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Public-source data on the data desk

Schedule questions · 448 answers · 2688 total in the reference desk

Timeline & Phases

What influences sequencing from early study through closeout.

Four separate things decide the timeline

State baseline reviewed September 26, 2026. Local procedures, exceptions and parcel conditions still apply.

The statutory review clock

After an ADU application is submitted, the local agency must say in writing within 15 business days whether it is complete, and generally approve or deny a complete application within 60 days (Gov. Code § 66317). The clock measures agency review of a complete application — not design, corrections, utility work or construction.

Gov. Code § 66317 →

Applicant corrections

If the agency finds the application incomplete or issues corrections, the time the applicant's team spends revising drawings and resubmitting is outside the agency's clock. Complete, coordinated drawings are the part of the schedule the owner's team controls most.

Permit sequence guide →

Utility work

Water, sewer, electric and gas connections are reviewed and scheduled by the utility or agency that owns each system, sometimes on separate applications. Their timing is not set by the ADU review clock; ask each provider what it needs and when.

Utility connection guide →

Construction dependencies

Once a permit is issued, duration depends on scope, site conditions, material lead times, inspections and any correction notices in the field. No general duration applies to every property; a schedule should be built from the actual scope.

Build a project brief →

Direct answer

What actually controls an ADU or remodel timeline

Is there a legal review deadline for ADU permits?

Yes. California requires a local agency to approve or deny a complete ADU permit application within 60 days (Gov. Code §66317). The clock starts only when the application is complete; correction rounds, utility work and inspections are outside it.

Source: California HCD — Accessory Dwelling Units

Does weather change the construction schedule?

It can affect concrete pours, roofing and excavation. The planning timeline flags days with rain chance of 40%+, wind of 20 mph+ or heat of 90°F+ as questions to ask your builder — not as a guaranteed work window.

