Home Appraisal: What It Is & How It Works

You've made an offer on a Calgary home. The seller accepted. Your mortgage broker is moving fast. And then, somewhere in the process, someone mentions a "home appraisal," and suddenly there's a new number on the table that could change everything.

What is a home appraisal? Why does your lender need it? And what happens if it doesn't come back the way you hoped?

Here's what every Canadian homebuyer, seller, and homeowner refinancing should know.

For informational purposes only. Always consult with a licensed mortgage or home loan professional before proceeding with any real estate transaction.

Quick Facts About the Appraisal Process

• Your lender bases your mortgage on the lower of the appraised value or the purchase price
• Appraisals are done by licensed appraisers; it's different from your real estate agent's market analysis
• An appraisal is NOT the same as a home inspection; you need both
• A low appraisal doesn't have to kill a deal—you have options
• Most appraisals in Alberta cost between $350 and $500, paid by the buyer
• Appraisals are typically valid for 60–90 days

So What Exactly Is a Home Appraisal?

A home appraisal is a professional, unbiased estimate of a property's fair market value.

A licensed appraiser visits the property, analyzes comparable sales, reviews current market conditions, and produces a written report with their opinion of the property's value. That number—the appraised value—plays a major role in how much your lender will give you.

In Canada, home appraisers are credentialed through the Appraisal Institute of Canada (AIC), the Canadian National Association of Real Estate Appraisers (CNAREA), or Ordre des évaluateurs agréés du Québec (OEAQ).

AIC appraisers have two main designations: CRA (Canadian Residential Appraiser), which covers homes with up to four units, and the AACI (Accredited Appraiser Canadian Institute), which covers properties ranging from residential to commercial to agricultural. Both are bound by the Canadian Uniform Standards of Professional Appraisal Practice (CUSPAP).

CNAREA has similar designations: DAR (Designated Appraiser Residential) and DAC (Designated Appraiser Commercial). These appraisers use USPAP. In Quebec, you have Chartered Appraiser/Évaluateur agréé (C.App./E.A.).

One thing to clear up right away: an appraisal is not a home inspection. An inspector evaluates the condition of the home—roof, foundation, plumbing, electrical, etc. An appraiser determines the home's value in dollars. Different purpose, different professional, different report. You likely need both.

Why Does Your Lender Require One?

Think of it this way: your lender is about to hand over hundreds of thousands of dollars to help you buy a property they've never seen. The appraisal is their way of confirming the home is actually worth what you're paying for it.

If you can't make your mortgage payments, the lender may need to foreclose and sell the property to recover their money. They want to know that what they're lending is backed by real value.

Here's the number that matters: your mortgage is based on the lower of the home appraisal value or the purchase price.

Say you offer $700,000 on a home for sale in Northwest Calgary. If the appraisal comes back at $660,000, your lender will only lend based on $660,000, leaving you to cover that $40,000 gap out of pocket.

When Do You Need a Home Appraisal?

The most well-known trigger is buying a home. But there are others:

Refinancing your mortgage: When you refinance or access equity, your lender needs to confirm the home's current value before adjusting your loan.

Home Equity Line of Credit (HELOC): Lenders need to know how much equity you've built before approving a HELOC, and that depends partly on the current value.

Estate settlements and divorce: When property needs to be valued fairly as part of asset division, an independent appraisal provides all parties with a credible starting point.

Private sales: Buying or selling without a real estate agent? An appraisal provides an objective valuation when there's no agent running comparable sales.

Challenging a property tax assessment: If your municipal assessment seems too high, a formal appraisal can support your case in a property tax appeal.

What Does an Appraiser Actually Look At?

Quite a bit. During a site visit—which typically takes 30 minutes to an hour—the appraiser evaluates:

The property itself: Square footage, number of bedrooms and bathrooms, layout, age, condition, appliances, finishes, and any renovations or upgrades. A recently renovated kitchen or finished basement can move the number. An aging roof or outdated electrical system can pull it down.

Location: Neighbourhood, proximity to schools, transit, parks, shopping, and community centres. Crime rates and environmental factors (such as flood zones) also play a role. A home backing onto a busy road or near industrial land will be valued differently than a comparable home on a quiet street.

