Rainbow Valley Homes and Acreage for Sale, AZ

Rainbow Valley is a rural, mostly unincorporated part of Maricopa County south of the Gila River, between Buckeye and the Estrella area of Goodyear. Most homes sit on an acre or more, with plenty of horse property, manufactured homes and custom homes on wells and septic. Most addresses use the Buckeye 85326 ZIP code.

I'm Terry Day with DeLex Realty. Rainbow Valley is one of the last places close to the West Valley where you can still find open desert, big lots and room for animals, with the Estrella and Buckeye-area growth just a short drive away. Rural property takes more homework than a home in a subdivision, so this page covers what the area is like and what I check before a client buys out here.

See Rainbow Valley homes for sale Call Terry: 602-483-4665

Where Rainbow Valley is

Rainbow Valley sits south of the Gila River in the southwest part of the Valley. The Estrella foothills and the Goodyear community of Estrella are to the east, Buckeye is to the north across the river, and open desert stretches south toward the Sonoran Desert National Monument. Waterman Wash runs through the valley, and Maricopa County's planning maps show Rainbow Valley Road, Elliot Road, Patterson Road and Riggs Road as the main grid.

Most of the area is unincorporated, which means Maricopa County, not a city, handles zoning and building permits. The county guides it with the Rainbow Valley Area Plan, which calls for mostly very low density, about one home per acre or less, and focuses on keeping the rural lifestyle and protecting hillsides and floodplains. The plan notes that it coordinates with Goodyear and Buckeye, and the City of Goodyear borders the planning area. Goodyear has also annexed some land to the south near Mobile for a solar and battery project, so city limits here can change. If a parcel's jurisdiction matters to you, I check it with the county and the city before you buy.

The homes and land

Rainbow Valley is mostly acreage. You will see:

• Horse property with room for barns, arenas and pens.
• Manufactured homes on an acre or more, often the most affordable way into acreage.
• Custom site-built homes, some with shops, RV parking and guest quarters.
• Vacant land for buyers who want to build.

County rural zoning sets the minimum lot size per home. Under the Maricopa County Zoning Ordinance, Rural-43 means at least 1 acre per home, Rural-70 means about 1.6 acres (70,000 square feet), and Rural-190 means about 4.4 acres (190,000 square feet). What you can build, how many animals you can keep and whether a lot can be split all depend on the zoning, so I always pull it for the exact parcel. Browse more horse property in Arizona.

Wells, septic and water

Most Rainbow Valley homes have a private or shared well and a septic system. Here is what to know in general terms:

• Wells. The Arizona Department of Water Resources (ADWR) treats most home wells as "exempt" wells, with a pump of 35 gallons per minute or less. You can look up a well's record in ADWR's well registry, and a new owner needs to update the registration after closing. Drilling or deepening a well requires a Notice of Intent filed with ADWR and a licensed driller.
• Shared wells. ADWR treats shared-well agreements as private contracts and does not settle disputes, so read the agreement before you buy.
• Septic. Under ADEQ rules, the seller has a qualified inspector check the septic system within six months before the sale, and the buyer files a Notice of Transfer within 15 calendar days after closing.
• Water testing. I recommend testing well water and getting a flow test as part of your inspection.
• Bigger picture. In 2023 the state said new subdivisions in parts of the Phoenix area can no longer be approved on local groundwater alone. That does not stop someone from buying an existing home with a well, but it is worth understanding if you are buying land.

ADWR also tracks a land subsidence area in Rainbow Valley, and the Arizona Geological Survey has mapped flood hazards here. Washes can run fast after storms, and residents have raised flooding concerns, so check flood zones and the route to the property in every season.

Things to do

• Estrella Mountain Regional Park in Goodyear, about 19,840 acres with roughly 33 miles of trails near where the Gila, Salt and Agua Fria rivers meet.
• Robbins Butte Wildlife Area, 1,681 acres on both sides of SR 85 along the Gila River southwest of Buckeye, for wildlife viewing, hiking and fishing.
• Phoenix Raceway in Avondale for NASCAR weekends.
• Shopping, dining and new growth in Goodyear and Buckeye, plus the Estrella and Estrella Mountain Ranch communities next door.

Schools

Rainbow Valley Elementary School, on Narramore Road, is part of Liberty Elementary School District. High school students in this area generally attend Buckeye Union High School District schools. Attendance depends on the exact address, so confirm boundaries with each district.

Buying in Rainbow Valley

• Pull the parcel's zoning, flood zone and jurisdiction (county or city) before you write an offer.
• Get the well record, a water quality test, a flow test and any shared-well agreement.
• Read the septic inspection report from the seller.
• Drive the road in, and ask who maintains it. Many rural roads are private.
• Confirm the electric, internet and propane options for the exact address.
• Manufactured homes and land often need lenders who handle rural property. New to buying here? Start with first steps to buying a home in Arizona.

Selling in Rainbow Valley

Acreage buyers want answers up front. I help sellers gather the well registration, any shared-well agreement, the septic inspection and permits for barns, shops and additions before we list. My guide on how to price your Arizona home to sell explains how I price rural property.

Questions buyers ask

Is Rainbow Valley part of Buckeye or Goodyear?
Most of Rainbow Valley is unincorporated Maricopa County, not part of either city. Many homes use a Buckeye mailing address and ZIP code 85326, and the City of Goodyear borders the area to the east.

Do Rainbow Valley homes have city water and sewer?
Most Rainbow Valley homes use a private or shared well and a septic system. Check the well record, water quality and septic inspection for any home you consider.

Can I keep horses in Rainbow Valley?
Many Rainbow Valley properties are set up for horses, and county rural zoning generally allows livestock. The number of animals depends on the parcel's zoning and size, so confirm it for the exact property.

How big are the lots in Rainbow Valley?
Most Rainbow Valley lots are about an acre or larger, and the county plan aims to keep density at about one home per acre or less. Zoning such as Rural-43, Rural-70 and Rural-190 sets the minimum lot size.

Nearby areas

Buckeye · Goodyear · Estrella · Estrella Mountain Ranch · Avondale · All Buckeye homes for sale

Area details come from public sources including Maricopa County, ADWR and ADEQ, and they can change. Confirm zoning, jurisdiction, flood zone, well and septic details and school assignment for a specific property before you buy.