# How long does it take to rewire an old house?

> How long does it take to rewire an old house? The stages that set the timeline, what stretches each one and living at home during it. Plan your schedule.

URL: https://confluxcincinnatiknobandtube.com/guide/how-long-does-it-take-to-rewire-a-house/

Learn

Nobody can honestly give you one number. What you get is a sequence of stages, each with its own pace, and most families live at home through all of them.

Last Updated: November 11, 2026

The short answer

How long it takes to rewire an old house depends on your live circuits, attic and basement access, the plaster, inspection timing and patching, so we set the schedule after tracing. The job runs in stages: assessment, permit, rough-in, inspection, devices, final and patching. Most families stay home, with power off one circuit at a time.

Key takeaways

- Your house sets the schedule: live circuits, access, plaster and stories.
- Inspection is a fixed step: your walls can't close until IBI passes the rough-in.
- Patching and painting come last, and their pace depends on the plaster and on who does them.
- Living at home is normal. Power goes off circuit by circuit, not for the whole job.
- Your written scope should state its own working days and what could change them.

## Why can’t anyone just give you a number?

You want to know how long it takes to rewire an old house so you can plan your life around it. The honest answer is a sequence: each stage has its own pace, and your house decides how long the middle stages run.

At [Conflux Cincinnati Knob and Tube](https://confluxcincinnatiknobandtube.com/) we handle [whole-house rewiring](https://confluxcincinnatiknobandtube.com/whole-house-rewiring/) and partial K&T replacement across Cincinnati, Hamilton County and Northern Kentucky. We put your schedule in the written scope after the first visit, not before.

> How we set your schedule
>
> How long a rewire takes depends on the live circuit count, the floors, the access above and below, the plaster, and whether you’re living in the house. We set your schedule from the circuit list after the first visit. This guide shows what each stage involves and what stretches it.

## What are the stages, and which ones run long?

Every permitted rewire goes through the same steps. Some are short and predictable; others depend heavily on the house.

| Stage | What happens | What makes it longer |
| --- | --- | --- |
| Assessment | We trace, test and list every K&T circuit | Many circuits, buried attic runs, a mixed system |
| Scope and permit | You get a written scope; we open the IBI permit | Plan review for larger buildings; decisions you’re still making |
| Rough-in | We fish new cable, set boxes and cut old circuits over | More live circuits, closed attics, plaster on brick, several stories |
| Rough-in inspection | IBI inspects before we cover anything | Scheduling, or a failed inspection and a reinspection |
| Devices and panel | We fit outlets, switches and fixtures, and size and label breakers | A panel change, a service upgrade, utility coordination |
| Final inspection | IBI checks the finished work | Scheduling, corrections |
| Patching and painting | We close and finish the openings | Many openings, lath or brick plaster, historic finishes |

## What makes the rough-in take longer in your house?

Rough-in is where most of the electrical hours go, and your house decides how many. The same floor area can mean very different work.

- **Live circuits.** Each circuit we replace is a route to plan and fish. Dead runs only need disconnecting.
- **Access above and below.** An open attic and an unfinished basement let us drop cable straight into the walls.
- **Plaster.** Lath and plaster, or plaster on brick, needs more careful openings; see [plaster-wall rewiring](https://confluxcincinnatiknobandtube.com/plaster-wall-rewiring/).
- **Stories and framing.** Balloon framing can let cable run floor to floor; platform framing stops it at each floor.
- **Insulation.** If K&T is buried in attic insulation, we have to find it before we can trace it.

## Why is there a wait before the walls close?

Because IBI has to see the rough-in before any of it is covered; it says it can’t approve what it can’t inspect. So there’s always a pause between running cable and closing walls.

The permit itself is quick: the City’s guide says an IBI electrical permit takes about 15 minutes at the counter. How soon the inspector visits depends on IBI’s schedule at the time. A failed rough-in adds a return trip and pushes patching back further; our [Cincinnati electrical permit](https://confluxcincinnatiknobandtube.com/guide/cincinnati-electrical-permit/) guide covers the steps.

## Why does patching come last, and why can’t it be rushed?

Patching can’t start until IBI passes the rough-in. Plaster openings close in coats, and each coat has to set before the next. Painting follows.

A patched and primed opening above a baseboard: patching and paint are the last stage of the schedule.

