Cost to gut a house per square foot (down to studs)
A gut renovation strips a house down to the studs and rebuilds the systems, so it sits at the high end of the per-square-foot range. Here is how to estimate it, what pushes the number up, and how to normalize any quote.
“How much does it cost to gut a house?” is really a per-square-foot question, because a whole-house renovation scales with size. Three tools work together here: the gut renovation cost tool, the whole-house renovation cost tool for lighter scopes, and the cost-per-square-foot normalizer to compare quotes.
What “gut” means — and why it costs more
A gut renovation takes the house down to its studs: out come the drywall, flooring, fixtures, and usually the wiring, plumbing and HVAC. Then everything is rebuilt. Because you are replacing the systems and finishes throughout — not just refreshing surfaces — a gut sits at the high end of the per-square-foot band, well above a cosmetic remodel. A light refresh reuses the systems; a gut does not.
The core formula
Estimate it as total = area × $/sq ft (higher band) + add-ons. Worked example: a 2,000 sq ft house at $120/sq ft is $240,000 before add-ons. Compare that to a lighter whole-house renovation — say 1,800 sq ft at $75/sq ft, which is $135,000 — and the gap between a refresh and a gut is clear. The $/sq ft you enter reflects your market and finish level; the site stores no cost index because that number is time- and place-bound.
The add-ons on a gut
Even at a whole-house $/sq ft, some big-ticket items are usually broken out because they vary so much: a new roof, a full HVAC system, a rewired electrical service and panel, and re-plumbing. The gut tool lets you add these on top of the per-square-foot base so the estimate reflects which systems you are actually replacing. A house that needs a new roof and a service upgrade is a very different number from one that does not.
Normalize everything to $/sq ft
The most useful habit on a big project is converting every figure — your budget, each contractor’s bid, a neighbor’s recent renovation — to dollars per square foot. Divide the total by the area: $135,000 ÷ 1,800 = $75.00/sq ft, and multiply back (1,800 × $75 = $135,000) to check. The cost-per-square-foot tool does both directions. Normalizing lets you compare a small-house quote with a big-house quote, and spot a bid that is quietly high or suspiciously low.
Scope, permits and sequencing
A gut is the most permit-heavy renovation there is: structural changes, full electrical, plumbing and mechanical rough-ins, all inspected before the walls close. It is licensed-pro work end to end, and it runs on the standard project-phase sequence — planning, permits, demolition, rough-in, inspection, insulation and drywall, finishes, fixtures, punch list. Because so much is uncovered at once, a gut also carries the largest surprise risk, so a healthy contingency is essential. For a room-by-room breakdown of a whole-house budget, roll it up with the room-by-room budget tool.
The takeaway
Estimate a gut as area × a high $/sq ft band, break out the roof, HVAC, electrical and plumbing as add-ons, and normalize every quote to $/sq ft to compare. Expect it to sit well above a cosmetic remodel, and plan it as fully permitted, inspected, licensed-pro work with a real contingency.
What you find in the walls
The defining financial feature of a gut renovation is that it opens everything at once, so it uncovers everything at once — and older homes hide a lot. Knob-and-tube or aluminum wiring that has to be replaced; galvanized or lead supply lines and cast-iron drains at the end of their life; framing damaged by past water or insects; asbestos in old flooring or insulation, or lead paint, both of which carry regulated abatement costs; and structural surprises like undersized headers or a wall that turns out to be load-bearing. On a cosmetic remodel you might dodge these; on a gut you meet all of them, which is why a gut carries the largest contingency of any renovation — the top of the 10–20% band or beyond. That is not pessimism, it is arithmetic: the more you expose, the more you find. Budget the contingency as spent, set it deliberately with the contingency planner, and treat any of it you do not use as a genuine win.
Living arrangements, timeline and holding costs
A gut renovation usually cannot be lived in while it happens — there may be no functioning kitchen, bathroom, heat or, at times, power — so the plan has to answer where you will live and for how long. Those holding costs are a real part of the total that a pure construction estimate omits: rent or a second mortgage on a place to stay, storage for your belongings, and the longer timeline that a whole-house job inevitably runs. A gut also front-loads decisions: because every system and finish is being replaced, you are making hundreds of choices, and indecision costs time, which costs money. Sequencing the work with the standard project phases and locking major selections early keeps the schedule — and the holding costs — under control. When you compare the gut number to simply moving, or to a lighter renovation, include these holding and timeline costs, not just the construction total; they are often what tips a close decision.
Estimate, not a bid. Planning math on your numbers. A gut renovation is structural, electrical, plumbing and mechanical work that must be done by licensed professionals with permits and inspections — confirm scope and code with your local building department.