Framing in Louisville, CO

Framing is where a Louisville remodel either matches the structural criteria the City actually enforces, or quietly drifts away from them. Louisville doesn’t publish one flat snow load or wind number for every address; it tells the design team to pull those figures for the specific site, then holds the drawings to a detailed checklist of connections, blocking, and load-path items before a permit is issued. Apollo Construction treats that checklist as the starting document for a framing scope, not paperwork to satisfy after the fact.

Which Framing Work Needs a Louisville Permit

The City’s permit-requirements table lists residential and commercial additions, residential and commercial footing/foundation work, and foundation repair as work that needs a permit. A stand-alone retaining wall is listed as “possibly,” with a note to contact the Planning Department. A framing scope tied to an addition, a new opening, or altered bearing almost always falls inside the permitted category rather than the exempt one.

We treat any change to bearing walls, beams, or foundations as permitted work by default, and confirm the retaining-wall question with Planning directly when a project includes one, rather than assuming it is minor.

Pulling Louisville’s Actual Snow and Wind Numbers for Your Address

The City’s structural design note sets Seismic Design Category B, a Windborne Debris Zone of C unless proven otherwise, and a 36-inch frost line depth — but for ground snow load and wind speed, it points the design team to the ASCE Hazard Tool for the specific address rather than stating one citywide figure. The engineer’s design criteria then have to state a minimum ground snow load along with unbalanced, sliding, and impact loads, shown on the roof plan.

Louisville’s separate design-criteria sheet lists a 145 mph design wind speed and Climate Zone 5B for the area. We pull the address-specific snow figure before framing a roof or an addition, because a number borrowed from a neighboring jurisdiction’s page is exactly the kind of error the City’s checklist is built to catch.

Load Path, Bracing, and Connections the City’s Checklist Calls Out

Louisville’s residential checklist is specific about what has to be shown on framing drawings: a wall bracing and shear wall schedule; solid blocking at bearing points on floor joists or rafters; floor joist sizing justified where joists carry partition or roof loads; roof sheathing rated and nailed per engineering, or a minimum 7/16-inch, 24/16-rated sheathing where there’s no engineered design; exterior walls over 10 feet tall checked for stud capacity against combined wind and axial loads; hurricane ties on every rafter and truss; and every structural connection — truss-to-plate, truss-to-truss, rafter-to-plate, beam-to-beam — detailed and called out on the drawings.

Structural masonry walls need professional engineering, or have to follow the City’s prescriptive masonry provisions for Seismic Design Category B if they aren’t separately engineered. We build these items into the framing drawings from the start of a project, since several of them — bracing schedules, connection call-outs — are the kind of detail that’s expensive to retrofit after a wall is already closed.

Footings, Anchor Bolts, and the 36-Inch Frost Line

Any framing that changes bearing or adds a foundation runs into the same footing and connection rules as new construction: footings at least 36 inches below finish grade, matching the City’s frost line depth; anchor bolts at least 1/2 inch in diameter, spaced no more than 6 feet on center and embedded at least 7 inches into concrete or masonry; and a complete gravity load path and lateral-force-resisting system detailed on the drawings, from roof through floors, walls, columns, foundations, and footings.

These items apply whether the project is a full addition or a smaller scope that happens to touch a footing or a bearing wall, so we check the foundation checklist against the framing scope even on jobs that don’t look, at first glance, like foundation work.

Expansive Soils and the Mine-Hazard Map

Where expansive soils are present, the Building Official can require a soils classification, which may need to be performed by a licensed engineer or architect, and special foundation provisions can follow from that classification. Separately, the City’s own Mine Hazard Map is part of the permit process, and the checklist asks for a mine-hazard plan wherever mapped mine shafts or tunnels sit within 200 feet of the lot.

We check both conditions early — soil type and mine proximity — because either one can add a design step that has to happen before framing plans are finalized, not after.

What Louisville Hasn’t Published for Framing

Some framing questions don’t have a clean answer on the City’s published pages. A dedicated, framing-specific inspection checklist beyond the general inspection-scheduling process was not on the pages we reviewed. A fixed dollar or square-footage threshold that automatically requires a stamped engineer’s letter for interior wall removal, separate from the structural checklist items above, was also not published as a blanket rule. We confirm both points with Building Safety on a project-by-project basis rather than presenting either as settled.

How We Sequence a Louisville Framing Project

We start by reading the existing structure — joist direction, walls above and below, visible bearing points — and pulling the address-specific snow and wind figures from the ASCE Hazard Tool before any framing drawing is finalized. Where the scope touches a footing, a bearing wall, or an addition, we build the checklist items above into the drawing set from the start: bracing schedule, connection call-outs, footing depth, anchor bolt spacing.

Temporary support goes in before any bearing element is disturbed, and permanent framing follows only once that support is confirmed. While members are still open, we coordinate the trades that need to run through the framed cavity, then hold the work for whatever inspection the City’s permit requires before insulation or drywall closes it in.

We keep the record of what was assumed, what was found once the wall opened, and what the final connection details were, so the project has a paper trail that matches the drawings the City approved — not just a finished wall that looks right from the room side.

Common Questions

Does removing an interior wall in Louisville need a permit?
Additions and foundation/footing work are clearly listed as requiring a permit in the City’s table. A published blanket dollar or square-footage threshold specifically for interior wall removal was not found on the City’s pages, so we confirm the permit path for a given wall-removal scope with Building Safety rather than assuming it’s exempt.

What snow load do I design to in Louisville?
Louisville doesn’t publish one flat number. The City’s checklist points the design team to the ASCE Hazard Tool for the specific address, and the engineer’s design criteria must state a minimum ground snow load plus unbalanced, sliding, and impact loads on the roof plan.

How deep do footings need to be for a Louisville addition?
The City’s checklist requires footings at least 36 inches below finish grade, matching Louisville’s adopted frost line depth, along with anchor bolts at least 1/2 inch in diameter spaced no more than 6 feet on center.

Does my lot need a mine-hazard check before framing?
The City’s plan-review checklist asks for a mine-hazard plan when mapped mine shafts or tunnels are within 200 feet of the lot, referencing the City of Louisville Mine Map. We check this early since it can add a design step before framing plans are finalized.

Talk to Us About Your Project

Tell Apollo Construction about your framing project in Louisville, and we will map it against the City’s current permit, checklist, and inspection requirements before you commit to materials or a schedule. We will give you a clear scope, the permits it likely needs, and a realistic sequence. Send us a message to start.