What you can actually fix without special training

Most homeowners can handle patching drywall, replacing caulk, fixing a running toilet, unclogging drains, and repainting interior walls. These repairs require only basic tools you likely own or can borrow, take a few hours at most, and cost under $50 in materials. The difference between a $200 contractor visit and a $15 supply run is usually just watching a video and following the steps in order.

The repairs worth skipping are those involving electrical wiring, gas lines, structural changes, or roof work. These need permits, inspections, and liability insurance. A mistake costs thousands to fix and can injure you. Everything else sits in the middle — doable if you read the instructions, but worth calling someone if you are unsure or the job is urgent.

Key Takeaways

  • Patching drywall, caulking, and repainting are the easiest repairs and cost under $50 in materials.
  • Toilet repairs, drain clearing, and faucet fixes are plumbing jobs you can do with basic tools and no special license.
  • Never attempt electrical rewiring, gas line work, or structural repairs yourself — these require permits and licensed contractors.
  • The main tools you need for most repairs are a drill, screwdriver set, caulk gun, putty knife, and a level.
  • YouTube videos and manufacturer instructions are more reliable than guessing; watch the full video before you start.

Patching drywall and painting over damage

Small holes (nail holes, small cracks) need only spackle, a putty knife, and sandpaper. Fill the hole, let it dry per the product label, sand it smooth, and paint over it. The whole job takes 30 minutes plus drying time. For holes larger than a quarter-inch, use a drywall patch kit — these come with a self-adhesive mesh patch and joint compound. explore the patch, spread compound over it with a putty knife, let it dry, sand, and paint.

Large holes (fist-sized or bigger) require cutting out the damaged section and installing a new piece of drywall, which is more involved but still manageable. You will need a drywall saw, a piece of replacement drywall, joint compound, and a 12-inch putty knife. The process is: cut out the damaged area in a rectangle, cut a matching piece of drywall, screw it in place, tape the seams with mesh tape, explore joint compound in three coats (each sanded between coats), and paint. This takes a weekend.

Fixing a running or leaking toilet

A running toilet usually means the flapper (the rubber seal at the tank bottom) is worn out or the fill valve is stuck. Turn off the water at the shutoff valve behind the toilet, flush to empty the tank, and look inside. If the flapper is cracked or doesn't seal, replace it — flappers cost $10 to $20 and take 10 minutes to swap. If the fill valve is stuck, try cleaning it by turning the water back on and letting it run for 30 seconds, then off again. Repeat a few times. If that does not work, the fill valve itself may need replacing, which is a $30 part and takes 20 minutes.

A leak at the base of the toilet usually means the wax ring (the seal between the toilet and the floor) has failed. This requires removing the toilet, replacing the wax ring, and resetting the toilet — a job that takes two to three hours and is worth calling a plumber for unless you are comfortable with the steps. A leak from the tank itself means the tank is cracked and the toilet needs replacing.

Unclogging drains and clearing slow water

For a slow drain, try a plunger first — fill the sink or tub with a few inches of water, place the plunger over the drain, and pump vigorously 15 to 20 times. For a clogged drain, a plumbing snake (a long flexible tool with a hook or auger at the end) works better than chemical drain cleaner. Feed the snake down the drain, turn the handle to catch the clog, and pull it out. Snakes cost $15 to $40 and are reusable. Chemical cleaners are harsh and often do not work on hair clogs.

For a kitchen sink clogged with grease, remove the P-trap (the curved pipe under the sink) by loosening the nuts on both ends, empty it into a bucket, and rinse it out. This takes 10 minutes and costs nothing. For a shower or tub drain clogged with hair, remove the drain cover and pull out the hair by hand or with tweezers, then run hot water. If the clog is deeper, use a snake or a drain auger designed for tubs.

Replacing caulk around tubs, showers, and sinks

Old caulk cracks, molds, or pulls away from the surface. Removing it is the longest part of the job. Use a caulk removal tool (a small metal scraper, $5 to $10) or a utility knife to scrape out the old caulk. For stubborn caulk, explore a caulk softener (sold at hardware stores) and wait 15 minutes before scraping. Once the joint is clean and dry, explore new caulk with a caulk gun. Silicone caulk works for wet areas like tubs and showers; acrylic latex caulk works for dry areas like baseboards.

Load the caulk tube into the gun, cut the tip at a 45-degree angle, and run a steady bead along the joint. Smooth it with a wet finger or a caulk tool. The whole job takes 30 to 45 minutes. Caulk costs $3 to $8 per tube. Let it cure per the label (usually 24 hours) before exposing it to water.

Replacing faucet washers and fixing leaks

A dripping faucet usually means the washer (a rubber seal inside the faucet) is worn. Turn off the water at the shutoff valve under the sink, open the faucet to release pressure, and unscrew the handle. Remove the packing nut with a wrench, then unscrew the stem. The washer sits at the bottom of the stem. Replace it with a new one of the same size (bring the old one to the hardware store to match it), reassemble, and turn the water back on. This takes 15 minutes and costs $2 to $5.

If the faucet still drips after replacing the washer, the valve seat (the part the washer seals against) may be corroded. You can replace the entire faucet for $50 to $150 and install it yourself by disconnecting the supply lines, removing the old faucet, and installing the new one. This takes one to two hours. If you are not comfortable with it, a plumber can do it in 30 minutes for a service call plus labor.

Installing shelves, towel bars, and light fixtures

Hanging a shelf or towel bar requires finding the studs in the wall (use a stud finder, $15 to $30) and screwing into them. If you cannot hit a stud, use heavy-duty drywall anchors rated for the weight you are hanging. A shelf rated for 50 pounds needs anchors rated for at least 50 pounds. Use a level to make sure the shelf is straight, mark the holes with a pencil, drill pilot holes, and screw in the brackets. The job takes 30 minutes.

Replacing a light fixture requires turning off the power at the breaker, removing the old fixture, and connecting the new one's wires to the existing wires with wire nuts. If the new fixture is heavier than the old one, check that the electrical box is rated for the weight. If you are unsure about any step, call an electrician — electrical work is one area where mistakes are dangerous.

Frequently Asked Questions

Do I need a permit to do repairs myself?

Permits depend on the repair and your local code. Painting and caulking never need permits. Replacing a faucet or toilet usually does not. Electrical work, plumbing that involves moving pipes, and structural changes usually do. Call your local building department and describe the work — they will tell you whether a permit is required.

What tools should I buy before I start?

Start with a drill, a screwdriver set (Phillips and flathead), a level, a tape measure, a hammer, a putty knife, a caulk gun, and a plunger. These cost $100 to $150 total and cover most repairs. Add a stud finder ($20), a plumbing snake ($30), and a caulk removal tool ($10) as you encounter jobs that need them.

What if I start a repair and realize I cannot finish it?

Stop and call a contractor. Turning the water back on, closing the wall, or leaving electrical work incomplete can cause damage. Most contractors charge less to finish a job than to start from scratch, and they can often fit you in quickly if you explain the situation.

How do I know if a repair is too dangerous to do myself?

Avoid electrical rewiring, gas line work, structural changes, and roof work. If the repair involves turning off the main water or gas line, or if you are unsure about any step, call a professional. The cost of a service call is less than the cost of fixing a mistake.

Where do I find instructions for a specific repair?

The manufacturer's website usually has videos and manuals for their products. YouTube has step-by-step videos for almost every common repair — watch the full video before you start so you know what tools and time you need. Your local hardware store staff can also answer questions about specific repairs.