Top-Floor Residential Income
For Sale
$609,000
42874 FIREFLY SONATA TERRACE Unit 403, Ashburn, VA 20148
One-level residence with premium finishes, private balcony, attached garage, elevator access, and extensive active-adult amenities.
Property Size1,712 SF
Price / SF$355.72
Days on Market25
Property Features for 42874 FIREFLY SONATA TERRACE Unit 403
General Information
Standard status
Active
Size
1,712 SF
Total Parking Spaces
2
Elevators
Yes
Property subtype
Penthouse Unit/Flat/Apartment
Additional Details
Utilities to Site
Yes
Multifamily Units
1
Taxes and HOA fees
Annual Taxes
$4,411
Amenities
balcony
laundry room
clubhouse
indoor pool
outdoor pool
pickleball courts
bocce courts
golf simulator
art studio
movie room
fitness center
walking trails
Building Details
Building Size
1,712 SF
Year Built
2023
Listing Agency:
Keller Williams Realty
(703) 568-7340
Listed By:
Victoria J Girdis · License #0225220352
(703) 568-7340
Source:
Kerishull
Added: Jul 30
Changed: Aug 23
Last Checked: Aug 22 at 11:46AM
Displayed information is deemed reliable but is not guaranteed and should be independently verified. All listing content including descriptions, pricing, images are the copyrighted material of Keller Williams Realty
Investment Insights
Based on property information with market context.
Built in 2023, this one-level residential income property offers 3 bedrooms, 2 baths, and 1,712 square feet within a boutique elevator building. The open-concept interior features 9-foot ceilings, extensive windows, a quartz-finished kitchen with herringbone backsplash, soft-close cabinetry, walk-in pantry, and large island. A split-wing layout separates the secondary bedrooms from the primary suite, which includes two oversized walk-in closets and a spa-style bath with frameless glass shower and dual-sink vanity. Fresh paint, plantation shutters, LVP flooring, and a dedicated laundry room with full-size side-by-side appliances complete the interior.
Outdoor and access features include a private south-facing covered balcony, attached 1-car garage G-11 with epoxy flooring, and driveway parking for a second vehicle. The 55+ community includes two clubhouses, indoor and outdoor pools, pickleball and bocce courts, a golf simulator, art studio, movie room, fitness center, and walking trails. The monthly condo fee covers Verizon Fios TV and high-speed internet, water, trash/recycling, clubhouse access, lawn care, and snow removal.
Outdoor and access features include a private south-facing covered balcony, attached 1-car garage G-11 with epoxy flooring, and driveway parking for a second vehicle. The 55+ community includes two clubhouses, indoor and outdoor pools, pickleball and bocce courts, a golf simulator, art studio, movie room, fitness center, and walking trails. The monthly condo fee covers Verizon Fios TV and high-speed internet, water, trash/recycling, clubhouse access, lawn care, and snow removal.
Key Highlights
- 2023‑built top‑floor residence with 3 bedrooms, 2 baths, and 1,712 square feet
- Boutique elevator building with four residences on the top floor
- Kitchen includes quartz countertops, herringbone backsplash, walk‑in pantry, and expansive island
Financial Insights
Estimated NOI and Cap Rate
NOI = area × lease_rate × (100 − vacancy) / 100 × (1 − expense_ratio). Net Operating Income — what the owner takes home each year before mortgage payments and income tax. Effective rent (asking rent minus vacancy losses) minus operating costs (taxes, insurance, maintenance, management).
NOI / Yr
$26,700
Cap rate = NOI / list price × 100. Capitalization rate — annual return on a fully cash purchase, before financing. NOI divided by price. Higher means more income per dollar invested, but usually also more risk or older condition. 5–8% is typical for stabilized commercial property; double digits often signal distressed deals.
Cap Rate
4.38%
Suggested Prices Based on Cap Rates
Cap rates vary significantly by property type, market, and asset quality.
Typical U.S. stable-market ranges:
Multifamily — 4.5% to 6.5% (Class A in primary markets often sub-5%; Class C in secondary markets 6%+)
Industrial / Logistics — 5.0% to 7.0% (compressed heavily in recent years due to e-commerce demand)
Office — 6.5% to 9%+ (wide spread post-2020; CBD Class A vs. suburban Class B varies dramatically)
Retail — 5.5% to 8.5% (grocery-anchored on the low end, unanchored strip centers higher)
Hospitality / Hotels — 7.5% to 10%+ (higher due to operational risk)
Self-Storage — 5.5% to 7.5%
Medical Office — 6.0% to 7.5%
Net Lease (single tenant, credit) — 5.0% to 7.0% depending on tenant credit and lease term
Rules of thumb:
Primary markets (NYC, SF, LA, Boston, DC) trade at lower cap rates than secondary/tertiary markets, often by 100–200 bps (bps, aka basis points; 1 bp = 0.01%).
