OFFER:
Now offering up to 8 weeks FREE if you move in by 12/31! Restrictions apply. 14+ month lease required.
Updated 31 Minutes Ago
Highlights
Rent Special
Pet Friendly
Location
43300 Mossimo Sq, Chantilly, VA 20152|South Riding
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Property management
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Property Overview
The William offers a strong Zumper Expert Rating, reflecting its overall quality and appeal across key renter priorities. Residents can expect a balanced mix of advantages, including practical conveniences and attractive community or building amenities, along with notable features that enhance everyday comfort and lifestyle.
This summary uses Zumper’s proprietary data. “Zumper Expert Ratings,” “Things you’ll love,” and “Great for” are based on our internal analyses of market trends and renter insights.
Things you’ll love
Balcony- Extra storage
- Fitness center
Great for
Work-from-home
Pet owners
Eco living
Floor plans
| 1 BED STUDIO | S10A | 1 bed | 1 bath | 698 sqft | $2,098–$2,243 /mo | 5 units available | ||
| 1 BED STUDIO | S5A | 1 bed | 1 bath | 644 sqft | $2,132 /mo | 2 units available | ||
| 1 BED STUDIO | S6A | 1 bed | 1 bath | 644 sqft | $2,132 /mo | 2 units available | ||
| 1 BED STUDIO | S8A | 1 bed | 1 bath | 655 sqft | $2,138–$2,227 /mo | 3 units available | ||
| 1 BED STUDIO | S3A | 1 bed | 1 bath | 644 sqft | $2,143 /mo | 1 unit available | ||
| 1 BEDROOM | A4A | 1 bed | 1 bath | 763 sqft | $2,182–$2,307 /mo | 2 units available | ||
| 1 BEDROOM | A2A | 1 bed | 1 bath | 761 sqft | $2,198–$2,422 /mo | 25 units available | ||
| 1 BEDROOM | A5A | 1 bed | 1 bath | 763 sqft | $2,328 /mo | 6 units available | ||
| 1 BEDROOM | A1A | 1 bed | 1 bath | 750 sqft | $2,367 /mo | 4 units available | ||
| 2 BEDROOM | B2B | 2 bed | 2 bath | 1,002 sqft | $2,847 /mo | 1 unit available | ||
| 2 BEDROOM | B4B | 2 bed | 2 bath | 1,015 sqft | $3,007–$3,057 /mo | 2 units available | ||
| 2 BEDROOM | B7B | 2 bed | 2 bath | 1,215 sqft | $3,173–$3,248 /mo | 2 units available | ||
| 2 BEDROOM | B5B | 2 bed | 2 bath | 1,211 sqft | $3,184 /mo | 3 units available | ||
| 2 BEDROOM | B6B | 2 bed | 2 bath | 1,215 sqft | $3,248 /mo | 2 units available | ||
| 2 BEDROOM | B8B | 2 bed | 2 bath | 1,375 sqft | $3,533 /mo | 1 unit available | ||
| 3 BEDROOM | C2B | 3 bed | 2 bath | 1,462 sqft | $3,599–$3,981 /mo | 4 units available | ||
| 3 BEDROOM | C1B | 3 bed | 2 bath | 1,450 sqft | $3,995 /mo | 1 unit available | ||
| 3 BEDROOM | C3B | 3 bed | 2 bath | 1,462 sqft | $4,071 /mo | 1 unit available |
Amenities for The William
Apartment Amenities
| Chef-Inspired Kitchens | Private Patios and Balconies |
| Walk-in Closet |
Appliances
| Full Size Washer and Dryer | In-Unit Laundry |
| Stainless Steel Energy-Efficient Appliances |
Tech
| High-Speed Internet |
Building
| Bike Storage | Business Center |
| Cats OK | Clubhouse |
| Controlled Access | Dogs OK |
| EV Car Charging Stations | Fitness Center |
| Residents Lounge |
Grounds
| Assigned Parking | Basketball Courts |
| Garage Parking | Outdoor Space |
| Storage | Swimming Pool |
Services
| Package Service |
Units, floor plans, amenities, dimensions, details, availability, and prices may be approximate and subject to change. Please contact a community representative for more information.
Policies and fees
Applicants
Applicants
One-time.
Contact Property
REQUIRED FEES
Deposit
One-time. Refund Policy: 100%. Security Deposit.
