Remodel and Addition Electrical Work in New Hampshire

Remodel Rough-In and Trim-Out, the Two Visits That Matter

Remodel electrical work happens in two visits at specific moments, and getting the sequencing right is most of what makes a project run smoothly rather than badly.

Rough-in comes after demolition and framing and before anything closes up. Every cable run, every box set, the panel work done, and it is inspected before insulation and drywall. This is the moment that cannot be revisited cheaply, which is why the layout has to be decided before the walls close rather than when the fixtures arrive.

Trim-out comes after the cabinets, counters and finishes are in. Devices, fixtures, appliance connections and the final inspection.

We plan, rough in and trim out remodels across Manchester, Concord, Nashua, Bedford, Derry, Salem, Henniker, Laconia and Keene, and the date the whole program hangs on is the rough-in inspection rather than anything on our side.

What Has to Be Decided Before Rough-In on a Remodel

The appliances, the layout and the lighting, and all three before the walls close rather than during.

Appliances decide circuits. A gas range needs an outlet for the igniter; an induction range needs a dedicated 240 volt circuit sized to the appliance. A built-in microwave, a second oven, a wine fridge, a warming drawer and a pot filler each add something. Knowing the models is ideal and knowing the types is the minimum.

Layout decides routes. Where an island sits determines whether a floor feed is needed and where it comes up, and that is one of the few things genuinely difficult to change once the subfloor is closed.

Lighting decides the ceiling and the cabinet chases, both closed at rough-in. Under-cabinet lighting needs a chase and a switch loop planned in advance, which is why the lighting design belongs at the start rather than at the end.

Kitchen Remodel Electrical Scope

A modern kitchen is the most electrically demanding room in a house and the scope is almost always larger than people budget for.

Current requirements call for two dedicated small appliance circuits at minimum, plus dedicated circuits for the dishwasher, the disposal, the refrigerator and a built-in microwave, a 240 volt circuit for a range or cooktop, and lighting on its own circuits separate from the outlets. Countertop outlets have spacing requirements, islands and peninsulas have their own rules, and all of it needs GFCI protection with AFCI on most of it.

A kitchen from the 1970s frequently has two or three circuits doing all of that, which is why getting from there to a current kitchen means new circuits run from the panel rather than anything that can be done at the outlet.

Our guide to kitchen remodel electrical work goes through the full list.

Bathrooms, Basements and Additions

Each has its own requirements and each is a different conversation from a kitchen.

A bathroom needs a dedicated circuit for the receptacles, GFCI protection throughout, ventilation that is properly interlocked or switched, and lighting that puts light on a face at the mirror rather than on the top of a head. Heated floors, if they are going in, need their own circuit and their own thermostat and have to be decided before the floor is laid.

A finished basement is effectively a new floor of the house: circuits for outlets and lighting, egress lighting where required, and frequently a sub-panel because the load is concentrated in one place. Damp is the constant, so anything below grade needs the appropriate protection.

An addition is a new build attached to an old one, and the interesting part is usually the join. The existing service has to carry it, the existing panel has to have space, and the old wiring at the boundary is often where the surprises live.

When a Remodel Triggers a Service Upgrade

Often enough that it is worth checking at the design stage rather than discovering at rough-in.

A remodel adds load. An induction range replacing gas, a heated bathroom floor, a finished basement with its own circuits, or an addition with heating and cooling all land on the same service. In a New Hampshire house that was wired when the heat was oil and the range was gas, two or three of those together is what pushes a 100 amp service past what it can carry.

The check is a load calculation on what the house will be rather than on what it is, and the load calculator runs it in a few minutes.

Where the answer is that the service needs upgrading, doing it as part of the remodel is considerably cheaper and less disruptive than doing it afterwards. Panel and service work alongside a remodel shares the access, the mess and the making good.

Rewiring a Remodel While the Walls Are Open

If the house has old wiring, a remodel is by a distance the cheapest moment you will ever get, and passing it up is the decision people regret.

The expensive part of rewiring is access: opening walls, fishing cable, then patching, priming and painting. During a remodel the walls are already open, the cabinets are already off, the floor is up in places, and somebody is already on site making good. The marginal cost of running new circuits to the rest of the floor while the room is stripped is a fraction of the same work as a standalone job.

