Ontario, Oregon Building Permit Guide

The City of Ontario’s Building Division reviews plans and issues and inspects structural and mechanical permits inside the city; every electrical and plumbing permit for an Ontario address is issued and inspected by the Malheur County Building Department. Contractors can apply and check permit status in Oregon ePermitting, and paper forms go back to the division at City Hall. Under the 2026–27 Master Fee Schedule, Resolution 2026-109, in force since July 1, 2026, a house permit starts at $40 and plan review adds 65%.

The division is at Ontario City Hall, 444 SW 4th Street (541-881-3224; fax 541-881-3251), open Monday to Friday from 8:30 a.m. to 4:30 p.m. Eddie Alvarez is the Building Official; he enforces the state codes and the City’s related ordinances, coordinates building activity with other City divisions and collects the fees. Ontario, in Malheur County, had 11,957 residents in the Census estimate for 2025.

City permits apply inside Ontario’s limits. On unincorporated land outside them, Malheur County’s Building Department in Ontario issues every permit type, and the County’s Planning and Zoning office in Vale handles zoning.

What requires a building permit in Ontario?

Ontario’s fee resolution lists what the division permits: new buildings, additions, alterations and other work on existing residential and commercial buildings, manufactured home set-ups, park development, standalone residential fire sprinklers, commercial sprinklers and alarms, solar arrays and demolition. It adds that where the state code calls for a structural permit for a retaining wall, deck, fence or accessory structure, the valuation table applies.

What Ontario decides and what the state holds

The exemptions are the state’s, in sections R105.2 and R101.2.2 of the 2026 Oregon Residential Specialty Code, which became mandatory on October 1, 2026. Ontario sets its own building fees by Council resolution, its Planning and Zoning Development Standards, flood hazard rules and system development charges. Work that needs no building permit can still need the City’s development application, which the Planning Department uses for site development and for any work in a special flood hazard area.

Oregon’s building code and its exemptions are the same in Ontario as everywhere in the state, and an exemption from the building permit is not an exemption from zoning, land use or a trade permit. Site snow, wind and seismic values come from the state’s Oregon Design Criteria Hub. How Oregon’s statewide code works

Ontario building department: who handles permitting

The split by trade is set out in three official sources that agree: BCD’s directory says Ontario provides structural and mechanical permits and that electrical and plumbing permits are issued by Malheur County; the City’s fee resolution says electrical and plumbing permits are “issued and inspected by Malheur County Building Department”; and the County’s department says its service inside Ontario is limited to plumbing and electrical. Planning and the Building Division share the same City Hall phone number. On September 22, 2026 the City Council adopted Resolution 2026-123, adding $5,000 for building inspection contract services; the staff report notes that the division has one Building Official and that the City has contracted with the state Department of Consumer and Business Services as needed.

Permit types

Residential permits

House projects use the City’s structural permit form and, for heating and cooling, its mechanical form, with electrical and plumbing permits bought separately from the County. The residential plan review checklist starts with outside approvals, planning and zoning, the water district, erosion control and DEQ, septic or sewer approval, then asks for a site plan showing distances to lot lines, two complete sets of construction documents with the site-specific design criteria, a foundation plan with posts, hold-downs and vents, and floor plans that show smoke and carbon monoxide alarms, equipment, fixtures and any balcony or deck over 30 inches. A manufactured home set-up costs $175 for a single-wide, $275 for a double-wide and $375 for a triple-wide, plus the $30 state fee, and covers a prescriptive foundation, the feeder and plumbing connections and up to 30 feet of site utilities.

Building or remodeling a home here? Alliance handles residential permit expediting, so the crew isn't waiting on the counter.

Commercial permits

Commercial work has its own valuation table, a $76 minimum and separate structural and mechanical plan review checklists. Plan review is 65% of the building permit fee and fire and life safety review 40%, both in addition to the permit fee; commercial mechanical permits are priced on the commercial table, with 40% plan review. Deferred submittals pay 65% of the fee on the deferred value, at least $118.75, and phased projects $225 plus 10% of the total building permit fee, up to $1,500 a phase. Sprinkler and alarm systems are priced on the commercial table with plan review on top, solar arrays outside the prescriptive path are valued on the panels, racking and labor but not the collectors or inverters, and a temporary certificate of occupancy costs $95 for each 30 days, up to 180 days.

For tenant improvements and new commercial builds, Alliance handles commercial permit applications through issuance. More on this: commercial building permits explained.

What comes before the building permit

Zoning and land use go through the City’s Planning Department, whose fee schedule lists site development review at $60, a residential floodplain development permit at $100 for a house and $50 for an accessory building ($200 and $100 for commercial), an administrative variance at $60, a conditional use permit at $195 and a partition at $421. Ontario’s flood insurance rate map has not changed since its first edition of April 17, 1984, according to FEMA’s status book, which places the city among participating National Flood Insurance Program communities. System development charges are paid before a permit to connect: there are currently no water or sewer SDCs for residential connections, and the transportation SDC for a single-family house is $1,288 under the brochure updated July 11, 2024. The charges, created by Ordinance 2618-2008, fund the water, wastewater and street systems and apply both inside the city and in the urbanizing area that connects to them. Public Works takes separate residential and commercial SDC permit applications, and an appeal form is available for disputed charges.

