The catch-all. Try first, then hire.

Door tune-ups, drywall patches, picture rails, leaky faucets, that one squeaky stair. The handyman trade is the one that catches everything else. This is how to know when to DIY and when to call someone.

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The handyman trade sits at the intersection of everything. It's not painting (single-discipline). It's not plumbing or electrical (licensed). It's the catch-all that keeps the house functioning. DIY scale: 2 out of 5. Most handyman work is approachable, but scale and structural issues push it into professional territory fast.

Twelve jobs that define the handyman trade

Handyman work spans everything the other trades don't specialize in. These twelve jobs appear in most homes repeatedly, and each teaches you something about how the house is built and how to maintain it.

1. How to patch a drywall hole

The most common handyman job you'll face. Small holes (under 3 inches) are fully DIY—spackle, sand smooth, prime, paint. The primer is non-negotiable. A patch without primer will absorb the first coat of paint and look dull or ghosted even after two coats of topcoat. The light across the wall will catch it like a wound. For holes 3 to 6 inches, use a self-adhesive mesh patch and joint compound, feather it wide, sand it flush, prime, then paint. Larger holes or textured drywall—anything over 6 inches or popcorn ceilings—lean toward a professional. Texture hides your sanding mistakes; flat drywall won't. Read more: How to Patch a Drywall Hole.

2. How to fix a squeaky floorboard

The noise drives you insane at 2 a.m. when your foot lands in exactly the wrong spot. It's not structural damage—it's usually just a board moving against the subfloor or a joist bearing the movement. From above: find the squeak, drive a screw at a 45-degree angle through the squeaking board into the joist below, ensure you catch solid wood (not drywall below). From below (if you have basement or crawl access): screw up from underneath into the squeak zone with a finish screw. The work itself is fast. Finding the exact source by elimination takes longer than the fix. Read more: How to Fix a Squeaky Floorboard.

3. How to stop a running toilet

A constantly running toilet wastes hundreds of gallons per week and sounds like a small waterfall in your guest bathroom. It's almost always the flapper (the rubber seal in the tank) or occasionally the fill valve. The flapper is the most common culprit—it's a $15 part and takes 5 minutes to swap. Before you do anything else: turn off the water, empty the tank by flushing, and look at what's inside. Most running toilets are one part away from fixed. If the flapper is warped or deteriorated, replace it. If the fill valve is stuck, clean it or replace it. Read more: How to Stop a Running Toilet.

4. How to fix a sticking door

A door that catches as it closes creates friction that wears the hinges and the frame. It can be the frame settling, the door swelling (humidity), or the hinge screws loosening over time. Find where it catches by opening and closing slowly, listening and feeling for the resistance point. If it's the top or bottom edge, you may need to plane or sand the edge flush. If it's the latch side, tightening the hinge screws might do it—but tighten with the door closed so the frame has weight on it, not hanging open. If the frame is off, you're into shim territory, which gets complex fast. Most edge-binding fixes are under an hour. Read more: How to Fix a Sticking Door.

5. How to replace a light switch

Kill the breaker first. Verify the power is off with a multimeter or by plugging a known-working lamp into the outlet and confirming it doesn't turn on. Loosen the terminal screws on the old switch, remove the wires carefully, loosen the new switch terminals, install the wires in the correct order (black on brass, white on silver, bare copper on the green screw), push it in gently, and tighten. The most important step is killing the breaker. The second most important is getting the wire order right. Everything else is mechanics. Read more: How to Replace a Light Switch.

6. How to hang a heavy mirror

A heavy mirror needs to be anchored into studs or with heavy-duty anchors rated for the weight. Use a stud finder to locate the studs behind the wall. If the mirror width spans a stud, great—drill into that stud directly. If not, use toggle bolts or molly bolts rated for the mirror weight. Most mirrors over 20 pounds shouldn't be hung on drywall anchors alone. Mark the holes, drill, install the anchors, hang the mirror, and secure the straps. A falling mirror isn't just an aesthetic disaster; it's a safety hazard. Read more: How to Hang a Heavy Mirror.

