509 home addition contractors filed 674 home addition permits on homes in the City and County of San Francisco from October 2023 to September 2026; 208 filed one in the last 12 months. The middle filed job value was $230,000. The most active in the last 12 months were D3 Construction (4 permits), Matarozzi/Pelsinger Builders Inc (3) and The Toboni Group (3); busy is not the same as careful. Side by side: permits filed, share finished, license status and permits in the last 12 months for each firm. Pick what you value and the list re-orders.
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Top 5 by home addition permits filed in the last 12 months. This is volume, not quality: a busy firm is not necessarily a careful one.
The 8 ZIP codes with the most home addition permits on homes from October 2023 to September 2026. Each opens permits by trade and the most active firms there.
94114 (80) 94110 (76) 94131 (62) 94116 (61) 94121 (60) 94122 (48) 94112 (45) 94118 (43)
Before you move a slider, the list is in a default order built only from the permit record: how much of each firm’s record is this kind of job (weight 30), how often its permits reached completion (25) and how many permits it filed in the last 12 months (15). Each measure is ranked against the other 509 firms and pulled toward the middle when a record is short; a firm with a matched license problem is listed last.
The order comes from the San Francisco permit file, not from reviews: 208 of 509 home addition contractors filed a permit in the last 12 months. Nobody pays to be listed or to move up, and there are no star ratings or reviews. The sliders and presets change the weights, and the order changes with them. How the records work in San Francisco.
We do not rate contractors. In this page’s default order, which uses only the permit record through Sep 2026, the top 3 are D3 Construction (6 permits), Ren Lei Construction Co (6 permits) and Matarozzi/Pelsinger Builders Inc (5 permits). By permits filed alone, the most active is Ren Lei Construction Co with 6.
509 firms are on the list; the busiest filed 4 home addition permits in the last 12 months and the middle firm filed 1 in the whole file. Line them up on the same public measures: permits filed, share of permits finished, usual filed job value and license status. Pick what matters to you and the list re-orders, for example recent activity if you need someone soon. The order comes from the permit record only, and nobody pays to be listed or to move up.
509 firms filed at least one home addition permit on homes in the City and County of San Francisco from October 2023 to September 2026; 208 of them filed one in the last 12 months.
485 of the 509 home addition contractors on the San Francisco permit file match an active license, 13 match one that is expired, suspended or inactive, and 11 we could not match. A firm we could not match is not proven unlicensed: the match is by company name. Look any firm up by name or license number with CSLB license check; statuses show under each firm’s name above. How to check a contractor's license in California →
Three you can check against this page: “How many home addition permits have you filed in San Francisco?” (the middle firm here filed 1; 208 of 509 filed one in the last 12 months); “What value will you put on the permit?” (the usual filed value here is $230,000); “Will you pull the permit in your company’s name, and when is the final inspection?”. All 10 questions and how to check each →
On this page: 509 firms filed 674 home addition permits from October 2023 to September 2026, and each firm’s name opens its own permit record. Every number comes from San Francisco DBI building permits on one- and two-family homes, with the contractor from the city's permit contacts file. To see one permit itself, search the address or permit number with the San Francisco permit office. How the records work in San Francisco →
We do not rate or collect reviews. Instead each of the 509 home addition contractors here is shown with its permit record: 674 permits, the share finished, usual filed value and license status. Read reviews on other sites and use this page to check them against the record. Reviews vs permit records →
Every number on this page comes from San Francisco DBI building permits on one- and two-family homes, with the contractor from the city's permit contacts file: 509 firms filed 674 home addition permits on homes in the City and County of San Francisco from October 2023 to September 2026, and 208 of them filed one in the last 12 months. The middle firm has 1 permit in the whole file. A short record leaves more uncertainty, and some jobs never require a permit.
The middle recorded permit value is $230,000. That is a filed estimate, not a quote or final bill. See how we compare records.
Most San Francisco home addition permits are filed in September (135 against an average month of 100); November is the quietest (66). When each trade is busiest in San Francisco →