# Knob and Tube Replacement in Southwest Minneapolis

> Knob and tube replacement in Southwest Minneapolis: larger plaster houses with hot-water heat rewired through closets and stacked walls. Request an estimate.

URL: https://northloomminneapolisknobandtube.com/service-areas/southwest-minneapolis/

Knob and tube replacement in Southwest Minneapolis: larger plaster houses with hot-water heat rewired through closets and stacked walls. Request an estimate.

- **10,219 pre-1940 homes**: The largest number of any Minneapolis community (city property records)
- **47.4% two-story or more**: Taller houses mean more routing between floors
- **61% hot-water heat**: Radiator houses, with no duct chases to share
- **Electrical permits**: [Minnesota Department of Labor and Industry](https://www.dli.mn.gov/business/electrical-contractors/electrical-permits-contractors)

More pre-1940 homes than any other Minneapolis community, many heated by radiators.

## What usually starts the work in Southwest Minneapolis

- A larger house, still on fuses A two-story house with a fuse box, original upstairs circuits and plans for central air.
- Radiators and no ductwork A boiler house where nobody is sure how cable will reach the second floor.
- A buyer's inspection report Knob and tube noted in the attic of a 1920s house during an inspection contingency.
- A finished third floor Original wiring feeding rooms under the roof, behind finished knee walls.

You have a two-story house near Lake Harriet or Minnehaha Creek, it heats with radiators, and nobody is sure how new cable will reach the second floor without tearing up the plaster. Maybe there’s still a fuse box, and you want central air. Maybe a buyer’s inspection report just flagged knob and tube in the attic, and the contingency clock is running.

At [Northloom Minneapolis Knob and Tube](https://northloomminneapolisknobandtube.com/), we replace knob and tube across Southwest Minneapolis, from Linden Hills and Fulton to Tangletown, King Field and Armatage. Many houses here combine plaster walls, hot-water heat and a second or third floor, and we plan your rewire around all three.

We also plan it around what you’ll run next. A rewire is the right moment to size the panel for air conditioning, a heat pump or a car charger, so you only open the house once.

## What do you look at on the first visit?

The upper floors first, because that’s where original wiring usually survives longest. Then we work out how to get there.

- **Tracing**: We identify every circuit, paying special attention to the upper floors.
- **Route survey**: We map closets, stacked walls and attic access floor by floor.
- **Loads**: We ask what the house will run next: central air, a heat pump, an induction range, a car charger.
- **Permit**: The permit goes to the Minnesota Department of Labor and Industry, which inspects electrical work in Minneapolis. Getting it in place is part of the job.
- **Heat kept on**: Your boiler or furnace stays on a working circuit throughout.

## How do you get cable upstairs in a house with radiators?

Through closets, stacked walls and plumbing chases. A boiler house has no ducts running between floors for cable to follow, so we look for the paths the framing already gives us. That’s the common case here: in Southwest, 61% of pre-1940 homes heat with hot water and 38% with forced air.

| Heating type | What it means for new cable |
| --- | --- |
| Hot water (radiators) | No duct chases between floors; we run cable in closets, stacked walls and plumbing chases |
| Forced air | Duct runs create chases that cable can sometimes follow |

Height matters as much as heat. About 47.4% of Southwest’s one- to three-unit buildings have two or more stories, so circuits for your upstairs bedrooms have to cross a finished floor. If your closets stack above one another, we can usually carry everything through them. If they don’t, you may need a few openings in a hall or behind a radiator.

We keep your boiler and its controls on a working circuit through every stage. With a January normal of 16.2°F, a cold boiler isn’t an option.

## Is my house old enough to have knob and tube?

It depends on when your house went up, and Southwest built across several decades. It has more pre-1940 housing than any other Minneapolis community: city property records count 10,219 one- to three-unit buildings built in 1939 or earlier, 62.7% of the 16,298 in the community. The rest went up in the 1940s and after.

So a single block can mix both. A 1915 foursquare may still carry knob and tube on its upper floors, while a house finished a few decades later on the same street may have cloth-covered cable instead, with no knob and tube at all. We trace your house to find out which it has before we write the scope, and [cloth wiring replacement](https://northloomminneapolisknobandtube.com/cloth-wiring-replacement/) covers the later cable.

