General Information

FLATZ 623 is located at 11850 W Fillmore St, Avondale, AZ 85323, offering a central location near shopping, parks, dining, major employers and other everyday conveniences in Avondale, Arizona.
FLATZ 623 offers a variety of modern apartment homes including studio, one-bedroom, two-bedroom, and three-bedroom layouts with open concept floorplans and upscale finishes to match diverse lifestyle needs in Avondale, Arizona.
FLATZ 623 apartment homes range from approximately 568 square feet to 1,109 square feet, depending on the floorplan selected.
FLATZ 623 was completed in 2026, and is a newly developed community featuring modern modular construction that enhances energy efficiency, durability, and comfort in every apartment home.

Availability & Leasing

Explore available floorplans, choose your apartment home, and apply online. The leasing team will reach out if any additional information is needed to complete your application.
Apartment availability at FLATZ 623 changes regularly. Visit our Floorplans page to view available apartment homes, check current pricing, and schedule a tour online at a time that works for you.
Move-in specials and leasing incentives are offered throughout the year at FLATZ 623. Visit the website or contact the leasing office for current offers and pricing.
FLATZ 623 offers lease terms ranging from 3 to 18 months, depending on apartment availability and floorplan selection. Contact the leasing team for current lease options and pricing.
To qualify, applicants must complete a rental application and provide any required documentation for screening and income verification. Our resident screening criteria includes a credit check, criminal background check, and verification of income. Once all required information is received, most applications are processed within 48 to 72 hours.

Yes. FLATZ 623 offers in-person, self-guided, virtual, and video apartment tours. Schedule a tour online or contact the leasing team for available tour options. Schedule a tour here.

Before keys can be released, all required move-in items must be completed. This includes signing the lease and required documents, paying applicable move-in charges, completing required insurance requirements, and providing any outstanding documentation requested by the leasing office.
Payments are made through the online resident portal and can be funded using ACH, credit or debit cards, checks, money orders, or cash at participating retail locations, including CVS, 7-Eleven, and Walmart.
Yes. Residents are required to maintain liability insurance throughout their lease term. As a convenience, liability and personal contents coverage can be included in your monthly lease charges with our partnership with Beagle Insurance. You may also verify your proof of coverage with another insurance provider. The policy must include at least $100,000 in liability coverage and list the following entity as an interested party: Z-Modular FLATZ 623, LLC.
Yes. FLATZ 623 offers lease renewal options that may include shorter lease terms or month-to-month arrangements, depending on availability. Renewal offers are typically provided to residents at least 60 days prior to lease expiration, and a written 60-day notice is required if you choose to move out.
In addition to base rent, residents are responsible for parking, internet, door-to-door trash pickup, pest control, package lockers, and utilities. Utility charges vary based on usage.
Our community is not currently set up to accept Section 8 vouchers at this time. Please contact us directly if you would like to discuss your options.
Yes. FLATZ 623 has partnered with The Guarantors to provide a lease guaranty bond to residents who may not qualify. Visit our Flexible Living page to learn more about available qualification options.

Community Amenities

Residents of FLATZ 623 enjoy a wide range of resort-style amenities, including:

  • Resort-Style Swimming Pool
  • Multi-Sport Simulator Room with over 20 Games
  • 24/7 Fitness Center
  • CoWork Studio
  • Private Conference Room
  • Dog Parks
  • Social Suite with Kitchenette
  • Coffee Bar
  • Bocce Ball
  • Outdoor Fitness Equipment
  • Outdoor Social Spaces
  • Package Lockers
  • Door-to-Door Trash Pickup
  • Clubhouse with entertainment areas
  • High-Speed Bulk Wi-Fi in common areas
  • Bike Racks
  • Storage Units
  • Reserved & Covered Parking
  • Pet Wash Station
  • Grilling Stations
  • Fire Pit
  • 24-Hour Emergency Maintenance

The list below encompasses all equipment and weights available in the Fitness Center.

  • 1 Electric Bicycle
  • 2 Treadmills
  • 2 Elliptical Machines
  • 1 Multi-Function Exercise Machine (Lat Pulldown, Triceps
  • Pushdown, Multi-Function Pull-Up Bar)
  • 1 Easy Glide
  • 1 Triceps Pushdown Machine
  • 1 Leg Curl/Leg Extension Machine
  • 3 Exercise Balls (Small, Med, Large)
  • 6 Medicine Balls, 6 lb., 8 lb., 10 lb., 12 lb., 15 lb., and 20 lb.
  • 7 Kettlebells, 5 lb., 8 lb., 10 lb., 15 lb., 20 lb., 25 lb., and 30 lb.
  • 4 Yoga Mats
Yes. FLATZ 623 offers dedicated coworking space and a private conference room for residents who work remotely, study, or need a quiet place to focus.
Yes. Residents can enjoy outdoor social spaces including a fire pit, dog parks, and grilling stations designed for community connection.
Yes. Residents can choose the Outdoor Fitness Equipment area to workout outside with similar equipment to Cross-fit. There is also an indoor fitness center available.
Yes. FLATZ 623 offers a secure package locker room with 24/7 access, making it easy to receive and retrieve deliveries at your convenience.
FLATZ 623 offers Door-to-Door Trash Pickup five days a week. Residents can place bagged trash outside their apartment home for convenient scheduled pickup.
No. FLATZ 623 is not a gated apartment community.
  • Resort Pool and Spa: 10 am - 10 pm
  • Dog Park: 24 hours
  • Clubhouse: 24 hours
  • Coffee Lounge: Monday-Friday 9am to 6pm; Saturday & Sunday 10am-5pm
  • Multi-Sport Simulator: Monday-Friday 9am to 6pm; Saturday & Sunday 10am-5pm

