A single-storey floor stands on its walls and foundation. A two-storey home adds a crucial complication: the structure has to stack. Loads from the upper floor have to find their way down through the lower floor to the ground. That one idea — coordinated load paths between levels — drives most of what changes when you frame a multi-storey house.

If you're framing a whole house, read this alongside framing plans for residential new builds, and see the second floor framing plan guide for the upper level specifically.

Each level is its own plan

The first practical point: you draw a separate floor framing plan for each level. The ground-floor framing, the first-floor (upper) framing, and the roof all have different joist layouts, openings, and bearing lines. They're individual drawings — but they can't be designed in isolation, because they have to agree vertically.

Stacked load paths

This is the heart of two-storey framing. When you place a bearing wall or a beam on the upper floor, its load has to land on something below — a wall, a beam, or a column — not over open space. Practical consequences:

  • Upper-floor bearing walls ideally sit over lower-floor bearing walls or beams.
  • Where an upper wall can't align with support below, a beam on the lower level carries it down to walls or columns.
  • Columns and a structural grid become more useful, giving you consistent lines for loads to follow down. (See structural grid and columns.)

Drafting each level over a consistent footprint makes it much easier to see whether the lines stack.

Stairwells

A staircase between levels is a large opening that interrupts the joist field on the floor it passes through. It needs headers and trimming around it, and its position has to work on both the level it opens into and the structure around it. Place the stairwell early — it influences joist runs and bearing on more than one level.

A workflow for two storeys

  1. Draft the ground floor framing first — footprint, joists, bearing walls, openings.
  2. Draft the upper floor over the same footprint, noting where its bearing walls and beams fall.
  3. Check that upper-floor support lines land on structure below; add lower-level beams or columns where they don't.
  4. Place the stairwell opening and frame it on the relevant level.
  5. Export each level's plan for review.

For the per-floor steps, see how to draft a preliminary floor framing plan.

This is where engineering matters most

Stacked load paths, transfer beams, and column loads are squarely engineering territory. A preliminary multi-storey framing plan is invaluable for coordinating the levels and communicating intent — but the load paths, member sizes, and connections must be confirmed by a qualified engineer for your project and local code.

Try it

Draft each level over a shared footprint and check that the lines stack. Open the framing studio to lay out a two-storey home in the browser.