Should I hire a contractor or do it myself? Here is the short answer: about 70 percent of the work in a typical home renovation is genuinely DIY-feasible, and the other 30 percent should almost always be handed to a licensed trade. The deciding factors are not skill or courage. They are whether a mistake is reversible, how expensive a failure is, whether the law requires a permit or a licensed electrician, and what your own time is worth.
That is the whole framework. Most of the arguments you have had with yourself about a project are really arguments about those four things, dressed up as confidence or laziness.
I run through this decision constantly for our own house and for people who ask me the same question, so I have watched the pattern repeat. The projects people regret are almost never the ones they lacked talent for. They are the ones where the failure mode was expensive, invisible, or illegal to fix yourself. The projects people regret not doing are the ones a pro would have finished in two hours while they lost a weekend and a rented tool.
This guide is written for Edmonton-area homeowners and renters, and much of it applies to any Canadian house. If you are weighing a specific job right now, the verdict table below will give you the answer in about a minute.
Table of Contents
- The 70/30 rule is the shortest honest answer
- Seven questions to ask before you touch anything
- The project verdict table: DIY, DIY with caution, or hire a pro
- Home projects worth doing yourself
- Projects you should never DIY
- What DIY really costs once you count everything
- What hiring a pro really costs
- Permits, inspections and unpermitted work in Edmonton and Alberta
- Older Edmonton homes change the answer
- The hybrid route: split the project so the crew never idles
- How to vet a contractor and what a real quote must contain
- The five DIY mistakes that cost the most to fix
- When to stop and call a pro at the 60 percent mark
- Frequently Asked Questions
- The bottom line on DIY vs hiring a pro
The 70/30 rule is the shortest honest answer
About 70 percent of typical home remodel work is DIY-feasible, and the remaining 30 percent should almost always be hired out. That is the 70/30 rule, and it comes from NAHB data cited by The Remodel Guide, which also reports that roughly 30 percent of professional remodel jobs originate as failed DIY attempts.
That second number is the one worth sitting with. It does not mean 30 percent of DIY projects fail. It means a large share of the work professional crews end up doing was started, and finished badly, by an owner. A crew walking into a half-done job spends its first day undoing somebody else’s work before it starts the actual job, and that day is billed at the same rate as the productive ones.
The 30 percent is not random. It clusters hard around four things: work that touches your home’s safety systems, work that requires a permit, work where water or structure is involved, and work that needs a tool most homeowners will never use twice.
There is a second rule people ask about, sometimes called the 30 percent rule for renovations, which says contractors add roughly 30 percent to your material costs in a remodelling quote. Both rules are shortcuts. The useful move is to stop using either and score the specific job in front of you.
Seven questions to ask before you touch anything
Run any project through these seven questions before you buy a single material. If you answer no or unsure to the first three, stop and get a quote first.
- Can I physically do this for the whole duration? Survey respondents in an ImproveNet poll reported jobs taking an average of 22 hours longer than they expected, and roughly half said the work was physically harder than planned. A ceiling that needs three ladders and a week of evenings is a different decision from a wall that needs a roller and an afternoon.
- What is the quality standard I am holding myself to? A 55 percent majority of that same group said the biggest disappointment was that the finished work did not look good. Decide now whether you want it to look professional, or simply to look finished.
- Is a mistake here reversible, or does it hide inside a wall? Reversible means you can sand it back, unclip it, or patch it without opening structure. A short wire inside a finished wall is not reversible.
- What is the failure cost? Compare the cost of being wrong against the cost of hiring. If a mistake costs more than the quote you were trying to avoid, the DIY is not frugal, it is a gamble with your own money.
- Is there injury or damage risk beyond paint on a floor? Live panels, gas lines, structural members, heights and lead paint all change the answer.
- Do I already own the tools, or will I buy or rent them for this one job? A wet saw, a flooring nailer, a carpet cleaner and a pressure washer are not one-time purchases. A paint roller is.
- Is my timeline fixed by someone else? A leak needs to stop today. A backsplash can wait for a free Saturday in October. Fixed external deadlines turn a hobby into overtime, and overtime is the point where DIY stops saving money.