## Will I need a bigger panel for air conditioning or a heat pump?

Often, yes. Many owners here pair a rewire with a heat pump, central air or an induction range. Original circuits were sized for lights and a radio, so we run a load calculation for what your house will actually run, and that decides the panel and service size.

- **Panel first or last**: If original circuits are still live, we usually change the panel at the end of the rewire, so new circuits land on it directly.
- **Service size**: We calculate it from your actual and planned loads and state it in the scope.
- **Xcel**: A service change brings in Xcel Energy to disconnect and reconnect, and we schedule that with the inspections.

The [panel upgrade](https://northloomminneapolisknobandtube.com/electrical-panel-upgrade/) page covers sizing, and the [guide to modern appliance loads](https://northloomminneapolisknobandtube.com/guide/knob-and-tube-and-modern-appliance-loads/) explains why original circuits struggle.

## What happens to my plaster, trim and finished third floor?

We plan around them. Many Southwest houses keep original plaster, oak trim and built-ins, and some have a finished third floor behind knee walls. We usually feed those third-floor rooms from the attic spaces behind the knee walls, and your scope lists each opening by room. [Plaster-wall rewiring](https://northloomminneapolisknobandtube.com/plaster-wall-rewiring/) explains how we plan and patch openings.

## Does the Lynnhurst historic district affect my rewire?

Lynnhurst, along Minnehaha Creek, is one of the city’s designated historic districts. Interior wiring is mostly out of sight. For any exterior change, such as a new meter location or service mast, we confirm with the city for your address before we design the job. [Historic-home rewiring](https://northloomminneapolisknobandtube.com/historic-home-rewiring/) covers how we protect finishes.

## I’m buying a house here. What should I do about the inspection report?

Get the wiring traced before the contingency runs out. Buyers in Southwest often see knob and tube noted with only days left to decide. A traced evaluation shows how much is live and what replacing it would involve, which is what you need to decide, negotiate or line up insurance. The [buying guide](https://northloomminneapolisknobandtube.com/guide/buying-a-house-with-knob-and-tube/) covers the questions to settle first.

## What about a duplex?

Southwest is mostly single-family, but not entirely. City property records count 713 two- and three-unit buildings built by 1939, and the community has 2,165 active rental licenses. We rewire a duplex here like any other: each unit traced to its own panel, crossovers between units separated, common basement and laundry circuits moved to a house panel, and the work scheduled one unit at a time around residents.

Minnesota’s homeowner electrical permits can’t be used on a duplex, so the permit is filed as part of the job. The [duplex rewiring](https://northloomminneapolisknobandtube.com/duplex-knob-and-tube-replacement/) page covers the details.

## What does the permit cost for a bigger house?

The Minnesota Department of Labor and Industry inspects electrical work here. A rewire of 15 to 30 circuits in an existing one-family home carries a $191 state fee, or $226 with a new service. Larger houses over 30 circuits are charged $12 a circuit, so 40 circuits and a new service come to $541. The [cost guide](https://northloomminneapolisknobandtube.com/guide/knob-and-tube-replacement-cost-minneapolis/) puts that in context with the rest of your price.

> What to have ready
>
> The inspection report or insurer letter, what you plan to add (air conditioning, a heat pump, a car charger) and photos of the panel or fuse box. Questions:
>
> (612) 509-6597
>
> .

## Services in Southwest Minneapolis

- [**Whole-House Rewiring** Most rooms still on the original wiring? We replace every branch circuit with new grounded cable, the knob and tube and everything spliced into it since, under one permit and its inspections.](https://northloomminneapolisknobandtube.com/whole-house-rewiring/)
- [**Plaster-Wall Rewiring** Worried a rewire means tearing out your plaster? We fish new grounded circuits through the hollow spaces your house already has, make a small number of planned openings, and agree the patching with you before work starts.](https://northloomminneapolisknobandtube.com/plaster-wall-rewiring/)
- [**Historic-Home Rewiring** Your house needs new wiring, but the plaster, trim, built-ins and fixtures are why you bought it. We plan the rewire room by room so the new wiring disappears and the finishes stay.](https://northloomminneapolisknobandtube.com/historic-home-rewiring/)
- [**Panel Upgrades** Still on a fuse box, or out of spaces in your panel? We replace it with a breaker panel sized for your house, and we check the circuits behind it first, so a new panel doesn't end up sitting on old wiring by accident.](https://northloomminneapolisknobandtube.com/electrical-panel-upgrade/)

