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Northloom Minneapolis Knob and Tube

Service area · St. Paul

Knob and Tube Replacement in St. Paul, MN

Knob and tube replacement in St. Paul: circuits traced and rewired under a city electrical permit, with the record a TISH report or insurer needs. Get a quote.

Last Updated: November 8, 2026

41.6% built by 1939
55,312 of 133,051 St. Paul homes (U.S. Census Bureau)
A report before listing
Truth-in-Sale of Housing disclosure by a City-licensed evaluator
$15 a circuit
City electrical permit fee, $85 minimum
Early-1900s two-story foursquare with a hipped dormer and full-width front porch on a St. Paul street
Four in ten St. Paul homes were built by 1939.

What usually starts the work in St. Paul

  • The TISH report notes the wiring

    An evaluator's report before listing flags ungrounded outlets or original wiring, and buyers start asking what it means.

  • An insurer asks what is still live

    A new policy or a renewal questionnaire wants to know whether any knob and tube is energized, and "some of it" isn't an answer.

  • The attic can't be insulated yet

    An insulation contractor stops at the hatch until an electrician confirms the old runs are dead or replaced.

  • A duplex or an old house changes hands

    A new owner of a two-unit building or a hundred-year-old house wants to know what they bought before the first winter.

You’re getting ready to list, and the evaluator’s report is about to describe your wiring in writing. Or your insurer wants to know whether any knob and tube is still live, and “some of it” isn’t an answer. Or the insulation contractor stopped at the attic hatch. Those are the calls we get most from St. Paul.

At Northloom Minneapolis Knob and Tube, we replace knob and tube across St. Paul, from Summit Hill and Macalester-Groveland to Como, Payne-Phalen, the West Side and the Greater East Side. Every job starts with us tracing each circuit from the fuse box or panel, because a house of this age is almost never all original or all updated.

What changes on this side of the river is who inspects the work, what the permit costs and what a sale requires. We plan for all three from the first visit.

How is a St. Paul job different from one in Minneapolis?

The steps are the same: trace, scope, permit, rough-in, switch over, final. The office is different. St. Paul inspects its own electrical work.

The permit
It goes to the City’s Department of Safety and Inspections, not the state. St. Paul enforces the same edition of the National Electrical Code that Minnesota adopts. Getting the permit in place is part of the job.
Rough-in
A city inspector sees the new wiring before plaster, drywall or insulation covers it.
Switch-over
We bring new circuits live one at a time, so your house keeps heat and power on its old equipment until the panel changes.
Final
A second city inspection, then you get a written record of what we replaced and what we disconnected.

If a new service is part of your job, Xcel Energy disconnects and reconnects the meter, and we put that appointment on the schedule with the inspections.

Is my St. Paul house likely to have knob and tube?

If it was built before the 1940s, there’s a good chance some is still there. St. Paul’s housing is about as old as Minneapolis’s: 55,312 of its 133,051 homes, 41.6%, were built in 1939 or earlier, according to the U.S. Census Bureau. Another 6.2% went up in the 1940s, the decade cloth-covered cable began replacing open wiring, so a house from those years may have either. Tracing tells us which your house has, circuit by circuit.

What will the permit cost?

St. Paul charges per circuit, where the state uses a flat fee for a mid-sized job. For a typical one-family rewire, that puts the city permit above the Minneapolis equivalent, though it’s a small share of your total either way.

Job St. Paul permit Same job in Minneapolis (state fee)
20 circuits $301 $191
20 circuits and a new service $386 $226

The St. Paul figures come from the city’s fee table: $15 a circuit, $85 a service, an $85 minimum and a $1 state surcharge. The cost guide shows how the permit fits into a full price.

Will the TISH report force me to rewire before I sell?

No. Selling a house in St. Paul starts with a Truth-in-Sale of Housing report, and it’s where most sellers first see their wiring described in writing. But it’s a disclosure, not a repair order.

Who prepares it
A City-licensed private evaluator, hired by the seller or the listing agent.
When
Available to buyers within three calendar days of listing, and valid for one sale within 365 days.
What it requires
Disclosure only, with one exception: a single-family home without a working hard-wired smoke alarm needs one, installed by a licensed electrical contractor under permit.
How it reads wiring
The city’s sample report rates ungrounded three-prong outlets in a kitchen as a hazardous condition.

Buyers still read the report with their insurer in mind. If you have the circuits traced before listing, you can answer their follow-up questions with a record instead of a guess. TISH electrical repairs covers the items that show up most often.

Will you damage the plaster and trim in an older house?

We plan to keep openings few and easy to patch. St. Paul’s older neighborhoods include several local heritage preservation districts: Historic Hill around Summit Avenue, Summit Avenue West, Dayton’s Bluff on the East Side and Irvine Park near West Seventh. Houses there often keep original plaster, built-ins and trim, and those decide where an opening can go.

