In Mesa, Your Address Decides Who Sends the Utility Bill, and This Winter Every Provider's Rates Are in Motion

The Arizona Association of REALTORS® Residential Seller's Property Disclosure Statement asks sellers which services a property gets and has a "Name of Provider" blank beside each one, including electricity and fuel. In most Valley cities that blank is a formality. In Mesa it can be one of the more useful lines in the packet. One city can have three different electric utilities and two gas utilities, and which ones serve a home depends on where it sits.

So two Mesa homes with the same square footage and the same thermostat habits can have noticeably different monthly costs. This winter the gap is also moving. SRP's temporary price cut is ending, and APS and the City of Mesa each have increases pending a vote, all on separate calendars.

Three electric utilities inside one city limit

The City of Mesa runs its own electric utility, but it covers only about 5.5 square miles, including downtown Mesa, and serves over 18,000 residential and commercial customers. The City's printable electric service area map marks that 5.5-square-mile boundary. Outside it, homes get electricity from SRP or APS. To check a particular home, each utility offers its own tool: SRP's address lookup and APS's service area maps.

The City has already estimated how much that difference costs. In its October 5, 2026 utility rate recommendation, Mesa's budget and energy staff compared their typical residential electric bill with estimated bills from the other two providers.

These are the City's estimates, not a quote for any particular house. They still give you a sense of scale. The APS figure is about $24 a month above SRP's single-family estimate and about $32 above the City's current typical bill. Over a year, that's a few hundred dollars that never shows up in a listing's price, taxes or HOA line.

Provider also decides more than the rate. Mesa's solar program page says net metering is available to qualifying City electric customers during FY26–27, subject to system-size limits, and it refers SRP customers to SRP. A home with panels on the roof may be on a different set of rules from a similar home a few miles away.

Gas has its own map, and it doesn't match the electric one

Mesa's gas utility is much larger than its electric utility. The City serves over 82,000 homes and businesses across 95 square miles of Mesa, plus the 235-square-mile Magma system in parts of Queen Creek, San Tan Valley and Pinal County. The City's electric and gas service area maps split gas territory into four labels: City of Mesa service territory, Southwest Gas service area, a joint Mesa/SWG service area, and the City's Magma territory.

So a home can have SRP electric and City gas, City electric and City gas, or a different pairing, depending on where the two maps overlap. Your gas provider also determines how the bill is built.

Mesa's gas rates are tiered at 25 therms a month, and City staff say the proposed increase for usage above that line "will continue the City's efforts to create a progressive rate structure for usage." That approach has been building for a while. In the FY25/26 cycle, staff recommended a 24% increase on winter Tier 2 residential gas and a 36.31% increase on winter Tier 2 residential electric. The Mesa Tribune reported that Council approved that package 4–1, with bills rising January 1. The City's current rate book lists the residential electric and gas schedules as effective January 1, 2026.

For a buyer, that design matters more than any single percentage. On City utilities, heavy winter use gets more expensive faster than light use does. A large older home with gas heat and a pool heater and a compact newer home could see very different bills even if both are on City gas.

This winter's rate calendar runs on three separate clocks

The providers don't change rates together. Here is where each one stands as of late October 2026.

SRP. The SRP board approved a temporary price cut of about 3% overall through its Fuel and Purchased Power Adjustment Mechanism, running from the May 2026 billing cycle through the October 2026 billing cycle. SRP estimated the average residential bill would drop $5.57 a month. On its price plan page, SRP says the $0.0038 per kWh reduction ends and prices go back to the listed levels with the November 2026 billing cycle. An SRP bill from this summer, handed over during escrow, will understate what the next few months cost.

APS. APS filed a rate case on June 13, 2025 asking for a 13.99% net revenue increase, which it estimated at about $20 a month for a typical residential customer using 1,000 kWh. According to the Arizona Corporation Commission, the evidentiary hearing ended July 7, 2026. A judge's recommendation is expected in late November, the Commission's vote deadline is December 31, and new rates, if approved, are expected in early 2027. That $20 figure is APS's request, not an approved rate.

City of Mesa. Staff recommend that new rates take effect February 1, 2027. Ordinances would be introduced December 1, followed by a public hearing on December 8. Until Council votes, the figures below are proposals.

For water, wastewater and solid waste combined, the City estimates the citywide increase at $5.92 a month. AZFamily reported the plan in October as raising most customers' bills by less than $6 a month. ABC15 had reported somewhat different water estimates in September from an earlier version of the plan.

The City memo also explains how the flat service charge works. Staff note that "the higher the consumption, the lower the percentage impact would be." A $1.50 increase is a larger share of a small gas bill than a large one, while the higher per-therm rates above 25 therms land hardest on heavy users. The same headline percentage can mean quite different things for two households.

Put together, a buyer closing in November on an SRP home, a buyer closing in December on an APS home, and a buyer closing in January on a home with City electric and gas are each signing up for bills that change at different times. None of them can rely on the seller's summer statements.

Checking a specific Mesa address before the inspection period ends

Provider identity is a fact about the parcel, and you can confirm it during due diligence:

1. Read the SPDS utility section first. Look at the "Name of Provider" entries for electricity and fuel, and ask about any that are blank. AAR posts the form on its residential resale forms page.
2. Check the address against the City maps. The electric and gas service area maps show whether the home is inside the 5.5-square-mile electric district and which gas zone it falls in.
3. Run SRP's lookup and check APS's maps. SRP notes that an address may get one or both of its services, electricity and water, so look up the specific address.
4. Ask for twelve months of bills, not three. Given the tiered winter rates on City utilities and SRP's temporary summer reduction, a short run of bills can mislead.
5. Match the bill to the right calendar. City customers can follow the December 8 hearing. APS customers can follow the Commission's decision due by December 31.

This is general information about published rates and disclosure forms, not legal or financial advice. Confirm the details for your situation with the utility and the appropriate professional.

FAQ

Does living in Mesa mean the City is my electric company? Only within the City's roughly 5.5-square-mile electric territory, which includes downtown. Elsewhere in Mesa, electricity comes from SRP or APS.

Are Mesa's February 2027 rates final? No. They are staff recommendations, with ordinances scheduled for introduction December 1 and Council action at the December 8, 2026 hearing.

Has APS raised rates yet? As of late October 2026, the Arizona Corporation Commission had not voted. Its deadline is December 31, and new rates, if approved, are expected in early 2027.

Will my gas come from the City or Southwest Gas? It depends on which zone the address falls in on the City's gas service area map, which shows City territory, Southwest Gas territory and a joint Mesa/SWG area.

If you're weighing two Mesa homes and want to know who serves each address and what that means for your monthly costs, Jesse Lowery can pull the providers, the full year of bills and the systems behind them into one side-by-side comparison before your inspection period closes.