The specs for 1 East 4th Ave:
- 14 floors, 202 ft
- 236 units (26 studios, 51 1BR, 25 2BR)
- 36 of the units will be affordable
- 119,760 sq ft of commercial space
- Parking for 171 cars and 283 bicycles
The site:
https://maps.app.goo.gl/XYjxNAjjBrrxNYSB6
Quote:
Formal Application For the Potential Tallest Building in San Mateo

By: Andrew Nelson 5:30 am on August 4, 2025
Formal permits have been filed for a 14-story mixed-use tower at 1 East 4th Avenue in Downtown San Mateo, San Mateo County. The filing is a crucial step towards adding over two hundred rental units, offices, and retail space into the heart of the city. Mike Field of Mecah Ventures is responsible for the application as the project developer.
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Arc Tec is responsible for the design. Renderings show a visually chaotic podium complex, with stucco-clad residential vernacular on the lower ten floors lifting up a four-story glass-wrapped office. The structure appears especially odd from El Camino and 3rd Avenue, where bare walls abutting adjacent parcels will be prominent. Sidewalk improvements are proposed to create a public courtyard at the corner of El Camino and 4th Avenue, with street-parking for bicycles and planters around the retail space.
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The 0.91-acre property is located at the corner of East 4th Avenue and El Camino Real, close to the city’s retail core and just one block from Central Park. Caltrain is just over ten minutes away on foot, or four minutes by bicycle.
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https://sfyimby.com/2025/08/formal-application-for-the-potential-tallest-building-in-san-mateo.html