We route around that trim rather than through it: cable drops from the attic and climbs from the basement, and we place openings where they patch cleanly. Plaster-wall rewiring explains the method. If a new service would move a meter or a mast on the outside of a house in one of these districts, we check with the city’s heritage preservation staff before we design it.

I own a duplex. Does anything change?

A duplex is two electrical systems under one roof, often with separate meters and panels. The TISH requirement applies to duplexes as well as single-family homes. We schedule a duplex rewire unit by unit around the residents. Minnesota’s homeowner electrical permits can’t be used on a duplex, so the permit is filed as part of the job. Duplex knob and tube replacement covers the sequence.

My address says St. Paul. Does the city inspect my house?

Not always. St. Paul’s permit office stops at the city limits, and houses on either side can follow different rules. If your house straddles a question, such as a St. Paul mailing address outside the city limits, the property’s city decides, not its post office.

A house in Minneapolis is inspected by the state at the state’s fee schedule. South St. Paul and West St. Paul have older housing too, with 22.6% and 10.5% of homes built by 1939, and we confirm who inspects electrical work there for each address before the permit is filed. The same goes for the other suburbs around St. Paul: about 66 Minnesota cities run their own electrical inspection, so the permit line in your quote should name the office that will actually inspect the work.

Can I insulate the attic once you’re done?

Yes, and in a St. Paul winter that’s usually the next thing you’ll want. Active knob and tube is what usually stops it. The Center for Energy and Environment notes that insulation contractors generally won’t insulate around active knob and tube, and most want an electrician to confirm it’s inactive. For Xcel heating customers, the insulation rebate pays 40% of qualifying attic or wall work, up to $1,200 each, once the wiring question is settled.

Neighborhoods, landmarks and routes

Neighborhoods

  • Summit Hill
  • Summit-University
  • Macalester-Groveland
  • Highland Park
  • Union Park
  • Hamline-Midway
  • Frogtown
  • Como
  • St. Anthony Park
  • North End
  • Payne-Phalen
  • Dayton's Bluff
  • Greater East Side
  • Battle Creek
  • West Side
  • West Seventh
  • Downtown

Heritage preservation districts

  • Historic Hill
  • Summit Avenue West
  • Dayton's Bluff
  • Irvine Park

Landmarks

  • Minnesota State Capitol
  • Cathedral of Saint Paul
  • James J. Hill House
  • Como Park Zoo and Conservatory
  • Indian Mounds Regional Park

Routes

  • I-94
  • I-35E
  • Summit Avenue
  • University Avenue and the METRO Green Line
  • West Seventh Street

Planning a rewire in St. Paul?

Start with which circuits are still live. The rest of the estimate follows from that.

Get an Estimate

St. Paul: questions

What does a St. Paul electrical permit cost for a knob and tube rewire?

The City of Saint Paul charges $15 for each new, altered or repaired circuit, $85 for a service, an $85 minimum and a $1 state surcharge. A rewire of 20 circuits works out to $301, or $386 with a new service. That's the permit only; we price the work itself from your traced circuit list.

Does a St. Paul TISH report make me replace knob and tube before I sell?

No. St. Paul's Truth-in-Sale of Housing report is disclosure for buyers, prepared by a City-licensed evaluator before listing. The one repair it requires is a hard-wired smoke alarm in a single-family home. What a report says about the wiring still shapes how buyers and their insurers react, which is why many sellers have us trace the circuits first.

Who inspects electrical work in St. Paul, the state or the city?

The city. St. Paul's Department of Safety and Inspections issues electrical permits and inspects the work inside city limits, while the Minnesota Department of Labor and Industry handles Minneapolis and many suburbs. A house just across the line in Minneapolis falls under the state, with a different fee schedule.

Does rewiring a house in a St. Paul heritage district need city review?

Interior wiring rarely changes how a house looks from the street, but a new service can move the meter or the mast on the outside wall. In Historic Hill, Summit Avenue West, Dayton's Bluff or Irvine Park, we check with the city's heritage preservation staff before we design any exterior change.

Can a St. Paul homeowner get an insulation rebate after a rewire?

If the house heats with Xcel Energy gas or electricity, Xcel pays 40% of qualifying attic or wall insulation, up to $1,200 each, with air sealing required. Insulation crews generally won't work around active knob and tube, so the rewire, or our written confirmation that the old runs are dead, usually comes first. Confirm current terms with Xcel before the work.

Get an estimate in St. Paul

Tell us what you have found and where the house is in St. Paul.

(612) 509-6597

Monday to Friday, 8 AM to 6 PM; Saturday and Sunday, 9 AM to 2 PM. Outside these hours, emergency calls only.

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