NEIGHBORHOOD

Sunnyside

East Flagstaff along Fourth Street, inside city limits. MLS data as of September 2026

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Sunnyside is one of Flagstaff's older east-side neighborhoods, first platted in 1925 along what became Route 66, with modest single-family homes on city lots, a nonprofit neighborhood association, and quick access to Fourth Street.

Highlights

Single-family homes on city lotsNo HOA on recent salesSpruce Wash flood work completed 2026Near Ponderosa Park and the AquaplexAbout 4 minutes to Safeway

Sunnyside, at a glance

City or county

Inside City of Flagstaff limits; City of Flagstaff Fire Department

Typical lot size

About 6,250 sq ft (0.14 acre), median of homes sold

Water and sewer

Inside city limits, where City of Flagstaff water and sewer is standard

HOA

None on recent single-family sales; the Sunnyside Neighborhood Association is a voluntary nonprofit, not an HOA

Wildfire setting

Pines and yards in the city grid; Spruce Wash, a Rio de Flag tributary, runs through the area

Build-out

Largely built out; homes sold were built 1915 to 1991

Snow and plowing

Street status and plowing not published

Homes sold, last 12 months

11, all single-family

Short-term rentals: city license

City of Flagstaff rules; no HOA layer for most homes

Sunnyside is inside city limits, so the City of Flagstaff's short-term rental license applies: $250 a year, an Arizona TPT license, notice to adjacent, across-the-street, and diagonal neighbors with a 24-hour emergency contact, $500,000 in liability insurance, a sex-offender registry check before each stay, required equipment, and hotel-rate sales and BBB taxes. ADUs that received a Certificate of Occupancy after September 14, 2024 require the owner to live on the property. Single-family homes here generally have no HOA, so the City's rules are usually the whole picture. Townhome and condo complexes in the area, such as Arroyo Seco Townhomes and Pine View Village, have their own associations.

Getting around

Fourth Street to Route 66, Cedar Avenue, and I-40

From East Street, Safeway on Cedar Avenue is about 4 minutes away; Bashas' on Humphreys Street and Walmart on Huntington Drive about 6; Whole Foods and Sam's Club about 7; Natural Grocers about 8; Sprouts and Target about 10. Flagstaff Medical Center is about 2.2 miles, downtown about 3.1, NAU about 3.5, and Pulliam Airport about 8.4.


Sunnyside was first platted in 1925 by Alf Dickinson and Son on a 160-acre former ranch along the National Old Trails highway, later Route 66, then about a mile and a quarter east of the city limits. It grew largely outside city zoning until the City annexed it in 1959, according to a local brokerage, which is part of why its homes and land uses vary from block to block. Main streets include Fourth Street, Main Street, West Street, and East Street.

Sunnyside rewards buyers who look closely. The homes and lots vary a lot from street to street, so we walk the block, look at the drainage, and look at what has been updated before we talk price.

Over the last twelve months the MLS shows 11 closings, all single-family, between $294,500 and $530,000, with a median of $390,000 and the middle half between about $339,000 and $433,000. The typical home was about 1,120 square feet, built around 1956, on about 6,250 square feet. Median days on market was 59, and none of the sales listed an HOA fee.

After the 2019 Museum Fire damaged the Spruce Wash watershed above town, 2021 monsoon storms caused substantial flooding in Sunnyside along the wash. The City built nine Spruce Wash flood mitigation projects, including detention basins, channel work, and culverts, and reported them complete in summer 2026. Ponderosa Park on First Street has pickleball, tennis, volleyball, and basketball courts, and the Flagstaff Aquaplex is on Fourth Street.

Questions buyers ask us most about Sunnyside

Is Sunnyside in a flood zone?

Parts of Sunnyside along Spruce Wash flooded in 2021 after the Museum Fire, and the City completed nine flood mitigation projects in summer 2026. Flood zones are mapped address by address, so the designation for the specific lot matters.

Does Sunnyside have an HOA?

How old are the homes in Sunnyside?

What do homes in Sunnyside cost?

Terrain & Access

The neighborhood, mapped

Sunnyside sits along Fourth Street on Flagstaff's east side, north of Route 66. Spruce Wash runs through the neighborhood toward the Rio de Flag.

In the Area

What's changing around Sunnyside

2026Flood

Spruce Wash flood projects completed

The City of Flagstaff reports it has completed the Spruce Wash Flood Mitigation suite of nine projects, built 2021 to 2026 to reduce post-Museum Fire flooding in the Sunnyside, Paradise, and Grandview neighborhoods.

connect.flagstaffaz.gov
2024Flood

Stormwater diversion at the Killip basins

In December 2024 FEMA published a final public notice for a City project adding an outlet structure and 42-inch pipe at the Killip Regional Detention Basins to divert stormwater from the Spruce Wash drain to the West Wash storm drain.

flagstaff.az.gov
2025Roads

Roundabout at Fourth Street and Lockett Road

The City replaced the signal at Fourth Street and Cedar Avenue/Lockett Road with a $6.9 million roundabout. Work began March 31, 2025, and the intersection reopened August 4, 2025.

connect.flagstaffaz.gov

Neighborhood

Areas within Sunnyside

Sunnyside (1925 plat)

The original subdivision, platted along the National Old Trails highway with lots of 50 by 142 feet.

Sunnyside North Annex

The subdivision name on most recent single-family sales, on streets such as West Street and Main Street.

Sunnyside Farms

A subdivision name that appears on several recent single-family sales.

Arroyo Seco Townhomes and Pine View Village

Townhome and condominium associations managed by Peaks HOA Management.

Recent Sales in Sunnyside

1914 E 1st Avenue,  Flagstaff,  AZ 86004
Single Family Home

$459,000

$6K

1914 E 1st Avenue, Flagstaff, AZ 86004

  • 4 Beds
  • 2 Baths
  • 1,246 SqFt

Listing Provided By Realty One Group, Mountain Desert

2920 N West Street,  Flagstaff,  AZ 86004
Single Family Home

$415,000

2920 N West Street, Flagstaff, AZ 86004

  • 3 Beds
  • 1 Bath
  • 1,003 SqFt

Listing Provided By John F. Wilson

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Currently Available in Sunnyside

Image
Address
Sold Price
Sold Date
Configuration
Property Type
1914 E 1st Avenue,  Flagstaff,  AZ 86004
1
$459,000
$6K
4 beds
2 baths
1,246 SqFt
Single Family Home
2920 N West Street,  Flagstaff,  AZ 86004
26
$415,000
3 beds
1 bath
1,003 SqFt
Single Family Home
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What makes this neighborhood unique

Sunnyside is one of the more attainable single-family neighborhoods inside Flagstaff city limits, close to Fourth Street, parks, and the Aquaplex, with no HOA on recent sales. The plan focuses on the individual lot: drainage and flood history, the home's condition, and the mix of land uses on the block.

Ready to look closer at Sunnyside?

A private consultation: comps that reflect each home's condition, a flood zone and drainage review for the specific lot, and the City rental rules if income is part of your plan.

Request a Neighborhood Briefing