Garage remodeling: what to know

What the job involves, what changes the price, and what to ask a pro.

What garage remodeling is

A garage remodel upgrades a garage that stays a garage, with better floors, insulation, lighting, storage and electrical outlets. People need one when the garage is hard to use for parking, projects or storage, and they want it cleaner and more functional without changing its use.

Signs you need it

  • The floor is cracked, pitted or flakes at the surface, and you want a durable finish
  • The garage is hard to see in, with a single bulb or no lighting near the workbench
  • There are not enough outlets for tools, chargers or a workshop, so cords run across the floor
  • The walls and ceiling are bare and drafty, and the space is too cold to work in during winter
  • Storage is a mess and shelving or cabinets are needed to get the cars and tools off the floor

What the pro does

  • Inspect the slab for cracks, moisture and surface damage, then grind, patch and prepare the floor
  • Install the floor coating or topcoat system, with the cure time built into the schedule
  • Add insulation to the walls and ceiling where accessible, with a fire-rated drywall layer where the plan requires it
  • Run new circuits for outlets, lights and any dedicated tool or charger, with the panel load checked
  • Install storage cabinets, rails or racks on the walls and anchor them into studs
  • Finish the wall surfaces and trim, then test the lights, outlets and the garage door opener

What changes the price

Every job is different, so we do not publish prices. These are the things that move the quote up or down.

  • The condition of the slab and how much patching, grinding or leveling it needs
  • The floor coating type chosen, such as a sealer, a paint system or a multi-coat epoxy
  • Whether the walls are insulated, and how much of the ceiling and wall area is involved
  • Number of new outlets and circuits, and whether a dedicated higher-voltage circuit for a large tool or charger is needed
  • The storage system chosen, from simple shelving to full cabinets and overhead racks
  • The lighting type and the number of fixtures, including motion or switched controls

What a written quote should spell out

  • Slab prep steps named, including grinding, crack repair and any moisture test
  • Floor coating system with the number of coats and the product type listed
  • Insulation and drywall type and location, and any fire-rated layer included
  • Each electrical outlet and circuit listed with its purpose and the permit steps
  • Storage products listed with their anchoring method and the weight they are rated to hold

Questions to ask before you hire

  • How will you prepare the slab, and what happens if you find moisture coming through it?
  • What coating system are you using, and how long before the floor can take a car?
  • Will the new outlets and lights be on their own circuits, and who checks the panel load?
  • How do you anchor the storage to the walls, and where do you find the studs?
  • Will the garage door opener and the garage door need any work as part of this job?
  • Can you show a finished garage floor and storage job that is similar to what I have?

Red flags

  • The pro applies a floor coating over a slab that has not been checked for moisture
  • The quote for outlets does not say how the panel load is checked or which circuits are used
  • The storage is anchored into drywall with no studs or with plastic anchors only
  • The pro says the floor will be ready for a car the same day it is coated

What you can do yourself

Cleaning the floor, removing old shelves and moving stored items are reasonable homeowner tasks. Grinding concrete, installing new circuits and outlets, and changing the panel should be done by licensed professionals, and any work that involves a dust or chemical hazard should be done with the right protection.

Licenses and permits

Garage remodels with new wiring often need licensed electrical work and sometimes a permit, while floor coating and storage often do not. Check with your state or local licensing agency and your local building department to confirm the rules for your project.

Garage remodeling questions

Can I put a floor coating over a damp slab?

Usually not. Moisture under a coating can cause it to lift or bubble. Ask the pro to test the slab for moisture before the coating is chosen, and to tell you what happens if the test fails.

How many outlets should a garage workshop have?

Enough that tools and chargers do not run on cords across the floor. Ask the pro to plan the outlet positions around the workbench and the car bay, and to name the circuits that feed them.

Will insulating the garage change the heat?

It can help with comfort in the adjoining areas and in the garage itself, but it will not make an unheated garage warm. Ask what the insulation does for your use and whether heating is part of the plan.

About this guide

This national guide is written and checked by infinibell. Rules and conditions differ by place, so local pros are credited on guides for the cities they serve, not on national ones.

Edit history

How it works

  1. 1. Describe the job

    Pick the service, add your ZIP and a sentence about what is going on.

  2. 2. Pick the pros you want

    See screened pros who serve your ZIP and choose who you want to hear from.

  3. 3. They reach out

    They contact you the way you chose: phone, email or in-app messages.

More remodeling, painting and floors guides

Find a pro near you

Find a pro

About this guide

Request garage remodeling