The first four are the framework most homeowners get right. The last three are what separate a comfortable decision from an expensive one, because tools and rushed weekends are the two inputs people forget to price.
The project verdict table: DIY, DIY with caution, or hire a pro
Here is the project-by-project answer in one place. Costs are planning ranges in Canadian dollars for a typical Edmonton-area home, materials only for the DIY column, and all-in for the pro column. Treat them as a starting spread to sanity-check a real quote, not as a quote.
| Project | Verdict | DIY range (CAD, materials) | Pro range (CAD, all-in) | The specific failure mode |
|---|---|---|---|---|
| Interior wall painting | DIY | 120 to 300 | 450 to 1,400 per room | Tape lines and drips that show under raking light |
| Exterior repaint | Hire a pro | 350 to 700 | 2,500 to 6,000 | Height work and uneven coats on lap siding |
| Luxury vinyl plank or laminate flooring | DIY | 400 to 1,200 | 1,800 to 5,000 | Uneven subfloor that makes every plank rock |
| Hardwood floor refinishing | Hire a pro | 300 to 500 (rental) | 4,000 to 9,000 | Over-sanding, which cannot be undone |
| Drywall patch and small repairs | DIY | 40 to 120 | 200 to 500 | Texture that does not blend with the old coat |
| Full sheetrock hang and tape | Hire a pro | 500 to 900 | 3,500 to 8,000 | Visible seams and butt joints in every lit room |
| Interior door and trim painting | DIY | 60 to 150 | 250 to 700 | Drips on the face frame, hard to make invisible |
| Cabinet hardware swap | DIY | 80 to 300 | 400 to 900 | Drilled-through doors when the jig is off |
| Interior cabinet refinishing | DIY with caution | 250 to 600 | 2,000 to 6,000 | Brush marks that stay visible in raking light |
| Peel-and-stick backsplash | DIY | 80 to 250 | 450 to 1,200 | Wax build-up on the wall that ruins adhesion later |
| Tiled backsplash | DIY with caution | 200 to 600 | 1,200 to 3,500 | Grout haze, lippage, and cuts that show at the outlet |
| Demolition and hauling | DIY | 100 to 400 (bags, dumpster) | 800 to 3,000 | Hidden hazards inside the wall you opened |
| Light fixture swap | Hire a pro | 60 to 200 | 180 to 450 | Wiring errors and an overloaded box |
| Add a new outlet or switch | Hire a pro | 40 (material) | 250 to 600 | No ground, buried junction, missing permit |
| Smart thermostat install | Hire a pro | 150 to 300 | 200 to 500 | 24V wire that needs an adapter, C-wire buried in plaster |
| Faucet or toilet swap | DIY with caution | 80 to 400 | 250 to 700 | Stripped supply valve, and supply valves fail later |
| Running a new drain line | Hire a pro | 100 to 300 | 700 to 2,000 | Slope and vent errors that do not show for years |
| Water heater or furnace replacement | Hire a pro | n/a | 1,500 to 6,000 | Gas and venting errors, or a bad flue install |
| Shower or tub surround | Hire a pro | 400 to 1,000 | 2,500 to 7,000 | Water behind the wall, which then damages framing |
| Roof repair or shingling | Hire a pro | 200 to 600 | 2,000 to 12,000 | Leaks into the attic and premature re-roofing |
| Load-bearing wall removal | Hire a pro | n/a | Structural engineering plus framing | Floor sag and a failed home inspection at resale |
| Basement bathroom build | Hire a pro | 1,500 to 3,500 | 8,000 to 22,000 | Waterproofing, venting and code issues stacked together |
| Fence build | DIY | 400 to 1,500 | 1,500 to 5,000 | Posts set too shallow and leaning by winter |
| Deck build | Hire a pro | 1,000 to 3,000 | 5,000 to 20,000 | Ledger attachment and load calculations, plus permits |
| Landscaping, beds and raised planters | DIY | 200 to 1,500 | 1,000 to 6,000 | Almost no failure cost |
| Asbestos, lead paint or knob-and-tube work | Hire a pro | n/a | Assessment plus abatement | Serious health exposure and liability for the family |
Two patterns jump out. The DIY column is cheap on finishes you can sand back and expensive on everything hidden. And the pro column has a floor, not a rate: a one-hour plumber call still costs a minimum service charge, which is why the small jobs in the middle of that table are the ones worth splitting.