It applies most in the older stock where the room is being remodeled precisely because the house is old. A farmhouse around Henniker, Hopkinton, Warner or Bradford, or an older house in Manchester, Concord or Keene, very often has knob and tube or cloth-covered cable still live somewhere, and the kitchen or bathroom wall is frequently the route to it.

Even where a full rewire is not warranted, a remodel is the moment to add the GFCI and AFCI protection the rest of the floor is missing.

Remodel Permits and the Two Inspections

Remodel electrical work is permitted and inspected twice, at rough-in before anything is closed up and at final after everything is in. The permit is pulled by the licensed electrician and the town carries out both.

The rough-in inspection is the one that most affects the schedule, because nothing can be closed until it passes. Drywall waits, and every trade behind it waits. A delay there is one of the more common causes of a remodel slipping and it is largely avoidable by having the work genuinely finished when the inspector arrives rather than nearly finished.

The value of the permit outlasts the project. A kitchen or a bathroom is what buyers look at hardest, and a remodel with no record of inspected electrical work is a question at every future sale.

Unpermitted work found during a sale is one of the more common reasons a closing is delayed, and putting it right retrospectively always costs more.

Home Addition Wiring in NH and How the New Space Gets Its Power

An addition changes the electrical load of a house, and the first decision is how the new space gets its power. A small addition may be served by new circuits from the existing panel if there is room and capacity. A larger one is usually better served by a subpanel in the new space, fed by a feeder from the main panel, which keeps the new circuits close to where they are used and leaves room for the next change. If the addition brings a kitchen, a second bathroom, electric heat or a mini-split, the load calculation may say the existing service cannot carry it, and the right answer is a service upgrade planned with the addition rather than after it.

The wiring also has to be inspected at the right moment. The rough-in inspection happens before insulation and drywall cover the work, and a framing schedule that does not leave room for it costs days. We plan the electrical visits against the framing, insulation and drywall schedule so the inspector sees the work at the stage the rules require, and we coordinate the feeder route and the panel location with the builder before the framing is closed in.

Heating the addition is part of the electrical question. Electric baseboard, a mini-split or radiant floor heat each draw a different amount, and an addition heated from the existing boiler or furnace draws almost nothing. We ask how the new space will be heated and cooled before sizing the feeder, because that one choice can move the load more than every light and receptacle in the room combined.

In-Law Apartments and Accessory Units Need a Decision About Separate Service

An in-law apartment or accessory unit raises a question an ordinary addition does not, which is whether the unit shares the main house service or has its own. A shared service is simpler and cheaper and works well when the unit is small and the occupant is family. A separate meter makes sense when the unit is rented or when the owner wants the electricity billed separately, and it is arranged with the electric supplier, which has its own requirements for meter location and service size.

Either way the unit is wired as a dwelling in its own right. It needs its own kitchen and bathroom circuits, smoke and carbon monoxide alarms, interconnected where the rules require it, and a panel the occupant can reach without going through the owner space. The load calculation has to include the unit, which can push a 100 amp house past its limit. We settle service and metering early, because moving a meter or a panel after the walls are finished is the expensive way to learn the answer.

A Remodel Electrician Working With a General Contractor or Direct

Both are normal and the difference is who holds the sequence rather than who holds the electrical scope.

On most larger remodels there is a general contractor running the program, and the electrical fits into that sequence. We subcontract to GCs regularly and it is a straightforward arrangement: they hold the schedule, we hold the electrical scope and the permit for it.

On smaller jobs there is frequently no GC and the homeowner is coordinating trades directly. That works, and it puts the sequencing responsibility on whoever is holding the completion date. It is worth being honest about that, because the rough-in inspection is the gate every other trade waits on and somebody has to be watching it.

Either way the electrical scope comes from the appliance and fixture schedule, so that is the thing worth settling first regardless of who is running the job.

A remodel and addition electrician in NH has to plan the wiring before the walls close, because that is the cheapest time to get it right. A. Pro Electric, a licensed master electrician in Henniker, wires kitchens, bathrooms, basements and additions.