refer to PERMITS for an overview
of the permit process.
GENERAL PERMIT INFORMATION
DOWNLOAD THIS GUIDE IN ENGLISH OR SPANISH OR AN APPLICATION
Provide two sets of plans and complete
- Complete this Building Guide by filling in the blanks on page 7 of this
Building Guide (download this guide), and indicating
which construction details will be used.
- Provide 2 Plot Plans (site plans) showing dimensions of your project or
addition and its relationship to existing buildings or structures on the
property and the distance to existing property lines drawn to scale (example
of a plot plan).
- Fill out a building permit application.
The majority of permit applications are processed with little delay. The
submitted documents will help determine if the project is in compliance
with building safety codes, zoning ordinances and other applicable laws.
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General Permit Information
A building permit is required anytime
there is an addition, alteration, repair or demolition to the main structure
or accessory structure on a lot or parcel.
The issuance of permits and subsequent
inspections of the work performed ensures that all construction in the city
is safe and in compliance with the City of Longmont Land Development and Building
Codes. The primary purpose of these codes is to ensure a safe and healthy
environment for the citizens of Longmont.
Permits are reviewed and issued
at the Building Inspection Division office located at the Development Services Center,
385 Kimbark St. The office is open from 8:00 AM to 5:00 PM Monday through Friday. Call (303) 651-8332 for additional information.
As a homeowner you can act as your
own contractor and do the work without a contractor's license on your own
property where you live. However, if you subcontract a project, electrical
wiring for example, then the subcontractor must be licensed to work in Longmont.
You may as a homeowner be issued a permit for subcontracted work; however,
you are also responsible for inspections and sign-offs on the permit card.
If you do work, or have any work done without obtaining a permit, you could
be incurring liability in the event of a fire or accident related to the
work. In some circumstances, your insurance could be invalidated.
NOISE: Section 10.20.100 of the Longmont Municipal Code prohibits making
unreasonable noise which would cause a person of ordinary sensitivities
significant annoyance and irritation.
CONSTRUCTION DEBRIS & TRASH: Section 9.04 of the Longmont Municipal
Code requires debris and trash be contained on the job site.
BEFORE DIGGING: ALWAYS call the Utility Information Center at 1-800-922-1987
to locate underground utility lines. Allow 3 working days for the lines
to be located and marked.
Requests for inspections are recorded
on the Building Inspection Selectron System by dialing (303)774-4595. You
need your permit card when calling this system, as it will prompt you for
the permit and inspection numbers listed on that card. Inspections are usually
made on the following day. It is wise to anticipate when they need to be made
to prevent delays. No inspection will be made on subcontracted work done by
an unlicensed subcontractor.
A good rule of thumb is that you
should not proceed to cover up any work that has not been inspected. Although
you may request either morning or afternoon inspection times, it may not be
possible to schedule a specific time for the inspector to be there. You SHOULD
NOT schedule any concrete or other major work for the same day as the inspection
to avoid costly problems. Inspections must be called in the day before needed
in order to efficiently schedule and route the Field Inspectors.
Please have all animals including
dogs under control and not in the areas to be inspected. Even a normally friendly
dog can become a nuisance to inspectors. Inspections will not be made if there
are animals running loose and a re-inspection fee may be assessed if this
The final inspection is the last
step in the inspection process and is your certification that the work has
been satisfactorily completed according to the building code.
Most decks require only two inspections.
Please use the following information to plan for these:
- Job site address posted during entire construction process on site.
- Inspection Record Card in plain sight, on site.
- Approved plans and site plan on site.
- Lot lines clearly marked with string lines or otherwise.
- Footing/Foundation forms and reinforcement in place.
- Erosion control in place.
Decks that are less than 24" above grade, (measured from top of finished
floor of deck to grade) may be placed anywhere on the property except in
R1, R2, R3, RLE, RMD
||One foot for every 2 1/2 feet or fraction
thereof of building height; height being measured from 1/2 the peak
of the house to the ground. Affordable housing requires a minimum of
3'-0 side yard setbacks
Other Structures: 5 feet away from sheds, detached garages, etc.
PLEASE NOTE: If the property
is in a Planned Unit Development District (PUD), the setbacks are as specified
on the Plat Map for the development. You may call Building Inspection for
Decks that are more than 24"
above grade must be placed at minimum setback distances away from property
lines. This is dependent upon the zone in which they are located as specified
in the Longmont Municipal Code Section 19.16.010.
Redwood is unsuitable for Structural Members (i.e. beams, joists and ledger
boards, etc.) Redwood may be used for posts, decking, handrails and trim.
Pressure treated or approved wood of natural resistance to decay must be
used when wood joists are less than 18" or wood beams are less than
12" above exposed earth.
The minimum depth is 30" below grade level; minimum diameter is 8".
