| Building name | Diamond National Building |
| Primary address | Diamond National Building - 733 3rd Avenue |
| Secondary address | 733 A 3rd Ave |
| Neighborhood | Turtle Bay |
| Zip code | 10017 |
| Borough | Manhattan |
| Block & lot | 01319-0047 |
View detailed information on past sales, title documents and property taxes, including the assessed market value, in their dedicated tabs.
| Purchase date | 12/15/2025 |
| Purchase price | $5,000,000 |
| Tax class | Register |
| Estimated property tax | $5,965,510 |
| Lot sq. ft. | 25,768 |
| Lot dimensions | |
| Property type | Office Only with or without Commercial - 20 Stories or More (O4)
|
| Building sqft | 405,399 |
| Building dimensions |
| Buildings on lot | 1 |
| Stories | 23 |
| Year built | 1960 |
| Year last altered | 2004 |
| Construction type | Register |
| School district | 2 |
| Community district | 6 |
| Closest police station | 0.26 Miles |
| Closest fire station | 0.27 Miles |
View more neighborhood information such as transportation, nearby schools and risk designations in the dedicated tab.
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You will find all alternate addresses for the property in this section.
This Office Only with or without Commercial - 20 Stories or More (O4) located at Diamond National Building - 733 3rd Avenue, New York, NY 10017 has a total of 405,399 square feet and a current price per square foot of $12.
What is the year built & the current market value of Diamond National Building - 733 3rd Avenue, New York, NY 10017?Diamond National Building - 733 3rd Avenue, New York, NY 10017 was built in 1960 and has a current tax assessor's market value of $120,812,000.
How many commercial spaces does this building have?This building has 20 commercial spaces available for lease. There are 9 active listings at this address.
View property contacts like owners, building management, representatives from permits and tenants with a free account. For LLC-owned properties, access manually researched real owners and phone numbers.
| Listing type | For Lease |
|---|---|
| Last updated | 04/22/2026 |
| Lot size | 0.59 Acre |
| Suite name | Space type | Lease rate | Available space | Brokers |
|---|---|---|---|---|
| #1050 | General Office | Listing price not available | 7,190 | Bailey Caliban Eric Engelhardt Sayo Kamara |
| 2nd Floor | General Office | Listing price not available | 9,789 | Bailey Caliban Karen Rose Eric Engelhardt Sayo Kamara |
| 3rd Floor | General Office | Listing price not available | 14,404 | Bailey Caliban Karen Rose Eric Engelhardt Sayo Kamara |
| 17th Floor | General Office | Listing price not available | 1,781 | Bailey Caliban Karen Rose Eric Engelhardt Sayo Kamara |
| 5th Floor | General Office | Listing price not available | 15,522 | Bailey Caliban Karen Rose Eric Engelhardt Sayo Kamara |
| 24th Floor | General Office | Listing price not available | 7,442 | Bailey Caliban Karen Rose Eric Engelhardt Sayo Kamara |
| 4th Floor | General Office | Listing price not available | 29,935 | Bailey Caliban Karen Rose Eric Engelhardt Sayo Kamara |
| 23rd Floor | General Office | Listing price not available | 7,442 | Bailey Caliban Karen Rose Eric Engelhardt Sayo Kamara |
| Ground Floor | Retail | Listing price not available | 4,006 | Bailey Caliban Eric Engelhardt Karen Rose Sayo Kamara |
Create a free account to view the complete sales history for 733 3rd Avenue, New York, including title documents, transfer conditions, mortgages, liens, and pre-foreclosures.
To view the complete history of deeds, mortgages, assignments of leases and rents, and more, sign up for free. Available data goes back to 1966.
R: Recorded date
D: Document date
Access detailed property tax data for Diamond National Building - Diamond National Building - 733 3rd Avenue, New York, NY 10017. Tax information included: property tax, market value and assessed value, exemptions, abatements, and assessment history.
| Tax year: | 2025-2026 |
| Property tax: | $5,897,559 |
| Estimated property tax: | $5,965,510 |
| Tax assessor's market value: | $120,812,000 |
| Assessed value: | $54,365,400 |
Here's the assessment & property tax history for 733 3rd Avenue, New York, including the evolution of the total tax rate and corresponding property tax.
| Year | Market value | Assessed value | Taxable | Tax rate % | Base tax | Property tax | Year over year change |
|---|---|---|---|---|---|---|---|
| 2025/26 | $120,812,000 | $54,365,400 | $54,365,400 | 10.848% | $5,897,559 | $5,897,559 | +1.78% |
| 2024/25 | $119,642,000 | $53,838,900 | $53,838,900 | 10.762% | $5,794,142 | $5,794,142 | -2.40% |
| 2023/24 | $124,551,000 | $56,047,950 | $56,047,950 | 10.592% | $5,936,599 | $5,936,599 | -8.29% |
| 2022/23 | $135,123,000 | $60,805,350 | $60,805,350 | 10.646% | $6,473,338 | $6,473,338 | -1.92% |
| 2021/22 | $138,178,000 | $62,180,100 | $61,367,310 | 10.755% | $6,600,054 | $6,600,054 | +0.60% |
The complete history of permits filed for 733 3rd Avenue, New York, including new construction or demolition permits, plus any work pertaining to plumbing, heating and sprinkler systems is available with a free account. Available data goes back to 1990.
Access a detailed real estate market overview of Manhattan so you can assess current trends, property values, types of properties sold and transaction volume. View the median price per sqft in Manhattan and compare it to other boroughs in New York City.
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| FEMA flood zone(s): | X (See more on map) |
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Distance to Subway
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| Closest station | Lexington Ave & 43rd St at SE Corner | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Station lines | GS-4-5-6-7 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Distance (miles) | 0.178 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
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Bus Routes
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| Name | 3 Av/E 45 St | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Line | M101 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Distance (miles) | 0.058 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
Here are the neighbors for Diamond National Building - Diamond National Building - 733 3rd Avenue, New York, NY 10017.
| Address | Square feet | Purchase date | Purchase price |
|---|---|---|---|
| 729 3rd Ave, New York | 2,380 | 03/05/1997 | |
| 215 E 45th St, New York | 12/21/2023 | $2 | |
| 723 3rd Ave, New York | 3,120 | 07/23/2002 | |
| 203 E 45th St, New York | 4,000 | 01/07/2008 | $425,000 |
| 222 E 46th St, New York | 19,000 | 12/15/2025 | |
| 725 3rd Ave, New York | 3,600 | 12/30/2021 | $10 |
| 224 E 47th St, New York | 118,442 | ||
| 241 E 46th St, New York | 6,572 | 07/14/2006 | |
| 240 E 47th St, New York | 360,110 | ||
| 244 E 46th St, New York | 9,145 | 10/27/2016 | $7,250,000 |
| 847 2nd Ave, New York | 70,592 | 04/08/2022 | $41,500,000 |
| 213 E 45th St, New York | 4,519 | 03/09/2005 | $2,900,000 |
| 234 E 46th St, New York | 82,829 | 04/25/2023 | $13,150,573 |
| 231 E 46th St, New York | 8,100 | 01/18/1990 | |
| 235 E 46th St, New York | 49,914 | 07/14/2006 | |
| 721 3rd Ave, New York | 3,600 | 06/13/2011 | $5,100,000 |
| 843 2nd Ave, New York | 5,084 | 10/31/2001 | |
| 240 E 46th St, New York | 60,900 | ||
| 219 E 46th St, New York | 12,983 | 02/20/1992 |