Home projects worth doing yourself
These are the jobs where the failure cost is low, the tools are ordinary, and the savings survive contact with a real invoice. Most Edmonton households can handle all of them.
Painting interior walls, trim and doors
Painting is the clearest win in the entire list. A room is a weekend, the materials are a fraction of the labour, and every mistake is fixable with a wet rag. A diychatroom poster put it plainly: if your time is worth a hundred dollars an hour and you have to take the day off work, very few DIY projects make sense, and painting is one of the few that still does. The pro cost is dominated entirely by crew hours, which is exactly the labour you are substituting.
The catch is finish quality, not safety. Cut in edges, keep a wet edge on the roller, and do not rush the second coat in a heated house in January.
Click-lock flooring
LVP and laminate are close to a perfect beginner project. No nails, no glue, no wet saw unless you are cutting around awkward obstacles, and the whole room can be done in a day. Rent an edger or plan a week of evenings instead.
Read the subfloor, not the flooring. That is the one real failure mode. A cupped subfloor will make every plank rock no matter how carefully you click it, and by then you have already installed the floor. In an older Edmonton house, check for moisture before you buy anything.
Drywall patches, nail pops and small holes
This is the clearest DIY case in the list because the pro price for a small patch is mostly a minimum visit charge, and the material is a few tens of dollars. One r/HomeImprovement commenter described their personal rule plainly: they try to do as much work on their own house as possible, but drywall and texture they always hire a pro for. That is a sensible split. Patching a nail pop is not texture work.
Demolition and cleanup
Tearing out is the best labour trade a homeowner can make, and contractors know it. Almost nobody prices demolition into a small quote because it eats their slowest, least efficient hours. If you are demolishing a bathroom or a bedroom anyway, doing it yourself, bagging it, and having a dumpster delivered can remove a meaningful line item from the contractor quote.
Just do not let the demo phase go one stud further than the pro quote you are working toward. Openings, not destruction, is the job.
Cabinet hardware, caulking and simple backsplash
Swapping pulls and knobs takes an afternoon and a drill template. Re-caulking around tubs and trim is the same skill and the same cost of failure, which is nearly zero. Peel-and-stick backsplash is a rental-grade weekend project as long as the wall is clean and wax-free, and wax build-up is the reason a later tile job will not adhere.
Yard work, beds, planters and fences
Landscaping has almost no failure cost, which puts it firmly on the DIY side no matter how big it is. Fences sit next door: a post set 300 mm too shallow in Edmonton freeze-thaw cycles is the difference between a straight fence and a leaning one, so if you have never set a post before, this is a good one to pay for the demo and layout at least.
Projects you should never DIY
These are the 30 percent. The common thread is that a mistake is either dangerous, invisible until it causes damage, or illegal for you to fix without a licence.
- Electrical work. Anything beyond swapping a like-for-like fixture. The failure is a fire behind drywall, and unpermitted work can also complicate an insurance claim later.
- Gas piping and gas appliances. A furnace, a gas line, a new cooktop hookup. No exception for a quick install.
- Structural work. Removing or cutting a load-bearing wall, moving a beam, changing a column. Get an engineer and a permit.
- HVAC and refrigerant lines. Handling refrigerant legally requires certification, and the charge is the easy part.
- Roofing. Height plus the fact that an improper install shortens the life of an expensive roof.
- Shower and wet-room waterproofing. Water that gets behind the wall is the single most expensive residential repair category, and it is entirely hidden until framing rots.
- New drain and vent lines. Slope and venting are code items that inspectors check and that you cannot see once the wall is closed.
- Asbestos, lead paint and knob-and-tube wiring. In Edmonton this is not a theoretical list. It is a real one in neighbourhoods full of homes built before the 1980s.
What DIY really costs once you count everything
Materials are the smallest part of most DIY projects. Here is what else lands on the invoice.