7. How to install a curtain rod

Measure twice, install once. Determine where you want the rod to sit (typically 4-8 inches above the window frame) and mark the bracket holes with a level. Use a stud finder; if brackets land on studs, drive the screws directly in. If they don't, use heavy-duty anchors rated for the curtain weight. Solid oak curtains with a thick rod weigh more than you expect. Install both brackets at the same height, slide the rod through, and hang the curtains. Asymmetrical brackets are the calling card of a rushed install. Read more: How to Install a Curtain Rod.

8. How to reseat a toilet

If the toilet is leaking from the base or rocking when you sit on it, the seal between the toilet and the floor is compromised. Turn off the water, flush to empty the tank, loosen the bolts at the base, and carefully rock the toilet side-to-side to break the old wax seal. Lift it away (it's heavier than it looks), remove the old wax ring, inspect the flange, place a new wax ring, and reset the toilet. Tighten the bolts evenly and carefully—over-tightening cracks the porcelain. Caulk around the base to seal any small gaps. Read more: How to Reseat a Toilet.

9. How to tighten a loose doorknob

A doorknob that spins freely but doesn't open the door is a loose set screw inside the knob itself. Look for a small screw on the shaft of the knob (often hidden under a decorative ring) and tighten it with a hex key. If the knob itself is loose on the spindle, tighten the screws on the escutcheon plate (the rose around the knob). If the whole assembly is loose in the door, tighten the bolts on the latch mechanism from the inside. A single hex key fixes most doorknob issues in under a minute. Read more: How to Tighten a Loose Doorknob.

10. How to replace a cabinet hinge

Cabinet doors that sag or don't close right are often hinges that have loosened or stripped. If the screws are still tight but the door sags, the hinge cup may be damaged or the mounting surface (usually plywood) is torn. Tighten the adjustment screws on the hinge first—most hinges have three adjustment points (side-to-side, up-and-down, depth). If that doesn't work, you may need to replace the hinge or move it slightly to a new location on the door, filling the old holes with toothpicks and wood glue. Read more: How to Replace a Cabinet Hinge.

11. How to fix a leaky faucet cartridge

A faucet that drips or leaks from the handle usually has a worn cartridge—the valve assembly that controls water flow. Turn off the water (under the sink), remove the handle (usually one screw), and pull out the cartridge. Take it to the hardware store to match the part number, buy an identical replacement, and swap them. It's a 15-minute job that costs $20 and stops the leak immediately. The cartridge is the most common wear item on kitchen and bathroom faucets. Read more: How to Fix a Leaky Faucet Cartridge.

12. How to fix a wobbly ceiling fan

A ceiling fan that wobbles when running is either imbalanced or has loose mounting bolts. Turn it off and let it stop completely. Check that the mounting bolts (the four bolts connecting the fan assembly to the bracket) are tight. If they are, the blades may be imbalanced. Loosen one blade at a time and check that the blade-to-housing gap is even on all sides. Tighten any loose blade bolts. If wobbling persists, one blade may be warped. Look for a bent or cracked blade and replace it, or replace all five blades as a set. A safely mounted fan should spin without perceptible movement. Read more: How to Fix a Wobbly Ceiling Fan.

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When this is DIY

The rule of thumb for handyman work: anything you can reach from a ladder, anything that doesn't involve major structural issues or load-bearing elements, and anything that won't send water to the ceiling below. DIY-safe territory: patching holes up to 3 inches (spackle and primer), squeaky floors from above or below (one or two screws), running toilets (usually the flapper, $15 fix), sticky doors that catch at the edge (plane or sand the edge), replacing light switches after killing the breaker, hanging shelves into studs (find them with a $30 stud finder), tightening loose hinges and cabinet hardware, installing curtain rods into studs, doorknob adjustment with a hex key. Most of these jobs finish in under an hour, cost under $30 in parts, and have a clear recovery path if something goes sideways. The "while we're at it" trap is real: one job becomes two becomes eight. That's when you call someone. But isolated, focused jobs? The risk is low, the cost is low, and the reward is knowing you read the house and fixed it.