Who patches changes the schedule too. If restoration is part of the electrical scope, it follows the final inspection. If you hire a plasterer yourself, their calendar sets the pace. Either way, get it in writing.

## Can you live in the house during a rewire?

Yes, in most cases. Most rewires happen with people at home, because we turn power off circuit by circuit rather than for the whole house, and you get finished rooms back as the work moves on.

Living at home comes with a few ground rules, which we set out in the scope:

- **One working circuit stays live** for a freezer, a home office or a medical device.
- **Your heat stays on in winter.** The Cincinnati airport averages 31.4°F in January (NOAA normals), so we switch the furnace or boiler circuit over within the day.
- **Multi-unit buildings.** We sequence the work so people in the other units keep power.
- **Protected rooms.** We lay floor coverings and control dust wherever we cut openings.

The whole house loses power only for a panel switchover, which we schedule ahead. [Preparing for a rewire](https://confluxcincinnatiknobandtube.com/guide/preparing-for-a-rewire/) covers what to move and plan before work starts, and [two-family and rental rewiring](https://confluxcincinnatiknobandtube.com/two-family-and-rental-rewiring/) covers occupied units.

## When does it make sense to stay somewhere else?

Some households choose to be away for part of the job. It’s a preference more than a requirement, and it usually comes down to one of these:

- Someone at home is sensitive to dust or noise
- Most rooms need openings at the same time, as in a fast whole-house job
- Remodeling or plaster work is happening alongside the rewire

## How do you get a schedule you can plan around?

Ask for the schedule in the same document as the scope. A useful one lists the working days for rough-in, when each inspection should happen, the switchover date if the panel changes, and who patches and when.

Our guide to [comparing rewiring quotes](https://confluxcincinnatiknobandtube.com/guide/comparing-rewiring-quotes/) shows how to check that two quotes schedule the same job, and [how replacement works](https://confluxcincinnatiknobandtube.com/guide/how-knob-and-tube-replacement-works/) follows a job step by step. To start with the assessment, call [(513) 496-2715](tel:+15134962715).

## Questions about this guide

### Why won't anyone give me a firm number of days over the phone?

Because nobody can see what sets it from a phone call. The number of live circuits, whether cable can drop from the attic, and how many openings each room needs only show up when we trace. A number before that is a guess; the written scope after the first visit is where your schedule belongs.

### Can a rewire be split around a holiday or a new baby?

Often, yes. We can phase the job so the rooms you need most come first, or pause between phases. Each phase still needs its inspections, and a pause after rough-in still waits for IBI before walls close. Tell us the dates that matter on the first visit and we'll build the sequence around them.

### How long is the power off on the day the panel changes?

A panel change is the one time the whole house loses power, for the switchover itself. How long depends on the panel and whether the service changes too, which brings in the utility. We schedule it ahead of time so you can plan for a freezer, a home office or a medical device.

## Related service

- [Service**Whole-house rewiring** We replace every branch circuit in one permitted project, laid out for how you use the house now.](https://confluxcincinnatiknobandtube.com/whole-house-rewiring/)

## More guides

- [Learn**How do you prepare for a house rewire?** Most of the preparation is decisions, not packing. Make them before the scope is final and the rest of the job runs more smoothly.](https://confluxcincinnatiknobandtube.com/guide/preparing-for-a-rewire/)
- [Learn**How is knob and tube replaced?** What happens between our first visit and your final inspection, and why each step depends on the one before it.](https://confluxcincinnatiknobandtube.com/guide/how-knob-and-tube-replacement-works/)
- [Learn**How does a Cincinnati electrical permit work for a rewire?** Who issues it, who can pull it, what the inspector looks at before your walls close, and what changes outside the city line.](https://confluxcincinnatiknobandtube.com/guide/cincinnati-electrical-permit/)
- [Decision Guide**How do you compare knob and tube rewiring quotes?** Two honest quotes can be far apart because they price different jobs. Line them up by scope before you compare the totals.](https://confluxcincinnatiknobandtube.com/guide/comparing-rewiring-quotes/)
- [Learn**Do you need approval to rewire a house in a Cincinnati historic district?** Inside, usually not. Outside, often yes. Here's where the line falls, and how we protect what makes an old interior worth keeping.](https://confluxcincinnatiknobandtube.com/guide/rewiring-in-a-cincinnati-historic-district/)

## Get an estimate for your house