Cost controls: How to Control the Cost of a Second-Story Addition

Most of what a Denver pop top costs is settled before anyone swings a hammer. The drawings decide it. By the time the framing goes up, most of the money is already spoken for, so the place to control the budget is on paper, months earlier than people expect.

If you want the raw numbers first, the Denver pop top cost guide lays out the ranges. This one is about landing your project toward the low end of them, and still ending up in a house you want to live in.

Design inside the footprint you already have

The biggest lever is where the new floor sits. Build straight up over the walls you already have, and the house carries the second story down through structure that is already there. Push the new floor out past the footprint, or chop the roofline into dormers and bump-outs, and every one of those moves adds framing, flashing, engineering, and one more place for water to find its way in.

A plain rectangle upstairs frames fast and sheds water without much fuss. Add jogs and dormers and every one of them costs more to build and hands the weather another opening. Before you fall for a roofline in a rendering, ask what it takes to frame it and to keep it dry across twenty Denver winters.

Keep the main floor out of it

The staircase is the one part of a pop top that has to reach down into the house you already live in. It has to come from somewhere, and finding the room for it usually means opening a wall or two on the main floor.

That open wall is where a pop top budget slips. Once the plaster is off and the kitchen stands half exposed, finishing the kitchen starts to look obvious, and from there the living room and the floors follow it. A second-story addition becomes a gut remodel, one reasonable decision at a time.

Draw the line on paper before demolition starts. Write down exactly what the main floor work includes, and treat anything past that list as a separate project for a later year.

Keep the plumbing in a straight line

Plumbing gets cheaper the shorter it runs. Put the new upstairs bathroom right over a kitchen or bath below, and the water and waste lines drop a short vertical distance through walls that already carry pipe. Scatter the new bathrooms across the far corners of the floor, and someone has to route lines the length of the house, often through framing that has to be cut and rebuilt to let them past.

You will not always get a clean stack over what is below. Where you can, it is money you keep for nothing harder than putting the fixtures in a sensible spot.

Spend the finish budget in the right order

The gap between builder-grade and high-end finishes runs into six figures on a pop top, and this is the slice of the budget you hold in your own hand.

Put the money where your hands and feet meet the house every day, the shower and the kitchen above all. Ease off on the surfaces you register once a year, like the trim in a guest room or the tile in a closet.

You can also spread the finishes over time. Get the shell closed in and the systems run now, then take the walls and floors to something you can live with. The built-ins, the stone counters, the show-piece lighting, and the landscaping can wait for a later budget. Aim to move into a plain finished room. A grand one that stalls half-built helps nobody, and by then the money is gone.

Settle it on the drawings

The costliest phrase on a job site is "while we're in here." A change you make on the drawings costs an eraser. The same change after the framing is up costs demolition, new material, new labor, and a delay while the whole crew waits on a revised plan.

So spend the time up front. Walk the drawings until you can picture yourself living in the rooms. Sign off on the wall locations, the switch heights, the way the stairs turn, and the ceiling lines before anyone builds to them. Change orders drain a remodel budget a little at a time, and almost every one traces back to a decision nobody made in time.

Build a contingency, then leave it alone

Set aside 10 to 15 percent of the whole budget and pretend it is not there. On a house this old, opening the walls turns up things no builder could quote in advance: knob-and-tube wiring behind the plaster, a cracked sewer line under the slab, a beam that rotted out under a leak two owners ago, a footing that needs underpinning. The contingency is what keeps a surprise from becoming a stopped job.

Leaving it alone is the discipline, because it sits there in plain sight while the tile you liked better goes unbought. Every dollar you move into upgraded finishes is a dollar missing the day the framer finds something. Keep the two piles apart in your head, and let only real surprises reach the contingency.

What to leave alone

A few things are the wrong place to hunt for savings, because skimping on them writes a bigger check later.

Structure comes first. The engineering that lets an old house carry a second floor is not where you shop for a bargain. Waterproofing and flashing sit right behind it, since the details that keep weather out of a brand-new roofline are invisible and completely unforgiving, and a leak that shows up in year three can take a finished ceiling down with it. Good windows earn their price through a Denver winter, and replacing them later means cutting back into finished walls. Insulation is cheap while the framing is open and a headache to add once it is closed.

If something has to give, make it the granite. The flashing and the framing stay off the table.

Get a real number for your house

Now you have a handful of cost control tools in your tool belt. If you're ready to take the next step use the form below and we'll connect you to a trustworthy architect and builder.