City and service reference

  1. How long can a seismic retrofit take in Santa Monica?
    There is no responsible citywide duration. Design decisions, consultant coordination, agency review, procurement, site conditions and construction scope all affect timing.
  2. How should a Santa Monica seismic retrofit schedule be planned?
    Build the schedule around documented milestones, agency dependencies, owner decisions and material lead times, then update it as project information becomes more certain.
  3. How long can a hillside project take in Santa Monica?
    There is no responsible citywide duration. Design decisions, consultant coordination, agency review, procurement, site conditions and construction scope all affect timing.
  4. How should a Santa Monica hillside project schedule be planned?
    Build the schedule around documented milestones, agency dependencies, owner decisions and material lead times, then update it as project information becomes more certain.
  5. How long can a ADU take in Pasadena?
    There is no responsible citywide duration. Design decisions, consultant coordination, agency review, procurement, site conditions and construction scope all affect timing.
  6. How should a Pasadena ADU schedule be planned?
    Build the schedule around documented milestones, agency dependencies, owner decisions and material lead times, then update it as project information becomes more certain.
  7. How long can a garage conversion take in Pasadena?
    There is no responsible citywide duration. Design decisions, consultant coordination, agency review, procurement, site conditions and construction scope all affect timing.
  8. How should a Pasadena garage conversion schedule be planned?
    Build the schedule around documented milestones, agency dependencies, owner decisions and material lead times, then update it as project information becomes more certain.
  9. How long can a JADU take in Pasadena?
    There is no responsible citywide duration. Design decisions, consultant coordination, agency review, procurement, site conditions and construction scope all affect timing.
  10. How should a Pasadena JADU schedule be planned?
    Build the schedule around documented milestones, agency dependencies, owner decisions and material lead times, then update it as project information becomes more certain.
  11. How long can a home addition take in Pasadena?
    There is no responsible citywide duration. Design decisions, consultant coordination, agency review, procurement, site conditions and construction scope all affect timing.
  12. How should a Pasadena home addition schedule be planned?
    Build the schedule around documented milestones, agency dependencies, owner decisions and material lead times, then update it as project information becomes more certain.
  13. How long can a kitchen remodel take in Pasadena?
    There is no responsible citywide duration. Design decisions, consultant coordination, agency review, procurement, site conditions and construction scope all affect timing.
  14. How should a Pasadena kitchen remodel schedule be planned?
    Build the schedule around documented milestones, agency dependencies, owner decisions and material lead times, then update it as project information becomes more certain.
  15. How long can a bathroom remodel take in Pasadena?
    There is no responsible citywide duration. Design decisions, consultant coordination, agency review, procurement, site conditions and construction scope all affect timing.
  16. How should a Pasadena bathroom remodel schedule be planned?
    Build the schedule around documented milestones, agency dependencies, owner decisions and material lead times, then update it as project information becomes more certain.
  17. How long can a whole-home remodel take in Pasadena?
    There is no responsible citywide duration. Design decisions, consultant coordination, agency review, procurement, site conditions and construction scope all affect timing.
  18. How should a Pasadena whole-home remodel schedule be planned?
    Build the schedule around documented milestones, agency dependencies, owner decisions and material lead times, then update it as project information becomes more certain.
  19. How long can a roofing project take in Pasadena?
    There is no responsible citywide duration. Design decisions, consultant coordination, agency review, procurement, site conditions and construction scope all affect timing.
  20. How should a Pasadena roofing project schedule be planned?
    Build the schedule around documented milestones, agency dependencies, owner decisions and material lead times, then update it as project information becomes more certain.
  21. How long can a siding project take in Pasadena?
    There is no responsible citywide duration. Design decisions, consultant coordination, agency review, procurement, site conditions and construction scope all affect timing.
  22. How should a Pasadena siding project schedule be planned?
    Build the schedule around documented milestones, agency dependencies, owner decisions and material lead times, then update it as project information becomes more certain.
  23. How long can a deck project take in Pasadena?
    There is no responsible citywide duration. Design decisions, consultant coordination, agency review, procurement, site conditions and construction scope all affect timing.
  24. How should a Pasadena deck project schedule be planned?
    Build the schedule around documented milestones, agency dependencies, owner decisions and material lead times, then update it as project information becomes more certain.
  25. How long can a concrete project take in Pasadena?
    There is no responsible citywide duration. Design decisions, consultant coordination, agency review, procurement, site conditions and construction scope all affect timing.
  26. How should a Pasadena concrete project schedule be planned?
    Build the schedule around documented milestones, agency dependencies, owner decisions and material lead times, then update it as project information becomes more certain.
  27. How long can a window and door project take in Pasadena?
    There is no responsible citywide duration. Design decisions, consultant coordination, agency review, procurement, site conditions and construction scope all affect timing.
  28. How should a Pasadena window and door project schedule be planned?
    Build the schedule around documented milestones, agency dependencies, owner decisions and material lead times, then update it as project information becomes more certain.
  29. How long can a foundation work take in Pasadena?
    There is no responsible citywide duration. Design decisions, consultant coordination, agency review, procurement, site conditions and construction scope all affect timing.
  30. How should a Pasadena foundation work schedule be planned?
    Build the schedule around documented milestones, agency dependencies, owner decisions and material lead times, then update it as project information becomes more certain.
  31. How long can a framing scope take in Pasadena?