$500
OPTIONAL FEES
Parking Policy
Garage Parking
Dog Policy
Allowed
Limit2
Cat Policy
Allowed
Limit2
Cat
Cat Fee
One-time. 2 cats max. Refund Policy: Non-refundable.
$500
Cat Rent
Monthly. Refund Policy: Non-refundable.
$50
Dog
Dog Fee
One-time. 2 dogs max. Refund Policy: Non-refundable.
$500
Dog Rent
Monthly. Refund Policy: Non-refundable.
$50
Questions about this property’s policies and fees?
Building details
Property details
| Units | 230 |
|---|
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About The William
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.
Zumper Expert Rating
Our expert rating is based on a weighted average score of property attributes that renters care about most: price, amenities, location, quality, and trust.
9.9
/10
ExcellentWith an impressive overall rating of 9.9 out of 10, The William is one of the top properties in South Riding. It stands out for Price, Amenities, and Location, so residents can expect their monthly rent payments to give them elevated features, an exceptional standard of living, and a phenomenal experience.
Price·10A score that weighs the cost and location of the property, which we calculate by comparing rent prices of recent units to the median price of nearby rentals, adjusting for overall quality and features.
The William offers an excellent balance between price and value. It's priced competitively for its amenities, location, and other key features. Compared to the median price per bedroom in the area, this property is less than, or about the same as, nearby rentals, so residents can expect great value without too many compromises on their desired standard of living.
Amenities·10A score based on the amenities offered at this property compared to other rentals in the area. We consider the quantity, quality, and popularity of features both on site and within the units.
The William stands out as a premier property with an impressive array of amenities and an excellent standard of living. Residents here have access to many of the most popular and desired perks—pets allowed—making this one of the top choices for renters seeking unparalleled comfort and convenience.
Location·10A score based on proximity and ease of access to shops, restaurants, schools, and public transportation while considering the desirability of the area.
The William offers residents unparalleled convenience to popular points of interest, transportation, schools, and more, which provide an elevated quality of life. Communication with management is usually quick and easy, allowing for a more expedited application and renting process, saving you time and money.
Quality·10A score based on what makes the property stand out, such as luxury features, unique offerings, age of the building, and our ability to verify the accuracy of these details.
The William has notable characteristics that give it an edge. It is a verified property that stands out from others nearby as an exceptional choice for renters looking for a specific lifestyle. Offering a combination of prestige, modernity, and tailored living experiences, residents can expect nothing short of excellence at The William.
Trustworthiness·9A score based on the accuracy, completeness, recency, and usefulness of the information provided by this property, so you can trust that what you see is what you get.
The William has gone above and beyond to craft a useful, detailed description, demonstrating transparency and trustworthiness, and giving renters a clear picture of what to expect from the property and its management, so they can make an informed decision about whether the rental meets their needs.
The William is great for:
Property highlights
We compared every listing in the surrounding area to determine which amenities are most common. If a building lacks an amenity that most others in the area have, it is a con. If a building has an amenity most others in the area do not, it is a pro. Similarly, price, schools, and size are calculated relative to the size, price, and distance to schools of the other properties nearby.How The William compares to other nearby properties.
Positives
- Balcony
- Easy access to the outdoors
- Extra storage
- In-unit features
- Fitness center
- The gym is just a few steps away
- Images Available
- There are at least 10 photos of this property
- LEED certified
- Built with sustainable practices
- Package service
- More secure storage for delivery
- Pet friendly
- This property allows pets
- Pool
- Enhanced community features
Considerations
- No in-unit dishwasher
- Dishwashers aren't available
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Rent trends in South Riding
1-bedroom apartments here are priced 2% higher than 1-bedrooms in South Riding.
If you decide to upgrade your space, you can expect 2-bedrooms at The William to be 0% less than the average for similarly sized apartments in South Riding.
3-bedroom apartments at The William cost about 16% more than the average rent price for 3-bedroom apartments in South Riding.
Median rents as of Oct 3 2026.
South Riding
South Riding
| Month | Median Rent |
|---|---|
| September 2025 | $1,095 |
| October 2025 | $1,100 |
| November 2025 | $1,100 |
| December 2025 | $1,100 |
| January 2026 | $1,100 |
| June 2026 | $2,158 |
| July 2026 | $2,161 |
| August 2026 | $2,141 |
| September 2026 | $2,136 |
| October 2026 | $2,138 |
| Month | Median Rent |
|---|---|
| June 2026 | $2,158 |
| July 2026 | $2,161 |
| August 2026 | $2,141 |
| September 2026 | $2,136 |
| October 2026 | $2,138 |
Affordability calculator
Can I afford to live at 43300 Mossimo Sq?