Ontario permit costs and fees

Building fees are in the 2026–27 Master Fee Schedule, Resolution 2026-109, which the City Council adopted after a public hearing on February 24, 2026 and which took effect on July 1, 2026; its building section repeats the tables of Resolution 2024-114, in force since November 18, 2024. Valuation uses the ICC table current each April 1. The schedule lists the surcharge as a “State Surcharge Fee 12% of Building Permit fee or current state rate,” charged in addition to the building fees, and the same wording for mechanical permits; demolition permits carry no state surcharge.

Worked example. A house valued at $150,000 is in the $100,001 to $500,000 residential band: $463 plus 50 × $2.50 ($125) gives a permit fee of $588. Plan review at 65% adds $382.20 and the 12% surcharge $70.56, for $1,040.76 before the mechanical permit and the County’s electrical and plumbing permits. The same value on the commercial table would start from $879.70 plus $4.75 per $1,000.

Other charges: added plan review $60 an hour, inspections outside business hours $90 an hour with a two-hour minimum, and investigation of work begun without a permit $60 an hour plus surcharge. Standalone residential fire sprinklers cost $40 to $122 by area, plan review included. A certificate of occupancy is free; a temporary one for a house costs $50 for 30 days.

Trade permits and who may pull them

The City sells only the mechanical trade permit. Electrical and plumbing permits for Ontario addresses, and their inspections, come from the Malheur County Building Department, which takes inspection requests by email at BuildingDepartment@bldgmalheurco.org and posts its own forms and fees. A remodel that adds circuits and fixtures therefore needs a City structural permit, perhaps a City mechanical permit, and two County permits. The County’s 2025 electrical application prices a new house at $140 for the first 1,000 sq ft and $25 for each further 500 sq ft, a service of 200 amps or less at $80 and a first branch circuit without a new service at $60, then adds the 12% state surcharge and, where review is needed, 25% for plan review; both County applications expire if work does not start within 180 days.

How to apply for an Ontario building permit

Review, corrections and what causes delay

Ontario publishes no review time, so send the checklist items in full the first time. Plan review fees are not refunded once review has started. Changes after review cost $60 an hour. A permit can be extended for 180 days for $40 (residential) or $76 (commercial) if you ask before it expires; one expired up to six months is reinstated for the same amounts plus surcharge, and one expired six months to a year for half the original permit fee.

Inspections in Ontario

For structural and mechanical inspections, contact the Building Division at 541-881-3224, or use Oregon ePermitting for permits issued there; electrical and plumbing inspections are booked with Malheur County. Inspections outside business hours are scheduled at the Building Official’s discretion.

Each reinspection, and each inspection beyond the number a permit allows, costs $60. A residential temporary certificate of occupancy runs 30 days for $50; a commercial one costs $95 for each 30-day period up to 180 days in all.

Ontario permit search and official resources

The City points applicants to Oregon ePermitting to check the status of permits issued there. For older City permit files, call the Building Division; for electrical and plumbing records, contact the Malheur County Building Department, which posts monthly reports of permits issued. Ontario’s municipal code and its Planning and Zoning Development Standards are published on Municode.

• Ontario Building Division
• Building fee schedule posted by the City (Resolution 2024-114 tables)
• February 24, 2026 council minutes: Resolution 2026-109 adopted
• Structural permit application
• Mechanical permit application
• Residential structural plan review checklist
• Commercial structural plan review checklist
• Ontario Planning and Zoning
• Ontario Code of Ordinances
• Planning Department fee schedule
• Floodplain development permit application
• System development charges brochure (July 2024)
• Malheur County Building Department
• BCD Local Building Department Directory
• 2026 Oregon Residential Specialty Code, chapter 1
• Oregon ePermitting
• Oregon Construction Contractors Board

Ontario building permit FAQ

Who issues electrical and plumbing permits in Ontario?

The Malheur County Building Department (541-372-5460), which also inspects that work. The City issues structural and mechanical permits.

How much is a building permit for a house in Ontario?

At least $40. A $150,000 house pays $588, plus $382.20 for plan review and $70.56 in state surcharge.

Are there system development charges on a new house?

No water or sewer SDCs apply to residential connections at present; the transportation SDC is $1,288 per single-family house.

Can I extend a permit?

Yes, for 180 days, if you apply before it expires: $40 for a residential permit or $76 for a commercial one.

Do I need a permit to demolish a building?

Yes. It costs $50 for a house or $100 for a commercial building, with plans of the work and proof of DEQ permits, and no state surcharge.

Can I apply online?

Yes, through Oregon ePermitting, which also shows permit status; the City’s structural and mechanical forms can instead be returned to the Building Division.

Simplify Ontario permitting with Alliance Permitting

Alliance Permitting is a permit documentation and submission company in Oregon. We prepare your paperwork, file it correctly and coordinate with the permitting authority through issuance. We are not a contractor and we do not perform licensed plan review or inspections; that work stays with your licensed team and the jurisdiction.

This guide is provided by Alliance Permitting for general information about Ontario permitting. Requirements, fees, and procedures change; confirm details with the permitting authority before relying on them.