Class A assets trade ~50–150 bps tighter than Class B, and Class B tighter than Class C.
Cap rates move inversely with price — a lower cap rate means a higher price for the same NOI.
Spread to the 10-year Treasury is a common benchmark; historically 200–400 bps over the 10-year.
Cap Rate 5%
$534,000
$534.0K
Cap Rate 7%
$381,429
$381.4K
Cap Rate 9%
$296,667
$296.7K
Market Conditions
NOI Build-Up for 1,712 SF
Vacancy — income lost from leasable area expected to sit empty during the year, subtracted from gross rent.
EGI (Effective Gross Income) — gross rent minus vacancy losses, the realistic income before paying operating costs.
OpEx (Operating Expenses) — recurring costs to operate the property (property tax, insurance, utilities, maintenance, management); excludes financing and capital improvements.
NOI (Net Operating Income) — income a property generates after operating costs but before financing and taxes.
Gross rent
$52.0K $30.36/SF
− Vacancy
−$3.4K −$2.00/SF
EGI
$48.5K $28.36/SF
− OpEx
−$21.8K −$12.76/SF
NOI
$26.7K $15.60/SF
Area
Loudoun County, VA
Vacancy
6.60%
Lease Rate
$30.36 /SF/Yr
Expense Ratio
45.00%
Simulate Cap Rate and NOI
Suggested Prices Based on Cap Rates
Cap rates vary significantly by property type, market, and asset quality.
Typical U.S. stable-market ranges:
Multifamily — 4.5% to 6.5% (Class A in primary markets often sub-5%; Class C in secondary markets 6%+)
Industrial / Logistics — 5.0% to 7.0% (compressed heavily in recent years due to e-commerce demand)
Office — 6.5% to 9%+ (wide spread post-2020; CBD Class A vs. suburban Class B varies dramatically)
Retail — 5.5% to 8.5% (grocery-anchored on the low end, unanchored strip centers higher)
Hospitality / Hotels — 7.5% to 10%+ (higher due to operational risk)
Self-Storage — 5.5% to 7.5%
Medical Office — 6.0% to 7.5%
Net Lease (single tenant, credit) — 5.0% to 7.0% depending on tenant credit and lease term
Rules of thumb:
Primary markets (NYC, SF, LA, Boston, DC) trade at lower cap rates than secondary/tertiary markets, often by 100–200 bps (bps, aka basis points; 1 bp = 0.01%).
Class A assets trade ~50–150 bps tighter than Class B, and Class B tighter than Class C.
Cap rates move inversely with price — a lower cap rate means a higher price for the same NOI.
Spread to the 10-year Treasury is a common benchmark; historically 200–400 bps over the 10-year.
Cap Rate 5%
$534,000
Cap Rate 7%
$381,429
Cap Rate 9%
$296,667
Alternative Uses
Best Use
Apartment 5plus
$381.4K
$333.8K – $445.0K
NOI $26,700 @ 7.0% cap · market cap 4.38%
Second Best
—
—
no second resolved use
Theoretical Best
Specialty Retail
$536.5K
$469.5K – $626.0K
NOI $37,557 @ 7.0% cap · market cap 6.17%
Zoning and permitted uses should be independently verified with authorities.
Property Analytics
Property Profile
Current Use
Lease Details
1
Residential units
Yes
Utilities to site
Location Intelligence
Trade Area within ½ mile
540
Businesses Nearby
Explore this area
Business Placement
Demographics for 20148, VA
61,793
Population
20,413
Households
3
Avg Household Size
34
Median Age
77%
College-Educated
97%
High-School Grad
19.4 sq mi
ZIP Area
3,185
Density / Sq Mi
$233,502
Median Household Income
$119,027
Median Earnings
$2,647
Median Rent
$843,800
Median Home Value
Questions? Ask Rey
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Frequently Asked Questions
What type of property is this?
Residential income property - One-level residence with premium finishes, private balcony, attached garage, elevator access, and extensive active-adult amenities.
Where is this residential income property located?
The property is located at 42874 FIREFLY SONATA TERRACE Unit 403 Ashburn, VA.
What is the asking price?
The asking price for this property is $609,000.
What are key features of this property?
This property features: 2023‑built top‑floor residence with 3 bedrooms, 2 baths, and 1,712 square feet; Boutique elevator building with four residences on the top floor; Kitchen includes quartz countertops, herringbone backsplash, walk‑in pantry, and expansive island