## Neighborhoods, landmarks and routes

### Neighborhoods

- Linden Hills
- Lynnhurst
- Fulton
- Armatage
- Kenny
- Windom
- East Harriet
- King Field
- Tangletown

### Heritage preservation districts

- Lynnhurst

### Landmarks

- Lake Harriet
- Lake Harriet Bandshell
- Minnehaha Creek
- Linden Hills village

### Routes

- Lyndale Avenue South
- Penn Avenue South
- West 50th Street
- I-35W
- Highway 62

## Southwest Minneapolis: questions

### What does a state permit cost for a large Southwest Minneapolis rewire?

The Minnesota Department of Labor and Industry charges a flat $165 per dwelling unit for 15 to 30 circuits, and $12 per circuit outside that range, plus a $25 permit fee and a $1 surcharge, and $35 for a service. A larger house with 40 circuits and a new service works out to $541. A house within 15 to 30 circuits is $191, or $226 with a new service.

### How is a house with radiators rewired without ductwork?

Through closets, stacked walls and any chase the house already has. A boiler house has no supply or return ducts to follow between floors, so on our route survey we look for closets that line up from floor to floor and walls that stack. In Southwest, 61% of pre-1940 homes heat with hot water, so this is a common case here.

### Does the boiler stay on during a rewire?

Yes. We keep the boiler and its controls on a working circuit through every stage and switch them over to their new circuit in a short planned window. That matters in a Twin Cities winter, when a cold house can freeze pipes.

### Is a panel upgrade enough in a Southwest Minneapolis house with knob and tube?

No. A new panel changes the protection at the source, but every original branch circuit behind it stays as it was. If you're adding central air, a heat pump or a car charger, we plan the panel and service together with replacing the original circuits, and usually change the panel at the end.

### Do Lynnhurst historic district rules apply to rewiring?

Interior wiring is mostly out of sight. Whether your project needs review, and especially any exterior change such as a new meter location or service mast, we confirm with the city for your address before we design the job.

## Guides for this area

- [**How Much Load Can Knob and Tube Wiring Handle?** Less than your house probably asks of it. Here's the arithmetic, and why the tempting fix makes it worse.](https://northloomminneapolisknobandtube.com/guide/knob-and-tube-and-modern-appliance-loads/)
- [**Does a Panel Upgrade Remove Knob and Tube Wiring?** No. A new panel changes what protects your circuits, not the circuits themselves. Here's how we work out whether your house needs a panel, a rewire or both, and in what order.](https://northloomminneapolisknobandtube.com/guide/panel-upgrade-vs-knob-and-tube-replacement/)
- [**How Much Does Knob and Tube Replacement Cost in Minneapolis?** Our typical ranges for whole-house and partial jobs, what goes into a Minneapolis price, the permit fees you'll pay, and why two quotes for the same house can be thousands apart.](https://northloomminneapolisknobandtube.com/guide/knob-and-tube-replacement-cost-minneapolis/)
- [**Should You Buy a House With Knob and Tube Wiring?** You love the house, and the inspection report says knob and tube. Before your contingency ends, you can find out how much is live, whether you can insure it, and what fixing it would take.](https://northloomminneapolisknobandtube.com/guide/buying-a-house-with-knob-and-tube/)

## Nearby service areas

- [**Uptown and Calhoun Isles**](https://northloomminneapolisknobandtube.com/service-areas/uptown-calhoun-isles/)
- [**Powderhorn**](https://northloomminneapolisknobandtube.com/service-areas/powderhorn/)
- [**Longfellow and Nokomis**](https://northloomminneapolisknobandtube.com/service-areas/longfellow-nokomis/)