Bedrooms
Rent-to-income ratio
30%
Slide to adjust the percentage of your monthly income you are willing to spend on rent.
The general rule of thumb is to spend around 30% or less of your income on rent.
Recommended income
$85,280/yr
With your selected rent-to-income ratio, you'd ideally want to make $85,280 annually to afford this 1-bedroom median monthly rent price of $2,132.
For more information on rent affordability, visit our rent calculator.
Schools near The William
Liberty Elementary School
25491 riding center dr
south riding, VA, 20152
PK, K-5Public
A
Goshen Post Elementary
24945 lobo dr
aldie, VA, 20105
PK, K-5Public
A
Hovatter Elementary School
41135 collaboration dr
aldie, VA, 20105
1-5Public
Madison's Trust Elementary School
42380 creighton rd
ashburn, VA, 20148
PK, K-5Public
A
Waxpool Elementary School
42560 black angus dr
ashburn, VA, 20148
PK, K-5Public
A
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Internet available near The William
Getting around Chantilly near 43300 Mossimo Sq
Walking
6/10
Some shops and stores are within a few minutes.
Driving
7/10
This area is close to freeways and has adequate parking options.
Cycling
5/10
More spots are within biking distance and some roads are cyclist-friendly.
Transit
3/10
There are a few mass transit options within the area.
Points of interest for 43300 Mossimo Sq, Chantilly
Groceries
9/10
Exceptional variety of groceries within a few minutes' walk
Shopping
5/10
Variety of shops within a short drive
Cafes
6/10
Wide variety of cafés within a short drive, including some within walking distance
Restaurants
7/10
Wide variety of restaurants within a short drive, including some within walking distance
Primary schools
5/10
At least one elementary school within a 20-minute walk
High schools
2/10
At least one high school within a 30-minute walk
Nightlife
2/10
Few or no bars within a short drive
Explore the area around 43300 Mossimo Sq
Giant Food
25050 Riding Plz
Food Lion
43090 Peacock Market Plz
Walmart Supercenter
24635 Dulles Landing Dr
Indian Mart
24630 Dulles Landing Dr
India Spice LLC
24650 Southpoint Dr
Fit Right Kids Shoes
25050 Riding Plz
DICK'S Sporting Goods
24670 Dulles Landing Dr
T.J. Maxx & HomeGoods
24630 Dulles Landing Dr
Ross Dress For Less
24630 Dulles Landing Dr
Walmart Supercenter
24635 Dulles Landing Dr
Tropical Smoothie Cafe
24995 Riding Plz
Duck Donuts
43090 Peacock Market Plz
Starbucks
43114 Peacock Market Plz
Kung Fu Tea
24630 Dulles Landing Dr
Dunkin'
24560 Dulles Landing Dr
Brew Birds
42020 Village Center Plz
Social House Kitchen & Tap
25370 Eastern Marketplace Plz
Haze Hookah Cafe
14513 Route 50
American Tap Room
1 Saarinen Cir
Firkin & Fox
1 Saarinen Cir
sweetFrog
43114 Peacock Market Plz
Walmart Deli
24635 Dulles Landing Dr
Walmart Bakery
24635 Dulles Landing Dr
Tasty Cake Pop
Sweet Petites Bakery
Woolly Mammoth Ter
Playground
Playground
Playground
Playground
Playground
Hissho Sushi
25050 Riding Plz
Subway
25050 Riding Plz
China Wok
25031 Riding Plz
Fords Fish Shack-South Riding
25031 Riding Plz
Manhattan Pizza
25042 Riding Plz
Riding Center Dr / Riding Plaza / McBryde Terr
South Riding, South Riding
Riding Center Drive / McBryde Terrace
South Riding, South Riding
Riding Center Drive / Gunnery Square
South Riding
Riding Center Drive / Gunnery Square
South Riding
Nations Street / Lyon Terrace
South Riding
Washington Dulles International Airport
Metrorail Silver Line, Metrorail Silver Line
Loudoun Gateway
Metrorail Silver Line, Metrorail Silver Line
Ashburn
Metrorail Silver Line, Metrorail Silver Line
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