3341 Alma St, Palo Alto Ca 94306
Project - Building Permit permit in Palo Alto, issued July 6, 2026. Permit #26BLD-00000-01797.
Submitted
STATUS
July 6, 2026
ISSUED
Permit details
| Permit number | 26BLD-00000-01797 |
| Address | 3341 Alma St, Palo Alto Ca 94306 |
| Permit type | Project - Building Permit |
| Work description | Multi-Fam: Add landing at the east elevation of the building. BLD, PLAN, UF / _R-2 / unknown 1. Project Summary Demolish, grade, frame, and pour a new ground-level concrete patio slab running along the rear foundation wall to safely transition a 14-inch vertical drop from the interior floor to the yard grade[cite: 1]. The system uses a two-tiered, non-continuous design featuring three individual landing blocks built natively over a continuous lower patio footprint[cite: 1]. 2. Dimensions & Structural Specs * Total Base Footprint: 638" (Length) x 76" (Width)[cite: 1]. * Lower Slab Area: Continuous 638" x 40" footprint poured 14 inches below finished floor (-14.00" level)[cite: 1]. * Egress Landings: Three isolated 32" x 36" concrete landing blocks centered in front of the three existing 29-inch wide exterior exit doors, sitting 7 inches below the finished floor (-7.00" level)[cite: 1]. * Riser Heights: Uniform 7-inch steps (0.00" -> -7.00" -> -14.00")[cite: 1]. 3. Execution Guidelines * Prep: Excavate, compact subgrade to 90%, and lay a 2-inch aggregate base. Install waterproofing flashing against the residential wood framing. * Drainage & Framing: Slope formwork at 1/4 inch per linear foot away from the house. * Reinforcement: Lay a grid of #4 rebar on 16-inch centers in the base slab. Tie upper landings to the base using vertical dowels. * Pour & Finish: Pour a minimum 3,000 PSI concrete mix (~5.15 cubic yards ordered)[cite: 1]. Apply a uniform, non-slip light broom finish. |
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