    There is no responsible citywide duration. Design decisions, consultant coordination, agency review, procurement, site conditions and construction scope all affect timing.
  32. How should a Pasadena framing scope schedule be planned?
    Build the schedule around documented milestones, agency dependencies, owner decisions and material lead times, then update it as project information becomes more certain.
  33. How long can a seismic retrofit take in Pasadena?
    There is no responsible citywide duration. Design decisions, consultant coordination, agency review, procurement, site conditions and construction scope all affect timing.
  34. How should a Pasadena seismic retrofit schedule be planned?
    Build the schedule around documented milestones, agency dependencies, owner decisions and material lead times, then update it as project information becomes more certain.
  35. How long can a hillside project take in Pasadena?
    There is no responsible citywide duration. Design decisions, consultant coordination, agency review, procurement, site conditions and construction scope all affect timing.
  36. How should a Pasadena hillside project schedule be planned?
    Build the schedule around documented milestones, agency dependencies, owner decisions and material lead times, then update it as project information becomes more certain.
  37. How long can a ADU take in Long Beach?
    There is no responsible citywide duration. Design decisions, consultant coordination, agency review, procurement, site conditions and construction scope all affect timing.
  38. How should a Long Beach ADU schedule be planned?
    Build the schedule around documented milestones, agency dependencies, owner decisions and material lead times, then update it as project information becomes more certain.
  39. How long can a garage conversion take in Long Beach?
    There is no responsible citywide duration. Design decisions, consultant coordination, agency review, procurement, site conditions and construction scope all affect timing.
  40. How should a Long Beach garage conversion schedule be planned?
    Build the schedule around documented milestones, agency dependencies, owner decisions and material lead times, then update it as project information becomes more certain.
  41. How long can a JADU take in Long Beach?
    There is no responsible citywide duration. Design decisions, consultant coordination, agency review, procurement, site conditions and construction scope all affect timing.
  42. How should a Long Beach JADU schedule be planned?
    Build the schedule around documented milestones, agency dependencies, owner decisions and material lead times, then update it as project information becomes more certain.
  43. How long can a home addition take in Long Beach?
    There is no responsible citywide duration. Design decisions, consultant coordination, agency review, procurement, site conditions and construction scope all affect timing.
  44. How should a Long Beach home addition schedule be planned?
    Build the schedule around documented milestones, agency dependencies, owner decisions and material lead times, then update it as project information becomes more certain.
  45. How long can a kitchen remodel take in Long Beach?
    There is no responsible citywide duration. Design decisions, consultant coordination, agency review, procurement, site conditions and construction scope all affect timing.
  46. How should a Long Beach kitchen remodel schedule be planned?
    Build the schedule around documented milestones, agency dependencies, owner decisions and material lead times, then update it as project information becomes more certain.
  47. How long can a bathroom remodel take in Long Beach?
    There is no responsible citywide duration. Design decisions, consultant coordination, agency review, procurement, site conditions and construction scope all affect timing.
  48. How should a Long Beach bathroom remodel schedule be planned?
    Build the schedule around documented milestones, agency dependencies, owner decisions and material lead times, then update it as project information becomes more certain.
  49. How long can a whole-home remodel take in Long Beach?
    There is no responsible citywide duration. Design decisions, consultant coordination, agency review, procurement, site conditions and construction scope all affect timing.
  50. How should a Long Beach whole-home remodel schedule be planned?
    Build the schedule around documented milestones, agency dependencies, owner decisions and material lead times, then update it as project information becomes more certain.
  51. How long can a roofing project take in Long Beach?
    There is no responsible citywide duration. Design decisions, consultant coordination, agency review, procurement, site conditions and construction scope all affect timing.
  52. How should a Long Beach roofing project schedule be planned?
    Build the schedule around documented milestones, agency dependencies, owner decisions and material lead times, then update it as project information becomes more certain.
  53. How long can a siding project take in Long Beach?
    There is no responsible citywide duration. Design decisions, consultant coordination, agency review, procurement, site conditions and construction scope all affect timing.
  54. How should a Long Beach siding project schedule be planned?
    Build the schedule around documented milestones, agency dependencies, owner decisions and material lead times, then update it as project information becomes more certain.
  55. How long can a deck project take in Long Beach?
    There is no responsible citywide duration. Design decisions, consultant coordination, agency review, procurement, site conditions and construction scope all affect timing.
  56. How should a Long Beach deck project schedule be planned?
    Build the schedule around documented milestones, agency dependencies, owner decisions and material lead times, then update it as project information becomes more certain.
  57. How long can a concrete project take in Long Beach?
    There is no responsible citywide duration. Design decisions, consultant coordination, agency review, procurement, site conditions and construction scope all affect timing.
  58. How should a Long Beach concrete project schedule be planned?
    Build the schedule around documented milestones, agency dependencies, owner decisions and material lead times, then update it as project information becomes more certain.
  59. How long can a window and door project take in Long Beach?
    There is no responsible citywide duration. Design decisions, consultant coordination, agency review, procurement, site conditions and construction scope all affect timing.
  60. How should a Long Beach window and door project schedule be planned?
    Build the schedule around documented milestones, agency dependencies, owner decisions and material lead times, then update it as project information becomes more certain.

City timeline guides — the deep dive

Every FAQ above is anchored in real jurisdiction data. For full line-item breakdowns, plan-check timelines, and city-specific schedules, open the timeline guide for the city you're building in.