When a renovation goes over budget, the cause is often assumed to be bad pricing. More often it is sequencing — work done in an order that required some of it to be undone.
Nobody plans to tile a floor and then cut it open for a drain. It happens because the decision about the drain had not been made when the tile went down.
The principle
Work proceeds from the structural and concealed outward to the visible and finished. Anything that gets buried has to be right before it is buried, and anything that might change should change before something expensive is installed over it.
The general order
1. Establish what the structure allows
Before any design is settled: what walls can move, what the roof framing permits, where load paths run. A plan developed before this is a plan that may need redrawing.
2. Resolve the envelope
Roof, windows, exterior waterproofing, drainage. Finishing an interior under a roof that still needs work is a reliable way to pay for the interior twice. Water always wins eventually.
3. Demolition and structural work
Removals, beams, posts, any foundation work. This is also where the unknowns surface, which is why it belongs early — a surprise discovered here is a change of plan, while the same surprise discovered later is a change of completed work.
4. Rough-in: the services
Plumbing, electrical, mechanical, and anything else that lives inside a wall, floor or ceiling. This is the stage with the longest consequences, because everything here is about to become inaccessible.
It is also the stage that demands decisions people would rather defer. Where exactly the sink goes determines where the drain goes. Where the island sits determines the floor penetrations. Where the television hangs determines the conduit. “We will decide later” at rough-in means opening something later.
5. Insulation and drywall
The point of no easy return. After this, changing anything concealed means cutting.
6. Finishes, in their own order
Generally from the top down and the dirty to the clean: ceilings, then walls, then cabinetry, then flooring, then fixtures and fittings, then final paint. The order varies by trade and by material — some flooring goes before cabinetry, some after — and that is a conversation with the builder rather than a rule.
7. Outside
Landscape and hardscape generally last, because construction traffic destroys them. Anything requiring machine access needs to happen before the access is closed off.
The decisions that have to be made earlier than people expect
- Appliance selection, before rough-in. Sizes, clearances, gas or electric, and venting all affect framing and services.
- Plumbing fixture selection, before rough-in. Wall-mounted taps, freestanding baths and specific shower systems all have in-wall requirements.
- Lighting plan, before drywall. Where fixtures go, how they switch, and whether anything is being dimmed.
- Tile layout, before waterproofing in wet areas.
- Anything requiring blocking in walls — grab rails, heavy mirrors, wall-hung vanities, TV mounts.
Permits and inspections sit inside the sequence
Where work is permitted, inspections occur at defined stages — typically after rough-in and before concealment. Work covered before inspection may have to be uncovered. This is not a formality to be worked around; it is part of the program, and a builder who plans for it keeps the job moving.
What to do with this as an owner
You are not sequencing the job — a competent builder does that. What this knowledge buys you is the ability to make decisions when they are needed rather than when you feel ready, and to recognize when a program is being proposed that will cause problems.
The most useful thing an owner can do is make selections early. The second most useful is to resist mid-project changes once something is concealed, or to accept honestly that a change at that point carries a cost that has nothing to do with the merit of the idea.
Common questions
Why do renovations go over budget so often?
Two recurring causes. Unknowns that surface once things are opened up, which is why establishing scope properly before starting matters. And decisions made late, after work has been completed that then has to be altered — which is sequencing rather than pricing.
How early do I need to choose appliances and fixtures?
Before rough-in. Appliance dimensions, clearances and venting affect framing and services, and plumbing fixtures frequently have in-wall requirements. Choosing after the walls are closed means either compromising the selection or opening the wall.
Can I change my mind partway through?
You can, and the cost depends entirely on what has already been concealed or installed. A change before rough-in is often minor; the same change after drywall and tile is a different number. It is worth asking the builder what a change will cost before deciding, rather than after.
This is general information to help you ask better questions about a specific property. It is not an inspection, an engineering opinion, an appraisal or legal advice, and it does not replace the licensed professionals who provide those.
Where this applies
Related reading
- Can You Open Up a 1990s or 2000s Floor Plan? The most common renovation request in the East Valley, and the one most often priced wrong.
- Buying a Mid-Century Block Home: What the Structure Will Let You Do The Valley’s most under-rated renovation stock, and how to tell a good one from a money pit.
- What a Historic District Overlay Changes About Renovating Not a reason to avoid these homes. A reason to plan differently.