other Tulsa districts on record.

RERS-1RS-2RS-3RS-4RS-5RDRTRM-0RM-1RM-2RMHOHOLOMOMHCSCGILIMIHCHCBD

Check a real Tulsa lot against RM-3.

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