Seller's Agent in 2026
David Costello
Compass
(415) 660-9955
10 in this area
51 Total Sales
1515 Union St Unit 4B San Francisco, CA 94123
Cow Hollow Neighborhood
2
Beds
2
Baths
1,247
Sq Ft
0.38
Acre Lot
Highlights
- Views of Golden Gate Bridge
- New Construction
- Contemporary Architecture
- Sherman Elementary Rated A-
- 0.38 Acre Lot
- 4-minute walk to Allyne Park
About This Home
As of June 2026Experience elevated living in Residence 4B at Union House: currently the only 2-bedroom, 2-bath luxury condominium available for sale in one of San Francisco's most coveted boutique buildings. Ideally located at the crossroads of Pacific Heights, Cow Hollow, Russian Hill, and the Marina, this refined 1,250 sq ft unit combines elegant design with modern comfort. Filled with natural light, the home features soaring ceilings and oversized picture-frame windows that showcase sweeping city views including direct views of the Golden Gate Bridge and Palace of Fine Arts. European wide-plank oak flooring, custom millwork, and premium finishes create an atmosphere of timeless sophistication. The gourmet kitchen impresses with Miele appliances, marble countertops, and a generous island that opens to a spacious family room perfect for entertaining. The expansive primary suite boasts a spa-like bath with double vanities and a large walk-in closet. A second bedroom, stylish guest bath, laundry room, and ample storage complete the offering. Built in 2020 with only 41 residences and a full time lobby attendant, Union House is a rare opportunity for luxurious city living in an unbeatable location.
Property Details
Home Type
- Condominium
Year Built
- Built in 2020 | New Construction
Lot Details
- West Facing Home
HOA Fees
- $2,088 Monthly HOA Fees
Property Views
- Bay
- Golden Gate Bridge
- San Francisco
- Panoramic
- City Lights
Home Design
- Contemporary Architecture
- Modern Architecture
- Flat Roof Shape
- Concrete Foundation
- Slab Foundation
- Composition Roof
- Metal Siding
- Concrete Perimeter Foundation
Interior Spaces
- 1,247 Sq Ft Home
- 1-Story Property
- Family Room
- Living Room
- Storage Room
- Laundry Room
- Video Cameras
Kitchen
- Ice Maker
- Dishwasher
- Wine Refrigerator
- Disposal
Flooring
- Wood
- Marble
Bedrooms and Bathrooms
- 2 Bedrooms
- 2 Full Bathrooms
- Double Vanity
- Bathtub
Parking
- Attached Garage
- Enclosed Parking
- Garage Door Opener
Eco-Friendly Details
- ENERGY STAR Qualified Appliances
- Energy-Efficient HVAC
Utilities
- Central Heating
- Underground Utilities
- 220 Volts
- Gas Water Heater
- Internet Available
- Cable TV Available
Community Details
Overview
- Association fees include common areas, door person, earthquake insurance, elevator, insurance on structure, maintenance structure, management, roof, security, sewer, trash, water
- 41 Units
- Union House HOA
- Built by DM Development
Pet Policy
- Dogs and Cats Allowed
Security
- Fire and Smoke Detector
- Fire Suppression System
Ownership History
We collect this data history from publicly available records. To have your information removed, we recommend requesting removal directly through your county’s website.
Date
Name
Owned For
Owner Type
Purchase Details
Listed on
Apr 28, 2026
Closed on
Jun 18, 2026
Sold by
Bought by
Seller's Agent
David Costello
Compass
Buyer's Agent
Eric Altree
Compass
List Price
$2,650,000
Sold Price
$2,675,000
Premium/Discount to List
$25,000
0.94%
Views
15
Home Financials for this Owner
Home Financials are based on the most recent Mortgage that was taken out on this home.
Avg. Annual Appreciation
-18.38%
Purchase Details
Closed on
Jun 24, 2020
Sold by
Bought by
Home Financials for this Owner
Home Financials are based on the most recent Mortgage that was taken out on this home.
Original Mortgage
$1,540,000
Interest Rate
0.044%
Mortgage Type
New Conventional
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Home Values in the Area
Average Home Value in this Area
Purchase History
We collect this data history from publicly available records. To have your information removed, we recommend requesting removal directly through your county’s website.
| Date | Type | Sale Price | Title Company |
|---|---|---|---|
| Grant Deed | -- | First American Title | |
| Grant Deed | $2,200,000 | Chicago Title |
Source: Public Records
Mortgage History
We collect this data history from publicly available records. To have your information removed, we recommend requesting removal directly through your county’s website.
| Date | Status | Loan Amount | Loan Type |
|---|---|---|---|
| Previous Owner | $1,540,000 | New Conventional |
Source: Public Records
Property History
We collect this data history from publicly available records. To have your information removed, we recommend requesting removal directly through your county’s website.
| Date | Event | Price | List to Sale | Price per Sq Ft | Prior Sale |
|---|---|---|---|---|---|
| 06/22/2026 06/22/26 | Sold | $2,675,000 | +0.9% | $2,145 / Sq Ft | |
| 06/03/2026 06/03/26 | Pending | -- | -- | -- | |
| 04/28/2026 04/28/26 | For Sale | $2,650,000 | +20.5% | $2,125 / Sq Ft | |
| 04/07/2023 04/07/23 | Sold | $2,200,000 | -10.2% | $1,764 / Sq Ft | View Prior Sale |
| 03/08/2023 03/08/23 | Pending | -- | -- | -- | |
| 01/07/2023 01/07/23 | For Sale | $2,449,000 | -- | $1,964 / Sq Ft |
Source: San Francisco Association of REALTORS®
Tax History
We collect this data history from publicly available records. To have your information removed, we recommend requesting removal directly through your county’s website.
| Year | Tax Paid | Tax Assessment Tax Assessment Total Assessment is a certain percentage of the fair market value that is determined by local assessors to be the total taxable value of land and additions on the property. | Land | Improvement |
|---|---|---|---|---|
| 2025 | $27,829 | $2,288,880 | $1,373,328 | $915,552 |
| 2024 | $26,994 | $2,244,000 | $1,346,400 | $897,600 |
| 2023 | $29,983 | $2,480,860 | $264,375 | $2,216,485 |
| 2022 | $29,426 | $2,432,217 | $259,192 | $2,173,025 |
| 2021 | $28,910 | $2,384,527 | $254,110 | $2,130,417 |
Source: Public Records
Agents Affiliated with this Home
-
David Costello
-
Eric Altree
Buyer's Agent in 2026
Eric Altree
Compass
(415) 218-4047
3 in this area
73 Total Sales
-
Andres Ardila
Seller's Agent in 2023
Andres Ardila
Compass
(415) 608-1003
11 in this area
67 Total Sales
Map
Source: San Francisco Association of REALTORS®
MLS Number: 426125930
APN: 0546-085
Disclaimer: Certain information contained herein is derived from information provided by parties other than Homes.com. All information provided is deemed reliable, but is not guaranteed to be accurate and should be independently verified.
IDX information is provided exclusively for 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 is deemed reliable but not guaranteed.
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