THE STRAIGHT ANSWER
Why We Aren't the Cheapest
And why our clients are glad we aren't.
FROM THE FOUNDER
"The most expensive renovation is the one you have to do twice."
— Mike Brock, Founder, Cornerstone Construction.
KNOW WHAT YOU ARE COMPARING
An Estimate, a Quote, and a Proposal Are Not the Same Thing
When you ask three contractors for a price, you might get back three completely different types of documents. Most homeowners do not know the difference. This matters — because you cannot compare them as if they are equal. They are not.
- A preliminary guess at what a project might cost
- No breakdown of materials, labour, or scope
- Subject to change after demo starts
- Every surprise becomes a change order
- Every change order comes out of your pocket
An estimate is a guess. A polished, confident-sounding guess — but a guess.
- More detailed than an estimate
- Includes a fixed price in theory
- Many contractors call an estimate a quote
- Without a written scope it is still just a number
- What was included? You find out after demo.
A quote without a defined scope and signed contract is just a number on a page.
- Detailed multi-page document — typically 4 to 8 pages
- Complete scope of work with inclusions and exclusions
- Full material specifications and cost breakdown
- Committed start date and end date with penalty if missed
- 5-year written workmanship warranty included
The number on the proposal is the number on the invoice. No surprises. No exceptions.
"When you compare our proposal to a competitor's estimate, you are not comparing the same thing. You are comparing a commitment to a guess."
WHAT YOU ARE REALLY PAYING FOR
What a Professional Contractor's Price Actually Covers
Most homeowners assume contractor markup is profit. It is not. Here is what is actually inside a professional contractor's price — and what disappears when a contractor bids low enough to win on price alone.
Every licensed Ontario contractor carries liability insurance, WSIB coverage, and active certifications. These are not optional — they protect you if something goes wrong on your property. A contractor who bids low enough to cut these is not saving you money. He is transferring his risk to you.
Every Cornerstone job has one dedicated representative on site every single day — Mike Brock or his site manager. We deliberately limit the number of jobs we take on so every client gets our full attention from start to finish. Most contractors are managing six jobs at once. We are managing yours.
Cheap materials fail. Imported drywall can emit chemicals that corrode pipes and wiring. Imported shingles fail within five years. Cheap cabinet veneers warp and delaminate. Cheap plumbing fixtures leak into walls causing mould, warped floors, and structural damage. The repair bill always exceeds the original savings.
Your renovation involves a plumber, electrician, tile setter, drywaller, and painter — minimum. We vet every trade, schedule them in the correct sequence, and supervise their work daily. When something goes wrong with a cheap contractor, nobody is accountable because nobody owns the project.
Any work involving plumbing, electrical, or structural changes requires a permit in Ontario. Permits mean inspections. Inspections mean the work is done to code. Contractors who skip permits are not saving you money — they are creating a liability that sits on your property title and could void your home insurance.
Drywall dust contains silica — a known carcinogen. Without proper containment it travels through your HVAC system into every room in your house. At Cornerstone, HEPA air scrubbers run continuously on demo days. MERV 5 filter pads go on every vent. Sealed negative pressure containment at every transition. Standard on every project.
Demolition creates debris. That debris needs to be loaded, transported, and disposed of properly. Labour for loading and unloading, fuel, vehicle maintenance, bin rental, and disposal fees are real costs. Contractors who do not account for these cut corners on cleanup — or pass the cost to you mid-project.
Most contractors purchase materials before they receive payment. A contractor without proper markup cannot pay suppliers on time. Suppliers who are not paid stop delivering. Projects that run out of money stop. A low-bid contractor who runs out of cash on your job does not come back. You are left with a half-finished renovation and no recourse.
WHAT YOU ARE ACTUALLY BUYING
Our Clients Do Not Buy Renovations. They Buy Four Things.
When you strip away the finishes, the fixtures, and the floor tile — what our clients are really paying for comes down to four things that no cheap contractor can sell you.
Certainty
The price on the proposal is the price on the invoice. Not a starting point. Not a rough number we will firm up later. The number you sign is the number you pay — unless you choose to change the scope in writing.
Most contractors lowball the number to win the job and make it back on change orders. At Cornerstone the price is fixed because we do the diagnostic work upfront. We walk the space, assess the scope, and build the proposal around what the job actually costs — before we ask you to commit to anything.
Fixed Price — Price Lock Guarantee
The number on the proposal is the number on the invoice. No surprises. No change orders unless you change the scope in writing. No mid-project phone calls asking for more money.
Written Detailed Construction Schedule
Before any work begins you receive a written construction schedule that breaks down every phase of your project — what is happening, who is doing it, and when it will be done. You know the start date. You know the end date. You know every milestone in between. No guessing. No vague timelines. A written commitment you can hold us to.
