City of San Diego building-permit timing visualization. Source rows were selected under the pinned issued-record window from January 1, 2022 through July 21, 2026; those selection fields are not the bar clock. Source filtering kept only Combination Building Permit and Building Permit approval types, excluded final-only and mobile-home installation records, kept the first common-filtered row for each permit ID, and then applied a manual permit-ID exclusion list. The timing bars include 468 of 470 reviewed ADUs, 311 of 311 reviewed tract homes, and 72 of 82 reviewed single-family permits. 12 out-of-scope permit records were excluded. 6 timed records carry source chronology warnings; their exact application-opened and issued dates remain included. Every candidate permit's description was reviewed; alterations, tenant improvements, and non-single-family construction were excluded. Each bar measures from the building application opening to the permit's first issuance. Separate entitlement, subdivision, grading, and map records are outside that clock. Inspections and all other post-issuance events are excluded. The ADU lane began with a 500-record sample from a 3,995-record source pool; the tract-home and single-family lanes began with their full reviewed source populations. Of the 470 reviewed ADU permits, 162—about 35 percent—are conversions of existing structures such as garages. The tract lane counts 311 permits across 26 projects, not 311 separate projects; one project contributes 73 permits. For 62 OpenDSD permits, timing uses official project-level point dates rather than event histories; 37 share 124 days and 25 share 148 days. Median bar timing was 227 days for one new ADU, 324 days for tract homes, and 429 days for one-off new detached single-family permits. The middle half spanned 136 to 391 days for one new ADU, 148 to 468 days for tract homes, and 302 to 638 days for one-off new detached single-family permits. The department chapters use a separate review sample, retaining 439 of 500 ADU permits; its application-opened-to-first-issued median is 282 days, versus 226.5 days for the 468-permit timing lane. Only 37 permits overlap, and the department sample includes multi-ADU projects. Review-round distribution among 439 issued new-ADU permits in the separately enriched, description-reviewed sample of 500 source records: 2 rounds: 65 permits; 3 rounds: 144 permits; 4 rounds: 101 permits; 5 rounds: 70 permits; 6 rounds: 33 permits; 7 rounds: 14 permits; 8 rounds: 10 permits; 9 rounds: 2 permits. The median was 4 inferred rounds, and 230 permits (52%) reached 4 or more. A round is inferred as 1 plus the largest number of “Recheck Required” or “Resubmittal Required” events recorded for any one discipline. It is not a count of complete plan-set submissions. These issued permits do not estimate outcomes for every application or the share that eventually issues. These 439 round inferences use Accela review histories only; OpenDSD submission semantics are not mixed into the measure. Representative project PRJ-1070809 (permit PMT-3179320) took 223 days from building application opening to first issuance, 4 days from the 227-day ADU median. It ranks 10 by absolute distance from that median among 468 timed ADUs. The public project record opened September 8, 2022 and first issued April 19, 2023. Its main timeline shows 10 milestones: Submitted day 0, Reviews began day 33, Corrections day 56, Resubmitted day 70, Resubmission 2 day 103, Resubmission 3 day 187, Final submission day 188, Final plans signed off day 195, Approved day 214, Issued day 223. For the example project the City took 105 days and the Builder 118 days. 81 days between the 2nd Corrections from the City and 3rd Submission by the Builder drove the timeline. Five recorded builder-response windows ran from day 56 to 70, from day 90 to 103, from day 106 to 187, from day 210 to 211, from day 214 to 223, totaling 118 builder days. The remaining 105 days are City days. These are workflow-status windows, not measures of active work, fault, or exclusive possession. Status dates show recorded workflow windows, not active work, fault, or exclusive physical possession. Response windows may include intake or status-update lag. The final-payment window counts as builder-held. Other elapsed time may include City review and processing, unrecorded applicant activity, payment, weekends, and holidays. Final-version and department-level events are not treated as project-level custody switches. Across the reviewed 439-permit department sample, permit share, signed-off-pair count, and median In Progress-to-Signed Off timing were Combined review 100 percent, 439 pairs, and 117 days; Addressing 100 percent, 433 pairs, and 35 days; Planning review 97 percent, 426 pairs, and 96 days; Engineering building review 87 percent, 379 pairs, and 115 days; Historic review 75 percent, 327 pairs, and 15 days; Structural review 75 percent, 331 pairs, and 160 days; Landscape review 60 percent, 255 pairs, and 77 days; Facilities financing review 27 percent, 116 pairs, and 85 days; Housing Commission review 15 percent, 66 pairs, and 22 days; Fire plan review 13 percent, 54 pairs, and 83 days; Electrical review 6 percent, 28 pairs, and 245 days; Mechanical review 6 percent, 27 pairs, and 343 days. Department ridges show 12 of 19 measured review tracks; Zoning Review, Floodplains, Geology, Fire Suppression, Asset Marketing, Noise review, Code enforcement review are omitted. These issued-only groups do not estimate how long every application takes or the share that eventually issues. The project destination is /sandbox.

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