The William

43300 Mossimo Sq, Chantilly, VA 20152

Visit The William website

·(571) 582-6511·Verified

Apartment building

1-3 beds

Pet-friendly

Covered parking

In-unit laundry (W/D)

Available units

Price may not include required fees and charges. Price shown reflects the lease term provided for each unit.

Unit , sortable column	Sqft, sortable column	Available, sortable column	Base rent, sorted ascending
Unit 4-307 1 bd, 1 ba	698	Now	$2,098
Unit 1-204 1 bd, 1 ba	644	Now	$2,132
Unit 1-212 1 bd, 1 ba	644	Now	$2,132
Unit 1-312 1 bd, 1 ba	644	Now	$2,132
Unit 1-404 1 bd, 1 ba	644	Now	$2,132
Unit 1-403 1 bd, 1 ba	644	Now	$2,143
Unit 3-116 1 bd, 1 ba	655	Now	$2,162
Unit 3-216 1 bd, 1 ba	655	Now	$2,176
Unit 3-207 1 bd, 1 ba	698	Now	$2,192
Unit 3-307 1 bd, 1 ba	698	Now	$2,217
Unit 4-407 1 bd, 1 ba	698	Now	$2,243
Unit 3-416 1 bd, 1 ba	655	Now	$2,251
Unit 2-407 1 bd, 1 ba	698	Now	$2,267
Unit 3-112 1 bd, 1 ba	761	Now	$2,283
Unit 3-104 1 bd, 1 ba	761	Now	$2,298

What's special

Pet washing station

Clean pets, cleaner home

A pet washing station is rare. Less than 5% of buildings in Loudoun County have this feature.

Set within the heart of South Riding, VA, The William offers a peaceful retreat surrounded by nature and convenience. Residents enjoy a short walk to expansive trail systems, along with access to nearby pickleball and basketball courts for active outdoor living. With Route 50 and major commuter corridors just minutes away, The William connects you seamlessly to the best of Loudoun County and beyond.

Skip to the end of the carousel

The William
B5B | Two Bedroom Apartment
A2A | One Bedroom Apartment

Skip to the beginning of the carousel

Skip to the end of the carousel

Video 1

Skip to the beginning of the carousel

Facts, features & policies

Building Amenities

Community Rooms

Business Center With Co-Working Offices

Club House: Resident Club Room With Lounge Seating

Pet Washing Station

State-Of-The-Art Fitness Center Featuring An Exerc

Fitness & sports

Basketball Court: Connected To Elk Lick Park With Dog Park, Pickleba

Other

In Unit: Full-Size Washer And Dryer

Swimming Pool: Resort-Style Pool Courtyard With Tanning Ledge, G

Outdoor common areas

Balcony: Private Patios And Balconies *

Peaceful Fishing Pond Along The Trail

Security

Controlled Access Community

Services & facilities

Bicycle Storage: Bike Storage

Package Service: Resident Storage Rooms And Lockers Available

Unit Features

Appliances

Dryer

Washer

Internet/Satellite

High-Speed Internet Ready: Wi-Fi Throughout Common Areas

Policies

Parking

Covered Parking

Other

Lease terms

12, 13, 14, 15, 16, 17, 18

Skip to the end of the carousel

DogsStatus: Allowed
Number allowed2
Monthly dog rent$50
One-time dog fee$500
CatsStatus: Allowed
Number allowed2
Monthly cat rent$50
One-time cat fee$500

Skip to the beginning of the carousel

Additional details

| Restrictions: Restrictions apply. Please contact office for details.

Special Features

Chef-Inspired Kitchens

EV Car Charging Stations

Gourmet Preparation Island *

Green Community - Leed For Homes Bronze

Oversized Soaking Tub And/Or Walk-In Shower *

Quartz Countertops And Elegant Tile Backsplashes

Scenic, Natural-Surface Hiking Trails On Site

Single And Dual Vanities *

Spacious Walk-In Closets With Custom Shelving *

Stainless Steel, Energy Efficient Appliances

Neighborhood: 20152

Areas of interest

Use our interactive map to explore the neighborhood and see how it matches your interests.

Travel times

Getting around

Walk Score^®

/ 100

Car-Dependent

Transit Score^®

/ 100

No Nearby Transit

Bike Score^®

/ 100

Somewhat Bikeable

Nearby schools in Chantilly

Hutchison Farm Elementary School

Grades PK-5 • 1 miles

9/10

GreatSchools^® Rating

Test Score Rating

8/10

Student Progress Rating

9/10

J Michael Lunsford Middle School

Grades 6-8 • 2 miles

9/10

GreatSchools^® Rating

Test Score Rating

9/10

Student Progress Rating

8/10

Freedom High School

Grades 9-12 • 1.6 miles

9/10

GreatSchools^® Rating

Test Score Rating

8/10

College Readiness Rating

10/10

Green Spaces
South Riding has community parks, playgrounds, sports fields and paved paths for time outdoors.
Shopping Scene
Local retail centers provide convenient access to shops, cafés and casual dining.
Highway Access
Major roads connect the area with Chantilly and other parts of the Dulles corridor.
Outdoor Activities
Neighborhood paths and nearby trails support walking and biking.

South Riding, Burns Crossroads, Conklin and Pleasant Valley span the Loudoun–Fairfax edge, where suburban neighborhoods meet open fields, wooded stretches and the broad roads of the Dulles corridor. Summers are humid and winters can bring occasional snow. South Riding’s community parks, playgrounds, sports fields and paved paths offer outdoor options, while nearby parks and trails add room to walk or bike. Shops, cafés and casual dining cluster around local retail centers, with larger shopping and entertainment choices a short drive away in Chantilly and along Route 50. The area’s history is tied to the region’s rural crossroads and later suburban growth; galleries and nightlife are more limited locally than in nearby urban centers. Driving is the most practical way to get around, with access to major roads and Dulles-area transit connections. For ZIP code 20152, the median rent is $3,089 per month, with a typical range of $994 to $5,500, based on 49 active listings.

Cost calculator

Skip to the end of the carousel

Skip to the beginning of the carousel

Listing order may reflect relevance, quality, and paid promotion.

Skip to the end of the carousel

Skip to the beginning of the carousel

Frequently asked questions

Where is The William located, and what is the neighborhood like?

The William is located at 43300 Mossimo Sq, Chantilly, VA. The surrounding area includes multiple restaurants and cafes within 2 miles, such as Chick-fil-A, Cerrito's Pupuseria, and Starbucks.

What is the average rent in Chantilly, VA?

Based on the latest Zillow data, the median rent across all unit types in ZIP code 20152 in Chantilly is currently $3,089 per month. Prices vary by neighborhood, floor plan, and building amenities.

What schools are assigned to The William?

The schools assigned to The William include Hutchison Farm Elementary School, J Michael Lunsford Middle School, and Freedom High School.

What are the grocery stores and everyday shopping options near The William?

The William is located near 7 grocery stores, including SIP Smoothie Cafe (0.3 miles) and Triveni Supermarket (0.5 miles). Additional shopping options, including The Home Depot, are approximately 0.7 miles away.

What is the minimum and maximum rent for The William?

The total price for an apartment unit in The William ranges from $2,098 to $4,071. The total price will vary by floor plan, unit size, and unit amenities.