The $300 Per Day Penalty
If we miss the agreed completion date we pay you $300 for every day we are late. That consequence is in the contract before we start. When your timeline is tied to a financial penalty it tends to be respected.
Certainty is not a feature. It is the foundation everything else is built on.
Accountability
We do what we say and we say what we do. That is not a slogan. It is how we operate on every single project. If we say we will be there Monday we are there Monday. If we say the job takes three weeks it takes three weeks. If something changes we tell you before you find out yourself.
$300 Per Day Late Penalty
If we miss the agreed completion date we pay you $300 for every day we are late. That is in the contract before we start. Not a verbal promise. Not something we offer after you complain. A written financial consequence that puts our money where our mouth is. Most contractors have no consequence for running late. We do.
5-Year Workmanship Warranty
When we hand over your project we are not done. We stand behind our structural and finish work for five full years. If something is not right we come back and fix it. The industry standard is 12 months. We offer 60. That is not marketing — it is how confident we are in the work.
Local Roots
We live here. We work here. We raise our families in Durham Region. When Mike Brock finishes your renovation he will see you at the grocery store, the arena, and the school. That is accountability no contract can manufacture. We cannot afford to do poor work in our own community.
Communication
You never have to chase us. Your client portal is updated every evening with what happened today, what is happening tomorrow, and where your money stands in real time. Every change order is documented and approved in writing before any work changes. You are never in the dark.
We do what we say and we say what we do. Every time. No exceptions.
Sanctuary
Your home is not a job site. It is where your family lives, sleeps, and breathes. Before demo starts on any Cornerstone project, full site protection goes in and it stays in until the last day.
Floor & Surface Armour
Guardia Pro floor protection goes down on every hardwood, tile, and stone surface before a single tool comes in. HEPA vacuumed first. Nothing touches a finished surface without a protective barrier underneath it.
Sealed Dust Containment
Floor-to-ceiling polyethylene barriers at every transition. Heavy-duty zipper doors for crew access. Tuck tape sealed at every seam. MERV 5 filter pads on every HVAC vent before demo starts. HEPA air scrubbers running continuously on demo and drywall days. Drywall dust contains silica — a known carcinogen. Without proper containment it travels through your ductwork into every room in the house. A cheap contractor does not account for this in his price because he is not paying for it. Your family is.
The 30-Minute Daily Reset
The last 30 minutes of every workday are dedicated to site organisation. All garbage removed to the bin. Tools, cords, and materials packed up. Work zone HEPA vacuumed. Floor protection and barriers inspected and re-taped. You come home to a construction zone that is controlled, organised, and respects the fact that you still live there.
Sanitary Reset — Twice a Week
The designated site washroom is cleaned and sanitised twice a week. Every shift. No exceptions. We are guests in your home and we treat it that way.
Your home stays your home throughout the entire build. That is the Sanctuary Standard.
A Frictionless Process
Most contractors hand you a list of trades and wish you luck. You become the project manager — chasing the plumber, coordinating the electrician, following up on permits, and wondering why nobody showed up on Tuesday. You hired a contractor to avoid exactly this. With a cheap contractor you get the stress anyway.
Full Turnkey Solution
One team. One contract. Everything handled. From pulling the building permits to the final white-glove clean, Mike Brock manages the entire trade ecosystem. Plumber, electrician, tile setter, drywaller, painter — all vetted, scheduled, and supervised by us. You make one phone call. We handle everything else.
One Person on Site Every Single Day
Mike Brock or his site manager is on your job every single day. We deliberately limit the number of projects we take on at one time so your job gets our full attention from demo to handover. Most contractors are managing six jobs at once. Nobody is watching yours. At Cornerstone somebody is always watching yours.
Digital Client Portal
You get 24/7 access to your project schedule, progress photos, financial documents, and all communications via your secure client dashboard. You always know what happened today, what is happening tomorrow, and exactly where your money stands — without making a single phone call. You stay fully informed while remaining entirely hands-off.
The White-Glove Handover
When the job is done we do not just hand you the keys. We walk the entire project with you, complete a full punch list, deliver your Owner's Manual with all specs, warranties, and maintenance instructions, and leave the space cleaner than we found it.
You hired us so you would not have to manage this yourself. We take that responsibility seriously.
APPLES TO APPLES? NOT EVEN CLOSE.
What You Are Actually Comparing
When you put a low bid next to a Cornerstone proposal you are not comparing prices. You are comparing what is included against what was left out to make the number look attractive.
