Where a patio slab is allowed to sit on a Tulsa lot

Field note, published October 18, 2026. Every source below was read that day.

Two questions, two different counters

A back-yard slab raises one question at the Tulsa Planning Office and a second at the Permit Center. The zoning code answers where concrete and anything standing on it may sit relative to your lot lines. The building side answers whether an application, a plan set and an inspection apply before the trucks come. A project can satisfy one and fail the other, which is why the useful order is lot lines first, paperwork second, finish and color last.

Both answers turn on two measurements almost nobody takes before calling a contractor: the height of the finished surface above the ground beside it, and whether anything above it has a roof.

The 30-inch line in the zoning code

Section 90.090-C of the Tulsa Zoning Code, amended and effective October 21, 2025, states that setbacks in R zoning districts must be unobstructed and unoccupied from the ground to the sky except as indicated in its Table 90-1. That table then lists what is allowed in anyway, and one row is the one a patio lives on: decks, patios, and other features and structures less than 30 inches in height above grade are permitted in the street, side and rear setbacks alike. Retrieved October 18, 2026.

So a slab poured close to the ground is one of the few things the code lets you place inside a required setback, front yard included. That single row is why a patio can run to within a few feet of a fence line while the garage it sits beside cannot.

The same table is where plans quietly come apart, because the things people put on a finished patio sit on rows of their own. Swimming pools and tennis courts are allowed in a rear setback only, with a note that they may be permitted in a street setback that falls within a rear yard. Barbeque pits and outdoor fireplaces are a rear setback row as well. So are swing sets and other recreational equipment. Air conditioning units may occupy side and rear setbacks but not a street setback. Arbors, trellises, plants and cold frames are allowed everywhere.

Height is measured above grade, which matters on the sloping lots around Tulsa's creek valleys. A terrace that steps out from a floor level can pass 30 inches at its low corner and leave that row entirely, and then it answers to building setbacks instead.

The setback numbers themselves

Table 5-3 of the same code carries the minimum building setbacks district by district. These are the distances a roofed patio has to respect, and the ones your surveyor's pins are measured against.

Minimum building setbacks in Tulsa's single-family districts, from Table 5-3 of the zoning code, retrieved October 18, 2026. The street column is for non-arterial streets.

District	Street	Side	Rear
RE	35 ft	15 ft	25 ft
RS-1	35 ft	5 ft	25 ft
RS-2	30 ft	5 ft	25 ft
RS-3	25 ft	5 ft	20 ft
RS-4	20 ft	5 ft	20 ft
RS-5	20 ft	5 ft	20 ft

On an arterial street or a freeway service road the street setback is 35 feet in every one of those districts. A corner lot gets one concession: for detached houses and duplexes the minimum side street setback may be reduced to 15 feet, provided a street-facing garage door is held 20 feet back, or 20 feet from the back of the sidewalk, whichever distance is greater. The maximum building height in all of them is 35 feet.

A roof changes the category

Section 90.120 of the code is short and decides a great deal. Building coverage is the total area of a lot covered by principal and accessory buildings, only building areas beneath a roof are counted, and the section says plainly that a porch with a roof is counted while an uncovered deck structure is not. Cover the slab and it joins the arithmetic of coverage; leave it open to the sky and it never does.

Covering it also moves the slab onto the accessory building rows. Table 90-1 keeps accessory buildings out of street and side setbacks and allows them in the rear. Section 90.090-C.2 then limits one in a rear setback to a single story and 18 feet in height, no more than 10 feet to the top of the top plate, holds it at least 3 feet off every interior lot line, and caps how much of the rear setback it may cover under Table 90-2: 30 percent in RE and RS-1, 35 percent in RS-2, and 40 percent in RS-3, RS-4, RS-5, RD, RT and RM. Where a lot line abuts street right-of-way, the same setback that applies to the house applies to the accessory building.

There is a floor area ceiling too. Section 45.030-A holds the total aggregate floor area of all detached accessory buildings that are not an integral part of the house to 750 square feet or 40 percent of the house's floor area, whichever is greater, in RE and RS-1, and to 500 square feet or 40 percent in RS-2 through RM. A roofed patio, a shed and a detached garage all draw on that one allowance.

Required open space, and the surprise about driveways

Tulsa's R districts do not publish a maximum lot coverage percentage. They publish a minimum instead: Table 5-3 requires open space per dwelling unit of 12,000 square feet in RE, 7,000 in RS-1, 5,000 in RS-2, 4,000 in RS-3, 2,500 in RS-4 and 600 in RS-5, with a duplex in RS-3 at 2,500 per unit.

Section 90.080-B says what may be counted toward it: outdoor areas that are not occupied by buildings, driveways or parking areas and are generally useable by residents, plus driveways and parking areas located in the rear yard of a detached house or duplex, plus a green roof covering a quarter or more of the building's roof area. An uncovered patio is none of the excluded three, so it still counts as open space. A new parking pad in the front yard does not. The counterintuitive result is that paving the back for a patio costs a tight lot nothing on this test, while widening out front can.

Paving in front for parking carries its own rules on width and surface, which the driveway permit note works through along with the right-of-way permit for anything past the property line.

Which permit, if any

The City's Residential Building Guidelines, the Development Services pamphlet dated 1/1/2025, is the document that answers the paperwork half. It gives carports, covered patios and porches their own page, applied for as a Building: Accessory Structure permit, and asks for a site plan with the legal description from the deed, a structural cross-section, foundation plans, elevation plans, a grading and drainage plan and an erosion control plan. Retrieved October 18, 2026.