Apartment Features

Yes. All apartment homes at FLATZ 623 include an in-unit washer and dryer for added convenience.
FLATZ 623 apartment homes feature quartz countertops, stainless steel appliances, vinyl plank flooring, keyless entry, and private balconies or patios. Open-concept floorplans, energy-efficient design, and enhanced sound insulation help create a comfortable living experience.
No. Utilities such as electricity, water, and sewer are billed separately from base rent.

Internet

Yes. High-speed Wi-Fi is available in each apartment and in the common areas throughout the FLATZ 623 community.
Yes. Every apartment home has its own high-speed internet. Upload and download speeds may vary.

Pet Policy

Yes. FLATZ 623 is a pet-friendly apartment community with no weight limits or breed restrictions and allows up to two pets per apartment home. Pet fees, pet rent, and other restrictions may apply. All residents are required to complete a PetScreening profile, including pet owners, residents without pets, and those requesting accommodations for service or assistance animals.
Yes. FLATZ 623 offers three separate on-site dog parks and outdoor pet areas for residents and their pets.

Maintenance & Services

Residents can submit maintenance requests through the Resident Portal.
Yes. 24-hour emergency maintenance services are provided for urgent service needs. Emergencies such as active flooding, fire/life-safety concerns, loss of essential services, or other conditions that may cause immediate property damage or present a safety concern should be reported immediately by calling (623) 240-9855, choose option 3, rather than submitting as a routine request.
Maintenance requests are typically completed within 48 hours, although timing may vary based on the type of repair and any parts or vendor services required.

Office & Contact Information

FLATZ 623 offers weekday and weekend leasing office hours for your convenience. Visit the Contact page for current office hours and contact information.

Learn More

Call the FLATZ 623 leasing team at (623) 240-9855 to ask questions, schedule a tour, or learn more about apartment homes in Avondale, Arizona.

Location & Neighborhood

FLATZ 623 is located in Avondale, AZ with everyday conveniences, including shopping centers like Coldwater Springs Promenade and Rio Estrella Plaza, parks, dining options, and major roadways in Avondale and the West Valley.
FLATZ 623 is located in the Littleton Elementary School District and near secondary schools served by the Tolleson Union High School District.

Parking & Transportation

Yes. FLATZ 623 offers reserved covered and uncovered digital parking permits for residents and guests for a fee, managed by ParkingTree.
All resident vehicles must be registered with the community's parking system. Overnight guests are required to register their vehicle with ParkingTree to obtain a guest parking permit.
Yes. FLATZ 623 features six EV charging stations, providing convenient electric vehicle charging for residents.
Yes. Select storage options are available at FLATZ 623. Availability and pricing may vary, so contact the leasing office for details.
Yes. FLATZ 623 offers bike racks and bike-friendly amenities, making it convenient for residents who enjoy cycling around Avondale.

Additional FAQs

Yes. Accessible apartment options may be available. Contact the leasing office to learn more about accessibility features and options.
Yes. FLATZ 623 has a routine nightly patrol service seven days a week.
FLATZ 623 offers discount programs throughout the year for qualifying residents. Contact the leasing office for current preferred employer, military, and other available discount programs.
Yes. FLATZ 623 offers a resident referral program that rewards residents for referring friends and family to the community. Contact the leasing office for current reward amounts and program details.
FLATZ 623 is built with steel framing and double-insulated walls designed to enhance energy efficiency, sound insulation and everyday comfort - part of our Better-Built Living approach.
FLATZ 623 uses identity verification and fraud prevention screening during the application process to help protect residents, prevent fraud, and ensure applications are reviewed securely and consistently.

Rent is due on the first of each month, with a grace period through the third. Partial payments are not accepted. Additional legal or court fees may apply if rent remains unpaid.

Your lease agreement requires a written 60-day advance notice.
Residents may request reasonable apartment modifications or accommodations by submitting a written request to the leasing office for review. Approved modifications may require the apartment home to be restored to its original condition before move-out.