Your time, priced honestly
Do the arithmetic once, properly. Take the total hours you expect, add 50 percent because the survey data says 22 hours over, then multiply by what an hour of your time is actually worth. If you are on a salaried job at 100 dollars an hour and the project takes 20 hours, that is 2,000 dollars of opportunity cost before you buy a single roller.
This is the single most useful calculation in the article, and it is the one most people skip. There is a good version of it in circulation from a homeowner’s comment quoted by NBC News Better: they like being hands-on for things they can do well and relatively quickly, but they pass off to professionals when a job would take eight hours to both learn and complete, because the professional who knows what they are doing takes one hour.
That is the whole trade-off in one sentence. Your hourly rate is not the number on your paycheque. It is your paycheque divided by the hours you would rather not work.
Tools: buy, rent, or borrow
One-use tools should be rented or borrowed. A pressure washer, a carpet cleaner, a wet saw, a floor sander, a wallpaper steamer and a tile saw all earn their cost through repeat use, and most households never get there. In 2026 the tool rental counter at a big-box store is a legitimate part of a renovation budget, not a sign you are underqualified.
Material waste
First-time renovators consistently underestimate waste. Add 10 to 15 percent to your material list for trim, cuts, and the tile you will snap because the wall is not plumb. On a 60 dollar box of flooring that is a 60 dollar mistake, which is fine. On a 2,000 dollar custom order it is a Sunday trip back to the supplier.
Prep work and rework
Prep is half the job on almost every finish project and it is the part people skip to get to the fun part. Skipping it does not remove the work, it relocates it. In survey data, 17 percent of respondents said their project ended up costing more than expected, and for that group the overrun averaged about double the original estimate. Those are the redo jobs, and the redo lands in a different part of the house from the one you thought you were fixing.
What you do not get
You also lose the warranty on workmanship, the call-back if something moves in a season, and the insurance if a mistake causes damage. None of those are worth much on a paint job and a great deal on a shower.
What hiring a pro really costs
Hiring is not free money either. Articles that only count labour are not telling you the truth.
- Material markup. Contractors buy at trade pricing and re-sell with a markup, typically 15 to 30 percent on materials they source. It is usually cheaper for you to buy fixtures, appliances and paint yourself, and the pro will accept that as long as it is agreed in writing before the work starts.
- Minimum service charges. A single-visit trade such as a plumber or an electrician bills a minimum regardless of whether the job is 30 minutes. For small electrical items, buying the fixture and using a one-hour booking is often the same money, just spent differently.
- Scheduling friction. Crews run in blocks. A single small item added to a busy month may sit for weeks, which is a real cost if you need it fixed.
- Change orders. Extra work once a crew is on site costs more per hour, because the crew is already mobilized. Decide the scope in writing before anyone starts, and put a hard stop on how much extra you are willing to authorize.
- Communication overhead. You are project-managing. Decisions you did not know you had to make arrive at 7:30 in the morning on a Tuesday.
None of this makes hiring a bad deal. It just belongs in the comparison, and most DIY arithmetic leaves it out entirely.
Permits, inspections and unpermitted work in Edmonton and Alberta
Permits are not a suggestion, and skipping one is the most expensive DIY mistake that does not look expensive on the day you do it.
Edmonton and Alberta follow the Alberta Building Code. A building permit is generally required for structural changes, most electrical and plumbing work, new bathrooms, mechanical changes, decks over a certain height, and several exterior or demolition situations. When in doubt, the City of Edmonton permit office is the first call to make, and the answer you get there is the one that matters.
What happens if you skip it:
- Insurance. A claim tied to unpermitted or uninspected work can be denied, or the claim can be reduced after the fact.
- Resale. A home inspector and a buyer’s lender can both ask for permits and completion certificates. Undisclosed unpermitted work can show up as a condition in an offer.
- Safety. The inspection is not a revenue grab. It is the only independent check on a job that, by definition, you are finishing blind.
- Insurance on the trade. Many licensed trades will not work in a house with known unpermitted electrical or structural work, which means the problem does not stay in the past.