Footings/Caissons which support large loads or are constructed on soils
with low bearing capacities, may be required to be larger. Call for caisson
inspection before pouring caissons.
Posts are attached to the caissons below and the beams above with suitable
anchors and brackets. Posts are required to be a minimum of 4"X4"
nominal dimension. Redwood may be used if it is relatively free of knots
and splits; otherwise pressure treated lumber may be required.
The minimum ledger size shall be the same size as the joists. Ledger boards
are attached to the house with lag bolts that are at least 3/8" in
diameter and long enough to go through the ledger board, siding, and they
shall also penetrate fully into the rim joist or other backing inside the
wall. THE DECK SHALL NOT BEAR ON ANY PART OF A HOUSE CANTILEVER.
These are placed diagonally between the posts and beams and may be required
for decks built high enough to cause swaying.
BEAMS AND JOISTS
Beams and joist sizes are determined by a 40 psf live load, and a 10 psf
dead load, in combination with span lengths, and floor area supported. Because
there are many combinations of span and floor area, this pamphlet will not
attempt to address all of these. The minimum sizes will be verified with
the aid of a computer program by the Building Inspection office upon review
of your project. TJI's, LVL's and other laminated materials not specifically
manufactured and labeled for exterior applications are not suitable and
cannot be used.
BEAMS. Beams are attached
to posts below with suitable metal ties. Beams may cantilever out from
posts 1'-0" maximum. Beams may be either one solid piece of lumber,
or more commonly two boards of equal size may be attached together forming
one solid member and spliced above post.
JOISTS. Joists may be
attached on top of the Ledger Board or to the side with joist hangers.
They may be attached on top of the beams with solid blocking between them.
Another method of attachment is with joist hangers in order to be "flush"
on top with the top of beam, in this case it is required that the beam
be either one solid piece or two or more boards securely fastened together
to form one solid member and spliced above post.
Galvanized nails must be used to secure joist hangers, post anchors or framing
anchors to framing members. Non corrosive screws may be used only to secure
decking to joists.
Redwood, Pressure Treated wood and even the new Plastic/Resin Composites
are recommended for deck flooring materials to prevent decay. Boards are
placed with a gap in between for water to drain out. 2"X6" nominal
placed a maximum of 24" on center may be used for decking, or 5/4"X6"
nominal placed a maximum of 16" on center.
Required if the finished floor of the deck is greater than 30" above
grade. The minimum guardrail height is 36" above finished floor and
built to withstand a 200 pound force applied in any direction. The minimum
distance between balusters is less than 4" measured either horizontally
The maximum step rise is 7 3/4", and the minimum step run is 10".
The rise and run distances may not vary by more than 3/8" for the length
of the complete run. Handrails are required for stairs having 4 or more
risers, serving a single family residence. The handrail must be between
34" and 38" above the nosing of the stair treads.
The proposed deck should not adversely affect natural light from entering
these windows. If these windows are necessary for emergency egress (i.e.
bedroom windows), then appropriate construction is required to maintain
proper distances and escape route.
Electric meter must remain at 5'6" above grade including finished floor
Proper height of overhead service
drop must be maintained:
- A minimum of 10' at the service entrance to buildings, or above grade
or any surface accessible by pedestrians.
- A minimum of 3' above roofs with slopes greater than 3" in 12".
- A minimum of 15' over driveways.
The meter may need to be moved
in some instances.
Plot Plan Requirements (see
a sample plot plan)
1. North Arrow.
2. Property Address.
3. Lot dimensions.
4. Easements and adjoining street name(s).
5. Parking and sidewalk locations.
6. Location of proposed and existing structures including house, detached
garages, sheds and the Deck. Show dimensions and distances to property lines
and each structure.
7. Location of utility lines inclusive of water, sewer, electric and gas
lines if affected by project.
8. Drainage pattern if affected by project.
Structural and Layout Plan View
1 Overall deck dimensions.
2 Dimensions and depth below grade, of footings/caissons.
3 Beam size, span, and bearing locations. (include cantilevers)
4 Post anchor size and spacing between posts.
5 Window, vent and crawl space access size and locations if covered by this
1. Grade and species of all wood
2. Size, span, and spacing of joists, beams and posts. (include cantilevers)
3. Size and species of decking materials.
4. Bracing details.
5. Finish grade with slope shown.
6. Show dimensions.
7. Location and size of stairs and guardrail and window wells.
8. If involved in this project, show:
a. Plumbing fixtures (hot tubs)
b. Electrical plan including outlets, switches and emergency shutoff location.
A, Detail B, Alternate
Detail B1, Alternate Detail
B2, Detail C
IMPORTANT: You MUST
have the Adobe Acrobat Reader on your
system prior to selecting the report in order to be able to view these files.