FEATURE
LOW BID CONTRACTOR
CORNERSTONE CONSTRUCTION
Pricing Document
Single-page estimate — subject to change
Detailed multi-page proposal — fixed before work starts
Price Certainty
Changes after demo — change orders add up fast
Price Lock Guarantee — the number you sign is the number you pay
Construction Schedule
Verbal timeline — no written commitment
Written detailed construction schedule delivered before work begins
On-Time Accountability
No consequence for running late
$300 per day financial penalty if we miss the completion date
Site Presence
Owner managing 4 to 6 jobs at once — rarely on site
Mike Brock or site manager on your job every single day
Trade Management
Whoever is available — unsupervised
Vetted, licensed trades scheduled and supervised daily
Floor Protection
Drop cloth if you are lucky
Guardia Pro on all hardwood, tile, and stone — HEPA vacuumed first
Dust Control
Open site — dust travels everywhere
Sealed negative pressure containment at every transition
HVAC Protection
Nothing — silica dust goes straight into your ductwork
MERV 5 filter pads on every vent installed before demo starts
Air Quality
Silica and drywall dust in your home — your family breathes it
HEPA air scrubbers running continuously on demo and drywall days
Daily Site Reset
Left how it was — tools, debris, dust
Last 30 minutes of every day dedicated to site organisation and cleanup
Sanitary Standard
No standard
Site washroom cleaned and sanitised twice a week
Permits
Often skipped — liability sits on your property title
All permits pulled and managed by Cornerstone
Communication
Chase them for updates
Client portal updated every evening — 24/7 access to your project
Warranty
Gone when they leave — 12 months if you are lucky
5-year written workmanship warranty on every project
Handover
Keys and a handshake
Full punch list walkthrough, Owner's Manual, and white-glove clean
Insurance & WSIB
Not always verified — you carry the risk
Fully licensed and insured Ontario corporation — certificates on request
"You are not comparing apples to apples. You are comparing apples to liabilities."
BEFORE YOU SIGN ANYTHING
Six Things Every Homeowner Should Do Before Hiring a Contractor
Whether you hire Cornerstone or not — these are the six things you should verify before any contractor sets foot in your home. Most homeowners skip these. Most homeowners regret it.
Verify They Specialise in Your Project Type
A contractor who does everything masters nothing. Ask specifically how many kitchens, bathrooms, or basements they have completed in the last 12 months. Ask to see the photos. Anyone can say they do it. Not everyone can show you they have done it — repeatedly, recently, and well.
Check Their Insurance and WSIB Coverage
Ask for a certificate of insurance and a WSIB clearance certificate before anyone sets foot in your home. If they cannot produce these documents on request they are not properly covered. If something goes wrong on your property without proper coverage you are the one holding the liability.
Demand a Written Proposal — Not Just a Number
Any contractor can give you a number. Demand a written document that defines exactly what is included, what is excluded, what materials are being used, and what the timeline is. If they cannot or will not provide a detailed written proposal before you sign anything — walk away.
Check References — Not Just Reviews
Ask for two or three past clients you can speak to directly. A five minute phone call with a past client tells you more than 50 Google reviews. Ask about communication, cleanliness, timeline, and how problems were handled when they came up. Because they always come up.
Understand How They Handle Change Orders
Every renovation has the potential for surprises. Ask how they handle unforeseen conditions before you sign anything. A professional contractor has a written change order process — work stops, the change is documented, you approve it in writing, then work continues. A cheap contractor calls you mid-project and asks for more money.
Ask Who Is on Site Every Day
Is the person you are meeting the person who will be on your job every day? Or will they hand your project to a crew you have never met and check in twice a week? At Cornerstone Mike Brock or his site manager is on your job every single day. That is not standard in this industry. It should be the first question you ask every contractor you meet.
THE HONEST TRUTH
We Are Not the Cheapest Contractor in Durham Region. We Choose Not to Be.
I built Cornerstone because I grew tired of seeing homeowners in Durham get burned by the lowest bid lottery. In our industry, cheap prices always mean cut corners — whether it is skipping the waterproofing behind your shower walls, leaving drywall dust to choke your family's furnace, or running six jobs at once so nobody is watching yours.
Cheap contractors cannot afford to use Schluter waterproofing systems, Mapei polymer-modified grouts, SharkBite Max fittings, HEPA air scrubbers, or a dedicated site manager on your job every single day. They price to win the job. We price to protect your investment.
We do what we say and we say what we do. We show up when we say we will. We finish when we say we will — or we pay you $300 for every day we do not. We stand behind our work for five years because we are confident enough in it to make that commitment in writing.
We are not the cheapest. We choose not to be. Because the most expensive renovation is the one you have to do twice.
Mike Brock
Founder, Cornerstone Construction.
Oshawa, Ontario — Serving Durham Region since 2017
READY TO DO THIS ONCE
Book Your Free Project Diagnostic
We will walk your space, understand your priorities, and deliver a detailed multi-page proposal — not a single-page estimate — with a fixed price before any work begins.
No obligation. No pressure. Just clarity on exactly what your project costs, how long it takes, and what you get when you choose to do it once and do it right.
Serving Oshawa · Whitby · Bowmanville · Ajax · Pickering · Newcastle · Clarington · Scarborough · Stouffville · Peterborough