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Exceptional end-unit Delanie model offering over 2,700 square feet of beautifully designed living space, abundant natural light, and panoramic views of trees and open space. This spacious 3-bedroom, 2.5-bath home combines the feel and function of a townhome with the low-maintenance convenience of condominium ownership. The open main level is designed for both everyday living and entertaining, with beautiful wide-plank hardwood flooring and oversized windows taking full advantage of the end-unit setting and treed views. At the heart of the home is the stunning gourmet kitchen featuring a huge quartz-topped island, stainless steel appliances, abundant cabinetry, and a large walk-in pantry. The kitchen flows seamlessly into the generous dining and living areas, along with flexible space ideal for a home office or playroom. Step outside to the main-level balcony for yet another place to enjoy the peaceful surroundings. Upstairs, the spacious primary suite features a large walk-in closet and luxurious ensuite bath with dual-sink vanity and oversized shower. Two additional bedrooms, a full hall bath, conveniently located laundry room, and versatile loft/sitting area provide exceptional flexibility. And then there is the rooftop terrace—an impressive additional outdoor living space perfect for entertaining, relaxing under the open sky, or simply enjoying the views. An attached one-car garage and private driveway add everyday convenience. Enjoy the extensive amenities of Carlisle at Loudoun Valley, including pools, fitness facilities, clubhouse, walking trails, and playgrounds, along with a location convenient to shopping, dining, Dulles International Airport, major commuter routes, and approximately 5 miles to Silver Line Metro. A rare combination of generous interior space, multiple outdoor living areas, beautiful views, and low-maintenance living in the heart of Ashburn.

Highlights

  • Residential
  • Condominium
  • Built in 2020
  • $115/mo HOA
  • 1 Car Garage
  • 49 days on Market

  • Bedrooms
    3
  • Bathrooms
    2 full · 2 half
  • Year Built
    2020
  • Architectural Style
    Contemporary
  • Foundation
    Other
  • Garage Spaces
    1.0
  • Parking Features
    Driveway, Attached, Asphalt, Garage
  • Living Area
    2768.0
  • Interior Features
    High Ceilings
  • Appliances
    Dryer, Dishwasher, Microwave, Refrigerator, Washer, Disposal, Cooktop, Oven, Gas Water Heater, Ice Maker
  • Pool Features
    Community
  • Cooling
    Central Air, Electric
  • Heating
    Forced Air, Natural Gas

  • Lot Features
    Wooded, Cleared, Corner Lot
  • View
    Trees/Woods, Garden, Scenic
  • Utilities
    Sewer Available, Electricity Available, Water Available, Natural Gas Available
  • Water
    Public

  • County
    Loudoun
  • City
    Ashburn
  • Neighborhood
    LOUDOUN VALLEY CARLISLE
  • Zip Code
    20148
  • High School
    ROCK RIDGE
  • Middle School
    STONE HILL
  • Elementary School
    ROSA LEE CARTER

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Frequently Asked Questions

How do I schedule a tour of 43209 Mongold Sq?

We can make that happen quickly. Click Tour This Home and we'll connect you directly with our vetted local partner to schedule your visit to 43209 Mongold Sq.

They know residentials in the area well and can give you the guidance you need to buy with confidence.

How do I get more information about 43209 Mongold Sq?

Click Ask a Question to talk with our team. You already know it is a 3 bed, 2 bath, listed for $649,900. We can talk through recent upgrades, potential seller motivation, how this condominium compares to others in Ashburn, and can even get you in to see the property quickly.

How do I get a virtual tour of 43209 Mongold Sq?

Yes! A virtual tour is available for 43209 Mongold Sq. Click here to view the full walkthrough and explore every room at your own pace. If you would like a guided virtual showing or have questions along the way, we can connect you with our local expert to walk you through it live.

How much is the monthly mortgage payment for 43209 Mongold Sq?

With a 20% down payment and a 30-year fixed loan at an illustrative 7.25% rate, the ez Mortgage Calculator estimates the monthly payment for 43209 Mongold Sq at around $4,137. This includes estimated property taxes and insurance.

Want to see how this changes with different down payments or interest rates? Jump to the calculator to run the numbers and fine-tune your plan.

How do I get pre-approved to buy 43209 Mongold Sq?

Stand out in a competitive market by getting pre-approved today. Our quick and private pre-approval process helps you understand your true buying power—no credit pull required to explore all of your options.

Or, let us connect you with our preferred local lender in Loudoun County. They will give you all of your available financing options, based on your specific situation and what is available to you.

Can I negotiate the asking price for 43209 Mongold Sq?

In most cases, yes. Whether 43209 Mongold Sq is priced competitively or not, your best offer depends on your personal situation, the seller's timeline, and recent activity in Ashburn's market. Our preferred local partner will help you craft a strategy—factoring in comparable properties that have sold, timing, and deal structure—to make a smart, strong offer. Click here to ask about negotiation opportunities.

How do I make an offer on 43209 Mongold Sq?

We can handle that for you. Our preferred local agent specializes in residentials in Ashburn and can guide you through every step of the offer process.

You need an expert who is looking out for your best interests. From market valuation to contingencies and timing, they'll help you present a compelling offer that fits your goals. Click Ask a Question to get started today.

What is the price per square foot for this home?

This home is listed at $649,900 with 2,768 sqft of space—that comes out to approximately $235 per square foot.

How long has this property been on the market?

43209 Mongold Sq was listed on September 25, 2026, which means it's been on the market for 49 days.

Want to keep tabs on it? Click the ♥ to favorite this home and get notified of price drops or changes.

When was this house built?

This home was built in 2020, making it approximately 6 years old.

What schools are assigned to this property?

Based on MLS info, this home is zoned for:

  • Elementary: ROSA LEE CARTER
  • Middle: STONE HILL
  • High: ROCK RIDGE

Want to see how these schools compare? Check out our Loudoun County School Guide to see ratings, reviews, and more for the schools in the area.

What are the property taxes for 43209 Mongold Sq?

The most recent public record shows annual property taxes for 43209 Mongold Sq were approximately $5,266. This may change with reassessment or exemptions. Our local partner can verify current tax amounts and help you estimate future costs based on your situation.

Is there an HOA fee for this property, and what does it cover?

This home has an HOA fee of $115 paid monthly.

This covers access to community features including: Playground, Fitness Center, Tennis Court(s), Basketball Court, Jogging Path, Recreation Facilities.

Is 43209 Mongold Sq still available for sale?

Yes, this home is still available! Click the ♥ to favorite it so you don't miss any changes—or ask our local expert to schedule a time to see it in person.

Source: ez Home Search, MLS Data

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Listing information provided exclusively for consumers' personal, non-commercial use and may not be used for any purpose other than to identify prospective properties consumers may be interested in purchasing. Information deemed reliable but not guaranteed by the MLS. Copyright 2026, Bright. All rights reserved.

Last Updated: November 13, 2026 at 09:36PM | Source: Bright | MLS#: VALO2136522