When to call a pro

Call a pro when: you're looking at patches over 6 inches (especially in plaster or textured drywall), multiple squeaks that seem to share a joist (structural), anything involving removing the toilet from the floor and resetting the wax seal (one mistake and water leaks through to the ceiling), doors that bind because the frame itself has shifted (requires shimming or structural diagnosis), any electrical work beyond a single switch (which means you might be near a breaker panel issue), hanging heavy mirrors in old plaster (plaster anchors are unreliable), plumbing below the visible trap (you need to know what's behind the wall), or structural creaks that move with temperature (those tell a story about settling that needs a professional eye). The "while we're at it" phenomenon is the hidden cost of DIY: one job becomes two becomes eight. Once the list hits 8 or more small fixes, that's a full day for a handyman at $80-150/hour, and they'll complete it faster, to code, and with a warranty. They've done it 500 times. You'll do it once. The time difference is significant. The cost of getting it wrong—water damage, electrical hazard, frame damage—is much higher.

The toolkit for handyman work

A handyman toolkit isn't a specialty toolkit. It's 8-10 things you use once a week, kept in a single plastic bin, ready to grab and go. You're not a specialist—you're the person who knows enough to fix the thing that's broken right now, and organized enough to find the right tool without hunting through the garage.

Stud finder (electric, battery-powered). Finds the studs behind the wall in seconds. The LCD shows you where to drill. No stud finder? You'll spend 10 minutes knocking on walls and guessing. $25-60 depending on brand. Not a magic wand, but close enough to magic that it earns space in the bin.

Multi-tool (oscillating). Cuts drywall, sands edges, grinds metal. The one power tool that earns shelf space in a handyman setup. Corded or cordless—cordless is nicer for smaller jobs. $70-140. Pair with a variety of blades and sanding pads ($15-20 for a set).

Torpedo level, 24 inch. Straightness you can trust. Aluminum body, magnetic so it sticks to metal studs and anchors. Durable, accurate, lasts decades. $35. Check it against a flat surface every year; levels drift.

Drywall saw (keyhole saw). Cuts holes in drywall for patches, cuts notches for pipes and wires. Sharp and efficient. $8. Keep it sharp. A dull saw binds and splinters.

Hex key set (ball-end, metric and SAE). Loose doorknobs, cabinet hinges, IKEA furniture, everything. Ball-end keys let you reach at an angle. Have them in the bin and also hanging by the door. $15-25 for a good set.

Spackle (lightweight) and joint compound (drywall mud). Lightweight spackle for speed on small holes (sets in minutes), compound for finishing and feathering edges. $8-12 total. Use spackling for anything under 1 inch, compound for larger patches or feathering coats.

Putty knife set (2 inch, 4 inch, 6 inch). Spreading, scraping, finessing. The 4-inch is your workhorse. Stainless steel resists rust better than carbon steel. $20-35 for a quality set. A bent putty knife is useless; store them flat.

Wall anchors (toggle bolts, molly bolts, drive anchors). Know which one for your wall type and weight requirement. Not all drywall anchors hold the same. Toggle bolts hold 25+ pounds, mollys hold 15-20 pounds, drive anchors hold 5-10 pounds. Keep a variety assorted in a small box. $6-12.

Miscellaneous: hammer, screwdrivers (flat and Phillips), adjustable wrench, slip-joint pliers, tape measure (25 ft), pencil, safety glasses, work gloves. These round out the core kit. Nothing exotic. The bin fits everything, weighs under 15 pounds, and lets you approach 95% of the things that break in a house.