One r/HomeImprovement thread captured a familiar sequence: someone got a bid, decided the number was too high and did the job themselves, then called the same pro months later to fix it. That is the most expensive possible version of the DIY-versus-hire question, because you paid the materials twice, the pro twice, and you still do not have the original work you wanted.
Older Edmonton homes change the answer
Edmonton has a lot of stock built before 1980, and in those houses the decision stops being purely about skill.
- Asbestos in older tile, vinyl sheet flooring, some ceiling textures, pipe insulation and old roofing felt.
- Lead paint in trim, doors and any pre-1978 painted surface, which is common enough in some neighbourhoods to be the default assumption.
- Knob-and-tube wiring and early two-wire circuits with no ground, plus service entrance parts that are now well past service life.
- Cast iron and galvanized steel drain lines that crumble when disturbed and make a small plumbing job unpredictable.
None of that means the house is a no-go for a homeowner. It means demolition stops being the free, riskless labour trade it appears to be, and a pre-1970s demo may be the one job on your list that is worth a professional assessment before you touch a hammer. Some of these materials are also legally regulated for anyone disturbing them, and doing it yourself can create a liability problem for the occupants rather than just a mess.
The hybrid route: split the project so the crew never idles
For most mid-sized renovations, the correct answer is neither option. You do part of it, the pro does the licensed part, and the sequencing decides whether the project saves money or becomes a two-crew-costly fumbled affair.
The rule is simple: do the tasks that sit outside the crew’s critical path, and finish each one completely before the crew arrives.
- Before anyone arrives: strip furniture, remove doors and hardware, clear the work area, patch the drywall you are already going to patch, and prime everything that can be primed.
- Do the demo yourself if the walls are known-safe, then get the framing and any electrical or plumbing rough-in done by the pro.
- Do the dry work: tile the bathroom floor area if the pro approves the substrate, install flooring outside wet areas, and hang shelving or blocking.
- Do all the painting and caulking yourself last, after the pro is done and gone. This is the single biggest labour line in most quotes and the easiest one to take over.
- Leave the pro a clean, empty workspace and a written list of what you have already done, so their time is production time.
The reverse order is what creates the classic horror story: the pro finishes, you paint over their caulking and touch-ups, and then a season later the seam fails and somebody has to guess who did what. Doing the finish work yourself after the crew leaves keeps responsibility clean and gives you the savings.
How to vet a contractor and what a real quote must contain
When the answer is hire, the quality of the hiring decision matters as much as the money. Five steps, in order.
- Get three written quotes for the identical scope. One quote is an opinion, three is a market.
- Ask what the quote excludes. Demolition, disposal, patching, painting, permit fees, the supply valve behind the wall, the extra length of flooring, and the outlet relocation. Most bad surprises are exclusions, not fraud.
- Confirm the scope in writing: materials, model numbers, how many coats, what gets patched, what gets left, and the start and completion window.
- Verify licensing, insurance and references. Ask for proof of liability coverage and ask to speak to two recent customers on jobs of similar scope and size, not a luxury build.
- Set a change-order rule in advance and agree a maximum you will authorize without pausing the job.
A real quote should state the total, not just an hourly rate. It should itemize labour and materials separately so you can see the markup, name the materials being used, and carry a payment schedule that gives you leverage until the work is complete. Cash-only deals and pressure to sign today are both reasons to slow down and get the second quote.
The five DIY mistakes that cost the most to fix
These are the failures that turn a savings project into a loss, roughly in order of how often they wreck a budget.
- Skipping prep. Painting over unwashed walls, tiling over a wet subfloor, or installing flooring over an uneven surface. The prep is cheap and the consequence shows up in a year.
- Underestimating time. The single most common regret, at an average of 22 hours over estimate. It does not just cost time, it costs the motivation to finish correctly.
- Adding scope mid-project. A quick job becomes a renovation because you are already there with the tools. The change order discipline applies to yourself too.
- Working on unpermitted or uninspected work. Not visible, not expensive today, and expensive at resale or on a claim.
- Using the wrong tool or the wrong method for a material. Driving screws into pre-1980 plaster lath, cutting asbestos tile with a dry saw, using a drywall screw gun on a ceiling. This is the point at which the one-time rental stops being optional.
