Utility Costs When Buying or Selling a Colorado Home

A Front Range single-family home runs $250 to $450 a month in utilities: $100 to $250 to Xcel Energy for gas and electric depending on the season, $40 to $150 for water and sewer depending on the lawn, and $10 to $30 for trash and recycling. Before you buy, ask the seller for 12 months of bills through your agent; before you sell, put the 12-month average in the listing so buyers stop guessing high.

This guide names the providers from Fort Collins to Colorado Springs, gives the monthly ranges, explains why altitude changes the heating math, and covers solar leases and xeriscape, the two items that surprise buyers at the closing table. Buyers start with how the Kenna Real Estate Group helps buyers; sellers start with how the group helps sellers.

Who provides utilities on the Front Range

Colorado has one dominant investor-owned utility, a set of municipal utilities, and rural electric cooperatives at the metro edges. The provider is fixed by the address; you do not get to shop it.

The Denver utility providers and costs guide goes provider by provider for the city, and the Highlands Ranch HRCA and water guide covers Centennial Water's rates and the HRCA fee that sits next to them.

What each utility costs per month on the Front Range

• Xcel Energy electric. $70 to $120 a month for a 2,000 sq ft home without central air, $110 to $180 in July and August with it. Xcel bills time-of-use rates for residential customers, so a dryer run at 8 p.m. on a weekday costs more than the same load on Saturday morning.
• Xcel Energy natural gas. $25 to $45 in summer for the water heater and range; $120 to $220 in December, January, and February for a 2,000 sq ft home with a furnace older than 15 years. A 95% efficient furnace cuts the winter number by a quarter.
• Water and sewer. $40 to $70 a month from October to April for indoor use only. June through September, a 6,000 sq ft Kentucky bluegrass lawn adds $60 to $150 on Denver Water's tiered rates and more on Aurora Water and Castle Rock Water, which price outdoor tiers higher to protect a smaller supply.
• Trash and recycling. Denver's pay-as-you-throw fee bills by cart size, from a small cart to a large one, and includes recycling and compost. Suburban private haulers run $20 to $35 a month.
• Metro district and HOA. Not a utility, but on the same monthly budget line. Read the Denver HOA rules and fees guide before you compare two homes on utilities alone.

Why a new Parker home costs more to heat than an old Denver bungalow

Size beats age. A 1,100 sq ft Denver brick bungalow with a 1990s furnace and no air conditioning costs less to run than a 3,200 sq ft two-story in Parker with a finished basement, two furnaces, and two condensers, even though the Parker home has 2x6 walls and low-E windows. Compare utilities per home, never per square foot, and ask for the actual bills.

Gas versus electric heat at 5,280 feet

Natural gas is the cheaper fuel per unit of heat on the Front Range, and it heats most homes from Fort Collins to Pueblo. Two altitude facts change the math for buyers looking at all-electric homes:

• Furnaces lose capacity at altitude. Thinner air carries less oxygen, so gas furnaces are derated about 4% per 1,000 feet of elevation. At Denver's 5,280 feet, a furnace is set up to deliver about 20% less heat than its sea-level rating, and the installer must make that adjustment. A furnace sized for the nameplate and not the altitude short-cycles and wears out early.
• Electric resistance heat is expensive. Baseboard or electric-furnace heat costs 2 to 3 times as much as gas per unit of heat at Xcel Energy's rates. A 1970s all-electric condo in Lakewood with baseboards is the highest winter bill on this list.
• Cold-climate heat pumps work here. A cold-climate heat pump delivers heat below 0 degrees Fahrenheit and runs on electricity at 2 to 3 times the efficiency of resistance heat, which puts it close to gas on cost and ahead of it in a home with solar. Xcel Energy rebates and a Colorado state heat pump tax credit reduce the install price; confirm the current amounts with the installer and a Colorado CPA.

How to get 12 months of utility history from the seller

Ask through your agent in the first days under contract, before the inspection objection deadline, so a bad number can still become a repair request or a price conversation. Three sources, in order:

1. The seller's Xcel Energy account. Xcel's online account shows 24 months of usage and cost by month. The seller downloads it in five minutes. Ask for the screenshot or PDF for every month, not the average.
2. Xcel Energy by phone. Xcel provides the 12-month average bill for an address to a prospective buyer or tenant who calls with the service address. Use it to check the seller's numbers.
3. The water provider. Denver Water, Aurora Water, and Castle Rock Water bill in tiers, and the summer months tell you how much lawn the seller was watering. Ask for June through September specifically.

