Historic Office Building
For Lease
Contact for pricing
510-530 Walnut St, Philadelphia, PA 19106
Three-building office complex with polished marble floors, expansive window lines, and on-site banking services.
Space Size19,032 SF
Days on Market364
Property Features for 510-530 Walnut St
General Information
Standard status
Active
Size
19,032 SF
Property subtype
OFFICE
Amenities
on-site banking services
concierge and security station
Building Details
Tenancy
Multi
Spaces For Lease
at 510-530 Walnut St Contact us- Floor
- 7
- Size
- 19,032 SF
- Type
- OFFICE
- Rate
- Contact for pricing
- Lease Type
- NET_NNN
- Availability
- AVAILABLE, 30 Days
- Sublease
- No
The Washington
- The One Washington Square (formerly Penn Mutual Towers) are established landmarks...
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Listing Agency:
Cushman & Wakefield | Philadelphia
(215) 963-4000
Listed By:
Jack Meyers
(215) 963-4054
Source:
Moodyscre
Added: Sep 17, 2025
Changed: Sep 14
Last Checked: Sep 14 at 10:04AM
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 Cushman & Wakefield | Philadelphia
Investment Insights
Based on property information with market context.
The One Washington Square is a landmark three-building office complex at 510-530 Walnut St, consisting of towers constructed in 1914, 1930, and 1972. The property features polished marble floors, commanding columns, and intricate plaster ceilings above a walnut concierge and security station. First-class renovations are noted throughout the towers, along with expansive window lines designed to bring natural light into office spaces and support city views.
The complex is centered within Philadelphia’s historic and business districts and is described as overlooking Independence Square. It is positioned close to Federal Court, City Hall, and the Central Business District, with hotels, fine restaurants, shops, theaters, medical centers, and galleries nearby. On-site banking services are available, and four garages are located within a three-block radius.
As offered for rent, the space availability is listed as “Future.”
The complex is centered within Philadelphia’s historic and business districts and is described as overlooking Independence Square. It is positioned close to Federal Court, City Hall, and the Central Business District, with hotels, fine restaurants, shops, theaters, medical centers, and galleries nearby. On-site banking services are available, and four garages are located within a three-block radius.
As offered for rent, the space availability is listed as “Future.”
Key Highlights
- Three‑building office complex with towers constructed in 1914, 1930, and 1972
- Polished marble floors, commanding columns, and intricate plaster ceilings above the walnut concierge and security station
- First‑class renovations throughout both towers with expansive window lines for natural light and city views
Property Analytics
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Current Use
Lease Details
Multi-tenant
Tenancy
NNN (Triple Net)
Lease Type
Location Intelligence
Trade Area within ½ mile
2,527
Businesses Nearby
Explore this area
Business Placement
Demographics for 19106, PA
15,190
Population
9,913
Households
1.5
Avg Household Size
39
Median Age
80%
College-Educated
96%
High-School Grad
0.9 sq mi
ZIP Area
16,878
Density / Sq Mi
$129,779
Median Household Income
$93,953
Median Earnings
$2,219
Median Rent
$528,700
Median Home Value
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Market
Vacancy Rate% for Office in Philadelphia, PA
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Frequently Asked Questions
What type of property is this?
Office building - Three-building office complex with polished marble floors, expansive window lines, and on-site banking services.
Where is this office building located?
The property is located at 510-530 Walnut St Philadelphia, PA.
What are key features of this property?
This property features: Three‑building office complex with towers constructed in 1914, 1930, and 1972; Polished marble floors, commanding columns, and intricate plaster ceilings above the walnut concierge and security station; First‑class renovations throughout both towers with expansive window lines for natural light and city views