Its accessory buildings page carries the exemption people have usually half heard about: a footing or building permit is not required for a one-story detached accessory structure provided the floor area does not exceed 200 square feet and it is separated from other structures by a minimum distance of five feet including projections, and a zoning clearance permit is required even then. A zoning clearance permit, the pamphlet explains elsewhere, exists to confirm that what you plan meets the zoning requirements, and it allows no occupancy, construction or expansion by itself.

An uncovered slab is not on the pamphlet's list of project types at all, and that absence is not an answer. The guidelines open by telling readers to contact the Building Permit Center for more information about obtaining a permit, or whether one is required, at (918) 596-9456. The City's permitting page, retrieved October 18, 2026, puts that counter at 175 E. 2nd Street on the fourth floor, open Monday through Friday from 8 a.m. to 4 p.m., with applications filed through its self-service portal. One phone call settles it for your address, and no web page can.

Two structures that often arrive with a patio have thresholds worth knowing before the design is fixed. Fences and walls not over seven feet tall take a zoning clearance only permit, and over seven feet a building permit. A retaining wall measured from the bottom of its footing to the top of the wall takes a zoning clearance only permit up to four feet, and above four feet a building permit plus a design sealed by an engineer licensed in the State of Oklahoma. On a stepped back yard, that wall is often the real permit in the project.

What the application costs, and the clocks on it

The pamphlet sets out how the money works rather than quoting a figure. The application fee is due when you apply, it is based on the declared valuation, it is set forth in Title 49, chapter 3, section 301, it is non-refundable, and it is deducted from the total building permit fee due at issuance. Declared valuation is the applicant's own estimate of construction cost, should cover the structure only, and excludes cosmetic items and the separate licensed trade permits. So the number you declare picks your fee tier: ask the Permit Center which tier your slab lands in before filing.

Two 180-day clocks then run. An application is deemed abandoned 180 days after filing unless it has been pursued in good faith or a permit has issued, and a permit becomes invalid if the work is not started within 180 days of issuance or is suspended for 180 days, with extensions available in writing. Our index of published Tulsa figures keeps the right-of-way fees and bonds beside this one.

The drainage plan nobody expects on a patio

The guidelines put the grading and drainage requirement far wider than new houses: it applies to any development, redevelopment, building, excavating, grading, regrading, paving, land filling, berming or diking of any property within the City. Paving is in that list by name.

The substance behind it is the part a neighbor will eventually quote at you. All residential properties must accept and convey drainage without causing damage to adjoining properties. Flow coming from off-site onto the property cannot be blocked. Any additional flow originating on the property must be collected and conveyed to the street if possible, or to another approved drainage conveyance facility. A slab in the wrong place does all three wrong things at once, and a plan sheet is cheaper than the conversation afterwards. The published slopes for getting water away from a house sit in the drainage and runoff note.

One threshold saves most homeowners a report: a separate Storm Water Pollution Prevention Plan is required for any development disturbing over one acre, which the pamphlet spells out as 43,560 square feet, under the state's General OKR10 Permit. A back-yard patio is nowhere near that. A patio plus a long new drive plus a stripped work area on a large lot can reach it.

Easements, manholes and the affidavit

Every building permit application carries a certification, and its second half is an affidavit as to easements, dedications and rights-of-way. The pamphlet requires that half for any new construction that would alter the existing site, naming a new residence, a room addition, a swimming pool and covered patios, and states its purpose bluntly: to prevent buildings and structures from being built on easements and rights-of-way.

That is also why the site plan has to label and dimension all property lines, right of way, easements and setbacks, and show and dimension the driveway approach, the driveway on the lot and any required sidewalks. Two further lines matter where a slab is concerned. Plans have to identify sanitary sewer manholes on the property with measurements from the two nearest property lines, and manhole lids and covers are to remain uncovered and visible at all times. A patio that buries a manhole will be found, and the finding usually involves a saw.

On a lot with a septic system the pamphlet's Exhibit 1 asks the site plan to show structures such as swimming pools, tennis courts, gazebos, driveways and patios, along with the septic components and lateral lines, and routes the septic permit itself through the Tulsa City/County Health Department. Paving over a lateral field is a repair nobody wants to price.

Floodplain lots

If any part of the lot sits in a regulatory floodplain, the City's flood control pages state that a floodplain watershed development permit must be obtained from the City of Tulsa before commencing construction, landfill or excavation in the floodplain, and that new buildings there must be elevated at least one foot above the Tulsa Regulatory Floodplain elevation. Retrieved October 18, 2026. Patio grading is both construction and excavation, so the permit question comes before the forms.

Four facts to establish before anyone draws

1. Your zoning district. RS-3 and RS-5 give different setbacks and different open space. The Tulsa Planning Office's property information page, retrieved October 18, 2026, points to the City zoning map and the City floodplains map.
2. The three setback distances for that district, from Table 5-3, plus whether your street is an arterial.
3. Every easement on the lot, and where the sanitary sewer manhole is, measured from two property lines.
4. Floodplain status, from the City floodplains map, before any grading is designed.

With those four written down, a contractor's visit becomes a conversation about base, thickness and finish instead of guesswork about lot lines. The patio guide covers the slab itself, the removal note covers where an old one may go, and the quote form puts your measurements in front of an independent local contractor.

Official sources

• Tulsa Zoning Code, amended and effective October 21, 2025 (Table 5-3, sections 45.030, 90.080, 90.090 with Tables 90-1 and 90-2, and 90.120)
• City of Tulsa Residential Building Guidelines, Development Services Department, dated 1/1/2025
• City of Tulsa, Permit Center and self-service portal
• City of Tulsa Water and Sewer, flood control and watershed development permits
• Tulsa Planning Office, property information, zoning and floodplain maps