The Colorado Seller's Property Disclosure, a Real Estate Commission form the seller completes, asks about the water source, the sewer type, the heating and cooling systems, and any solar or other energy systems; it does not list bills. Read it next to the actual statements.

Solar leases, power purchase agreements, and owned panels

Front Range roofs are a solar salesman's dream: 300 days of sun and Xcel Energy net metering that credits the electricity you export. The panels themselves come three ways, and the way decides what happens at closing.

• Owned outright. The panels transfer with the house like a furnace. The appraiser adds value based on the system's age and output, and the seller lists the annual Xcel credit. Ask for the installer's warranty paperwork and the date of the last inverter replacement; inverters are $1,500 to $3,000 and last 10 to 15 years.
• Financed with a loan. The seller pays the loan off at closing from proceeds, or the buyer assumes it with lender approval. A UCC filing on the panels shows up in the title work; it must be released before closing.
• Leased or under a power purchase agreement. The solar company owns the panels. The buyer must qualify with the solar company and assume the lease, with 10 to 15 years left at a payment that escalates each year in many contracts. Some buyers walk. A seller with a lease starts the transfer paperwork before listing; it takes two to four weeks.

Ask the county assessor whether the array is on the assessed value and confirm any property tax treatment with a Colorado CPA. The green and energy-efficient homes in Denver post covers what Denver buyers pay extra for and what they do not.

Xeriscape and the summer water bill

Outdoor watering is half of a Front Range home's annual water use and nearly all of the summer bill. Replacing a bluegrass lawn with drip-irrigated native plants, buffalo grass, or gravel and boulders cuts the June-to-September bill by half or more. Colorado law bars HOAs from banning xeriscape, and Denver Water, Aurora Water, and Castle Rock Water pay turf-replacement rebates per square foot removed; the amounts change each season, so check the provider's site before you dig. The Front Range xeriscaping guide covers plant choices, and how to save water in Denver homes covers the indoor side.

For sellers: make utility costs a selling point

• Publish the 12-month average. Put the Xcel and water averages in the listing remarks and in a one-page sheet on the kitchen counter at showings. A buyer who sees $185 average stops assuming $350.
• Fix the two things buyers price in. A furnace past 20 years and single-pane windows both get deducted at the inspection objection. A 95% furnace runs $5,000 to $8,000 installed on the Front Range; replace it before listing when the existing unit is over 20 years old or the last repair cost more than 40% of a new one.
• Book an energy audit. Xcel Energy offers home energy assessments to its customers; the report lists air sealing and attic insulation upgrades that cost $1,500 to $4,000 and show up as a lower winter bill on the sheet you hand buyers.
• Start the solar transfer early. A leased system with no transfer paperwork at the inspection deadline costs a week and sometimes the buyer.

The preparing and adding value before selling page ranks these fixes against the rest of the pre-listing list, and the energy efficiency as a decision factor in Colorado post explains why buyers now ask for the numbers.

Utilities and the mortgage approval

Utilities are not in the debt-to-income ratio a lender uses, so the loan approval does not protect you from a $400 winter bill. Build them into the monthly budget you set with the lender before choosing a price ceiling. Mike Oswald, VP of Mortgage Lending at Rate, NMLS 261003, Equal Housing Lender, works through the full monthly cost with Kenna Real Estate Group buyers. You are free to use any lender. The Colorado home financing guide covers the loan side, and the first-time home buyer guide for Colorado covers the budget.

Where to go next

• Denver utility providers and costs guide
• The Colorado Home Buyer's Guide
• The Colorado Home Seller's Guide
• Pricing your Colorado home with the Smart Pricing Report
• Explore the Denver metro area
• Kenna Real Estate Group agents

Talk to the Kenna Real Estate Group

The Kenna Real Estate Group at Keller Williams DTC requests 12 months of utility bills on every purchase before the inspection objection deadline, checks solar paperwork against the title work, and helps sellers put a real 12-month average in the listing. Call or text 303-955-4220. A live person answers. Not a robot, not a phone tree. To compare homes and their running costs, search every home for sale in Colorado.