What Costs Does the Homeowner Control

The 40/60 split

What your budget is actually made of

On a typical project, the homeowner determines about 40% of the overall budget through the selections they make.

The remaining 60% is what the industry calls “sticks and bricks”: foundation, lumber, framing labor, roofing, plumbing, electrical, HVAC, insulation, and drywall.

Both halves are controllable.

They’re controlled in different ways, at different points, by different decisions.

Where each half gets decided

The 60% is set by the drawings.

Once the architectural and engineering drawings are complete, the quantities, materials, and labor required to build the shell and systems of the home can be priced with precision.

The 40% is set by you.

Tile, countertops, cabinets, paint, plumbing fixtures, appliances, and landscaping: these are the line items where your choices determine the cost.

The 40% you control through selections

What’s in your half of the budget

The selections that make up the 40% are the visible finishes and the materials you live with every day: tile for the kitchen and bathrooms, countertop material, the type of cabinets and the hardware on them, paint lines and finish levels, plumbing fixtures for every sink and tub and shower, appliances for the kitchen and laundry, and landscaping at the end of the job.

These items carry a wide range of price points, and the range is what gives you control over this portion of the budget.

How allowances work

During design, each selection category (tile, countertops, cabinets, fixtures, appliances, landscaping) is assigned an allowance: a budget number that reflects the level of material you plan to select.

An allowance for tile at $15 per square foot assumes a different kind of tile than an allowance at $40 per square foot.

The allowance lets the construction budget move forward before every final selection is made.

When you make the final selection, the allowance either holds, comes in under, or goes over.

That delta is where the 40% flexes.

Deciding during design, not after

The homeowners who stay closest to their budget are the ones who make selections during design, not during construction.

When a selection is locked in during design, it feeds the drawings: the tile size informs the substrate and the grout lines, the appliance specs inform the cabinet openings, the plumbing fixture informs the valve rough-in location.

When a selection is delayed, the build waits, or the build proceeds on an assumption that may need to be corrected later.

At Sunset, the primary bath palette was decided around a specific feeling the homeowners wanted in the mornings and at night.

The soft wall sconces, custom mirrors, and subdued tile were selected together, during design, so the room was built around the palette from the start.

Judy, who renovated her parents’ 1950s ranch, described this part of the process as one where Franco listened patiently to her ideas and incorporated them into the design.

Her selections were part of the drawings, not a separate phase after.

The 60% that’s controlled by the drawings

Why sticks and bricks are predictable

Foundation, lumber, framing labor, roofing, plumbing, electrical, HVAC, insulation, and drywall are all quantified from the drawings.

Square footage determines the roof area and the insulation needed.

The structural plan determines the lumber package and the framing labor.

The mechanical, electrical, and plumbing drawings determine the rough-in quantities and the equipment sizes.

When the drawings are complete and coordinated, these costs can be priced with real numbers, not placeholders.

What makes the drawings complete

A complete drawing set doesn’t leave the hard questions for the field.

The framing plan shows where the beams land.

The plumbing plan shows where every fixture connects.

The electrical plan shows every outlet, switch, and fixture, and the circuits that feed them.

When the drawings are thorough, the subcontractors bid from the same information, the quantities match across trades, and change orders during construction are rare.

The 60% stays steady because the drawings did the thinking up front.

Frequently asked questions

What part of a construction budget is the homeowner actually choosing?

The visible finishes and the materials you interact with daily: tile, countertops, cabinets and their hardware, paint, plumbing and lighting fixtures, appliances, and landscaping. Together these typically account for around 40% of the overall budget. The other 60% covers foundation, framing, roof, mechanical, electrical, plumbing rough-in, and drywall, all of which are determined by the drawings.

How are allowances connected to the homeowner’s selections?

An allowance is a dollar figure carried in the budget for a category before you’ve made the final selection. A tile allowance at $15 per square foot assumes a different kind of tile than one at $40. When you make the final pick, the allowance either holds, comes in under, or goes over. That delta is where your portion of the budget flexes.

When should I make selections to stay closest to budget?

During design. A selection locked in during design feeds the drawings, so the substrate, the cabinet openings, and the rough-in are built around it. A selection delayed into construction either holds the build up or proceeds on an assumption that may need to be corrected later. Either way it costs more.

Why do the drawings need to be so detailed?

A complete drawing set lets every subcontractor bid from the same information and lets the trades coordinate so quantities match. When the framing plan, the plumbing plan, and the electrical plan all line up, the 60% of the budget that comes from the drawings holds steady through construction. Thin drawings push decisions and costs into the field, where they’re more expensive to resolve.