1
OF

11
1/2007



CITY OF CALABASAS
Most Frequent
Residential Plan Corrections
GENERAL:

1.

The first sheet of the plans must:
a.

Contain the name and address of the owner and designer, site address, and list all
consultants (engineer, energy, soils, etc.), associated with the project [106.3.3].
b.

Show applicable building data including:
i.

Classification of each occupancy group (R-3/U-1) and type of construction (V-N).
ii.

Applicable codes (2001 California Building Code with 2002 LA County
Amendments).
iii.

Number of stories, area of each story, area of addition.
iv.

Indicate if sprinklered.
v.

Provide assessors parcel number (APN) if new area is proposed.
c.

List the systems that are deferred submittals. Note the following on plans: "Deferred
Submittals shall be reviewed by architect or engineer of record prior to submittal to the
Building Official." [106.3.4.2]

2.

A complete plot plan is required showing side yard and lot dimensions, distances between
adjacent buildings, easements, public right of way, existing buildings, and north arrow.
Locate and detail construction of new fences/walls [106.3.3]. Clarify new and existing
structures/construction and specify if under a separate permit or future work.

3.

Plans and calculations are required to be prepared under the supervision of a registered
engineer or licensed architect. Final plans and/or calculations prepared by a registered
engineer or licensed architect, the first sheet of calculations and each sheet of plans
containing structural notes, plans, or details, must bear the seal (including expiration or
renewal date) and original signature of the responsible Engineer/Architect (CA B&P code).
Provide soils engineer or geologist's review stamp on foundation plans and details.

4.

Structural observation is required for project (1702). Note on plans. Clarify items to be
observed on plans.

ARCHITECTURAL REQUIREMENTS:

5.

The following are required for an attached garage: [302.4, 312.4]
a.

One-hour fire resistive materials (on garage side) on all walls, ceilings, posts, and beams
adjacent to or supporting the dwelling. Specify 5/8" type x' gypsum board, 7/8"
stucco, or other 1-hour materials.
b.

Self-closing, tight fitting (minimum 1-3/8" thick), solid core/solid wood or 20-minute
rated door at openings into dwelling.
c.

Openings from garage into a room used for sleeping purposes are not permitted.

6. Every sleeping room and basements shall have at least one exterior door or window
opening directly into a yard or exit court for emergency egress. Indicate each opening,
which satisfies this requirement on plan or schedule [310.4]. Windows must provide: 2
OF

11
1/2007



CITY OF CALABASAS
Most Frequent
Residential Plan Corrections

a.

Minimum 5.7 square feet of clear openable area.
b.

Minimum clear width of 20", minimum clear height of 24"
c.

Have a finished sill height not more than 44" above the floor. Note this on the plan or
schedule. [310.4]
d.

If finish sill height is below grade, provide minimum 36"x36" window well with a fixed
ladder. Window well must extend below windowsill for drainage. See UBC Section
310.4 for additional requirements [1402.5].

7. All habitable rooms must be provided with natural light (1/10 of floor area, 10 sq. ft. mi.)
and ventilation (1/20 of the floor area, 5 sq. ft. min. (1 ½ sq. ft. min. for bathrooms).
Show all window sizes and types on plans or schedule [1203]. Window(s) in

provide inadequate area.

8. In lieu of natural ventilation in bathrooms containing a bath and/or shower and similar
rooms, a mechanical system, capable of providing five air changes per hour and exhausting
directly to the outside, may be provided. Outlet must be minimum 3-0 from any openings
into building and 3-0 from the property line [1203.3]. Note and show locations on plans.

9. Wall coverings in showers and tubs to be cement plaster, tile, or equal to 70 above drain.
Enclosures must be of approved safety glazing and doors must swing out of showers.
Windows in enclosure walls shall be labeled safety glazing when less than 60 above the
drain. [2512 UBC, 412.7 UPC]

10. Required ceiling height is 7-6 minimum and 7-0 minimum in kitchens, halls, and
bathrooms. [310.6.1, 310.6.3]. Ceiling height in ___________ is inadequate.

11. Hard-wired smoke alarms with a battery backup are required. Show all locations with a
symbol on the plan [310.9.1]. Provide alarms at the following locations:
a.

Centrally located in rooms and corridors giving direct access to each sleeping area.
b.

On ceiling inside each sleeping room.
c.

On each story of multistory dwellings and in basements.
d.

In split-levels, alarms shall be installed on the upper level. If the lower level contains
sleeping areas, then it too shall be equipped with an alarm.
e.