Common mistakes that cost time and money

Patching drywall with compound only, no primer. The patch absorbs your topcoat and looks dull or splotchy even under two coats of paint. Sand it smooth, prime it with a stain-blocking primer, then paint. Always. A $10 can of primer saves a repaint job. Hanging heavy things into drywall when the stud is 2 inches away. The level looks right, but that picture rail or shelf is now hanging on a drywall anchor rated for 10 pounds, and you've put 50 pounds on it. It will fall. Use a stud finder first, or knock test the wall to locate studs. If you must hang off drywall, verify the anchor rating against your load. Not turning off the water before unscrewing a toilet. The water doesn't stop. It goes everywhere, through your floor, to the ceiling below, and you're now explaining water damage to your insurance company. Shut-off valve is under the tank. Turn it clockwise until it stops. Wait 30 seconds for the tank to empty. Then proceed. Tightening cabinet hinges with the door hanging open. The door sags during adjustment. You tighten the hinge to what looks right, close the door, and it binds against the frame. Close the door first, adjust the hinge screws, reopen to check alignment. Tighten, close, check. Repeat. Swapping a light switch without turning off the breaker. You're alive. Barely. Shaking hands afterward. The breaker takes 10 seconds to flip. Verify with a multimeter or by plugging in a known-working lamp. Using a dull saw for something that needs a sharp blade. You push harder, force it, the blade heats up, binds, kicks back, and your knuckles hurt for a week. Replace saw blades when they're tired. A $4 blade is cheaper than a hospital visit. Oversanding a drywall patch until it's concave. You create a depression that spackle can't fill evenly. Sand carefully, feather the edges, and stop before you think you're done. The compound will shrink as it dries; you want it slightly proud of the surface, then a final light sand. Batch jobs that grow into remodels. One ceiling repair becomes two, then you notice the paint's peeling, then you're thinking about lighting, then you're 40 hours into something that was supposed to be a weekend. Set a scope. Close the door on scope creep.

Sister trades and related guides

If handyman is the catch-all floor you stand on, these are the specialized trades that go deep. Each one handles a different system of the house. Painting handles walls, ceilings, trim, cabinets—the visible surfaces that set mood and protect. Plumbing handles the supply lines bringing water in and the drain lines taking it out—invisible until it fails. Electrical handles power distribution, outlets, switches, panels—the flow of current that everything plugs into. Pest control handles infestations, rodents, wildlife—the uninvited guests. Roofing handles the envelope that keeps weather out. HVAC handles the climate—heating, cooling, air quality. General contracting handles the big picture—when multiple systems need coordination, permits, structural changes. Landscaping handles the grounds outside—drainage, soil, hardscape, plants. Each trade is deep. Handyman is where they all meet. Knowing the boundary lines—when to stay in handyman territory and when to hand off—is the most important skill.

• Painting — walls, ceilings, trim, cabinets, doors, finishes
• Plumbing — supply lines, drains, fixtures, repair, installation
• Electrical — wiring, outlets, switches, panels, circuits, safety
• Pest Control — insects, rodents, wildlife, prevention, removal
• Roofing — shingles, flashing, ventilation, sealing, repair
• HVAC — heating, cooling, air quality, efficiency, maintenance
• General Contracting — structural work, permits, renovation coordination
• Landscaping — grounds, drainage, hardscape, planting, soil

What makes the handyman trade unique

Handyman is the only trade where "I fixed it myself" is the whole point. Not for pride, though there's that. It's because the work teaches you to read your house. That squeak in the floor tells you something about the subfloor and the beam beneath it. That door binding tells you something about humidity and frame settling. That running toilet tells you something about wear and maintenance cycles. You learn to listen to the house. You learn to look—to see patterns in what's breaking and why. You learn that most things break for reasons you can diagnose if you pay attention. And you learn, crucially, that some of those reasons are worth calling someone else to fix. That's not failure. That's honesty about your skill level and the stakes. The handyman mindset is this: try first, then hire. Not "do everything yourself." Not "always hire someone." But "know the difference." That's the trade that bridges all the other trades. It's the one you learn first.