Notice that none of these are “I am not skilled enough.” They are process failures, and they are far easier to avoid with a plan than with talent.
When to stop and call a pro at the 60 percent mark
A Quora thread asked the question this section answers: at what point do you throw in the towel on a DIY renovation? The common answer is earlier than people expect, and it has a shape.
About 60 percent done is where the failure usually hides, because the first 60 percent is the part that is visible and forgiving. When you are past the point where a mistake can be corrected with a sanding block, but before the project looks done, stop.
What to do when you get there:
- Photograph everything before anything gets covered up. Insulated walls, junctions and subfloor are only inspectable once.
- Write down exactly what is done and what is not, in plain language. A pro can price the remainder accurately from that, and it prevents you from paying to redo completed work.
- Get one quote to finish, not one quote to take over. “Finish this job from here” is a smaller and cheaper scope than “renovate this room.”
- Get that quote before the wall closes. Once it is closed, the remaining scope doubles.
- Ask about permits at the same time. If the project already requires one, you want it pulled before the work resumes.
Stopping at 60 percent is not a failure. It is the cheapest possible moment to buy help, and it is far better than the alternative described in the survey data, where 8 percent of respondents caused damage and 6 percent injured themselves.
Frequently Asked Questions
Should I hire a contractor or do it myself?
About 70 percent of typical home remodel work is DIY-feasible, and the remaining 30 percent should almost always be hired out. Decide by four factors: is a mistake reversible, how expensive is a failure, does the law require a permit or a licensed trade, and what is your time worth. If a failure would cost more than the quote you are trying to avoid, hiring is the cheaper option.
What is the 30% rule for renovations?
The 30 percent rule is the shorthand for the roughly 30 percent of remodeling work that should almost always be hired out, drawn from NAHB data: about 70 percent of typical remodel work is DIY-feasible, and the remainder involves safety systems, permits, water and structure, or specialty tools. A separate contractor-side rule of the same name says labour and overhead are added to materials at roughly 30 percent, so check which one is being quoted before you rely on it.
What are the biggest home renovation mistakes?
The costliest DIY mistakes are skipping prep work, badly underestimating time, expanding scope mid-project, doing work that required a permit without getting one, and using the wrong tool or method for the material. In a survey of 2,000 Americans reported by NBC News Better, 63 percent regretted at least one project, jobs ran an average of 22 hours longer than expected, and 17 percent ended up costing more, with that group averaging roughly double the original estimate.
Should I paint myself or hire a professional?
Paint the interior yourself. The materials are a fraction of the pro price, the work is a weekend, and every mistake is reversible with a wet rag. Hire a pro for exterior work, where height adds real risk, for texture or sprayed finishes, and for any job where you want a show-home result. A room painted in a weekend is the highest return-on-effort project on almost any homeowner’s list.
Do I need a permit for DIY work in Alberta?
A building permit is generally required for structural changes, most electrical and plumbing work, new bathrooms, mechanical changes, and several exterior and demolition situations, under the Alberta Building Code and City of Edmonton rules. Work done without a permit can complicate an insurance claim and can surface at resale during a home inspection. When you are unsure, call the City of Edmonton permit office before you start rather than after.
Can I be my own general contractor?
On a small job, yes: most people running a renovation are already acting as their own project manager. On anything involving permits, licensed trades, insurance, or multiple subcontractors, the coordination is the part that creates liability, not the trades themselves. A workable middle ground is to keep control of scheduling and the finish work while handing the code-sensitive trades to licensed professionals.
The bottom line on DIY vs hiring a pro
About 70 percent of your renovation is worth doing yourself, and about 30 percent is not. The line is not drawn by skill, it is drawn by reversibility, failure cost, permits and the value of your time. Do the visible, forgiving work yourself, buy help for anything hidden, wet, structural or licensed, and do all your own finish work after the crew leaves.
Pick one project from the table above, price it with your own hourly rate included, and compare it to a real written quote. That single comparison settles the question faster than any amount of research.
Updated for October 2026 for Edmonton-area homeowners. Costs are planning ranges, so confirm against current local material pricing and at least three written quotes before committing.