When sleeping areas are on an upper level, the smoke alarm shall be located in close
proximity to the stairway.
f.

In rooms with high or sloped ceilings 24 above that of the adjacent hallway leading to
sleeping areas.
g.

Note on plans: The alarm shall be audible in all sleeping areas of the dwelling unit
which they serve.
h.

Alarms are required in existing dwellings when an additions, alteration, or repair is
made. Alarms may be solely battery operated when installed in existing construction
areas [310.9.1.2].
12. A corrosion-resistant week screed is required below the stucco a minimum 4/2 above grade/slab.
[2506.5] 3
OF

11
1/2007



CITY OF CALABASAS
Most Frequent
Residential Plan Corrections

13. Show or note fire block requirements on plans. Fire blocking shall be installed at: [708.2.1]
a. Concealed spaces of stud walls and partitions, floor and ceiling at 10-0 maximum intervals both
vertically and horizontally.
b. Interconnections between concealed vertical and horizontal spaces.
c. Concealed space between stair stringers at top and bottom run.
d. At openings around vents, pipes, ducts, and chimneys (non-combustible materials);
e. At openings between attic and chimney chase for factory-built chimneys.

14. Submit make, model, and ICC number for manufactured fireplace [3102.5] and/or skylight(s).
[2603.1.2]Submit ICC number for roofing assembly. Show slope(s) of roof; specify type of roof
covering, underlayment, fasteners, and flashing requirements. [Chapter 15]

15. Submit ICC number for roofing assembly. Show slope(s) of roof; specify type of roof covering,
underlayment, fasteners, and flashing requirements. [Chapter 15]

16. Attic with over 30 headroom must have access opening (22x30 minimum). Show the opening
located in a corridor, hallway, or other readily accessible location. [1505.1]

17. Show details of cross-ventilation for attic/rafter spaces equal to 1/150 of under roof. [1505.3]

18. Submit complete design/details of masonry/metal fireplace, chimney, and foundation [3102.4 and
.7]
a. Chimneys shall extend 2-0 above any part of the building within 10-0.
b. Factory-built chimneys shall terminate 3-0 minimum above the roof opening penetration.
c. Show how masonry/metal chimneys are anchored to floor, ceiling, and roof levels. [UBS
3102.3.6, T-31-B, 3102.4 .6, UMC 812.1, UMC-T-8-D]

19. One exit doorway 3-0 wide (minimum) by 6-8 high (minimum) shall be provided. [1003.3.1.3]

20. Notes and details are required to show the following for all interior & exterior stairways/steps.
[1003.3.3, 509]

a. Minimum 38 wide stairway and landings
b. Maximum 8 rise, minimum 9 run for private stairways
c. Note on plans: The largest rise or run in a flight of stairs may not exceed smallest by more than
3/8.

d. Dimension headroom over stairs to show 6-8 minimum from nosing of tread.
e. Guardrail on open side of stairs over 30 above floor or adjacent grade. May serve as handrail
also. Guardrail may be 34 to 38 high only at open side of stairs.
f. Handrail (required for 4 or more risers) 34 to 38 above tread nosing. 1-1/2 clearance to wall,
1-3/4 to 2 in cross section, with ends returned to wall or terminates at newel or safety post.
Show handrail continuous for the length of the stairs.
g. Open handrails shall have intermediate rails or an ornamental pattern such that a 4 sphere
cannot pass through
h. Handrail connection details adequate to withstand a 20-pounds-per-foot lateral load.
i. Sections and details to clearly show how all stairways are to be constructed, including framing,
connections, footings, and stringer size, spacing and maximum cut. Provide design of stringers.
j. Enclosed usable space under stairs to be protected by 1-hour fire resistive materials. 4
OF

11
1/2007



CITY OF CALABASAS
Most Frequent
Residential Plan Corrections

21. Every door shall have a level landing on each side. The landing shall not be more than 1 lower than
the threshold of the doorway and may be 8 maximum lower than the threshold when the door does
not swing over the landing. Exterior doors shall have a concrete landing (36x36 min.) with a
minimum slope of ¼ per foot for drainage. Detail landing and threshold drop at doors.
[1103.3.1.6]

22. Guardrails are required at floor and roof openings, landings, balconies, and at open sides of stairs
over 30 in height. Detail or note the following to show compliance [509, T-16-B]

a. Guardrails to be 36 minimum in height.
b. Open guardrails shall have intermediate rails or an ornamental pattern such that