Comparable sales ("comps"): This is the foundation of most residential appraisals. The appraiser finds recent sales of similar properties nearby—ideally within the last 90 to 180 days—and adjusts for differences like lot size. No two homes are identical, so adjustments are normal.

Market conditions: A rising, slow, or volatile market all factor into the comparable sales. However, when local housing market trends move quickly, appraisal values can sometimes lag behind what buyers are currently willing to pay. Real estate transactions can take months, and appraisers use data from complete transactions, not current listings.

How the Home Appraisal Process Works: Step by Step

Step 1: The lender orders the appraisal. In most cases, your mortgage lender arranges the appraisal after you have a conditionally accepted offer. They work with approved appraisal companies and select a certified appraiser for your area.

Step 2: The appraiser visits the property. They'll inspect the interior and exterior, take measurements and photos, note the condition of key systems, and record any notable features or deficiencies.

Step 3: Comparable sales analysis. Back at their desk, the appraiser researches recent sales of similar homes in your area, makes adjustments for differences, and builds a defensible opinion of value.

Step 4: The home appraisal report goes to your lender. The full written report—including the appraiser's valuation, supporting evidence, photos, and market commentary—is delivered to the lender, typically within 5 to 7 business days. In busy markets like Calgary, timelines can stretch a bit depending on appraiser availability.

Important note: despite paying for it, you might not be allowed to see the report. By AIC and CNAREA rules, it belongs to the entity that commissioned it, i.e. your lender. The appraiser's client is the bank, not you, and it's up to the bank whether to share.

Full Appraisal, Drive-By, or Desktop: What's the Difference?

Not every appraisal involves a full site visit. Here are the three types of house appraisals you might encounter:

Full appraisal: The appraiser physically visits the property, walks through the interior and exterior, takes photos, measures the space, and produces a detailed written report. This is the most thorough and most common type for uninsured home purchases (above 20% down) and major refinances.

Drive-by appraisal: The appraiser evaluates the home's exterior from the street, supplemented by available data. They don't go inside. Used in lower-risk situations where a full inspection isn't warranted.

Desktop appraisal: Entirely remote. The appraiser uses MLS data, tax records, satellite imagery, and other public information to estimate value without visiting at all. Commonly used for insured mortgages (if an appraisal is even required in the first place) or low-ratio renewals.

Your lender will determine which type is needed based on the transaction type, loan size, and their risk assessment.

How Much Does a Home Appraisal Cost in Canada?

For most residential properties, nationally speaking, expect to pay $300 to $600. In Alberta, typical costs range from $350 to $500 for a standard single-family home. In rural areas where comparable properties are scarce and travel time is longer, expect the higher end of the range. Property size and complexity add to the cost.

Who pays? In almost all cases, the buyer covers the appraisal cost. It's typically billed as part of your closing costs. Some lenders—particularly larger banks and mortgage brokers with high volume—are willing to waive appraisal costs. It's worth asking before you assume.

Home Appraisal vs. Home Inspection: Not the Same Thing

This confusion comes up constantly. Here's the clearest way to separate them:

	Home Appraisal	Home Inspection
Purpose	Determines market value	Evaluates physical condition
Who orders it	Your lender (usually)	You, the buyer
Who does it	Designated appraiser	Certified home inspector
What it produces	Dollar value of the property	Report on systems, defects, repairs
Is it required?	Yes, for most mortgages	Optional, but strongly recommended

You want both. The appraisal tells you and your lender what the home is worth. The home inspection tells you its condition. A home can appraise at full value and still have a failing furnace.

Appraised Value vs. Market Value (and What Your Agent's CMA Does)

Three different numbers. Three different purposes. Know what property valuation method matters for your needs.

Appraised value is the formal, documented opinion of a licensed appraiser. It's backward-looking, since it's based on what comparable homes have actually sold for. Lenders rely on this number.

Market value is what a willing buyer and a willing seller agree to in an open market. Rising buyer demand, multiple offers, and emotional attachment can push a sale price above appraised value. Market value reflects what people are actually paying right now.

A Comparative Market Analysis (CMA) is a report your real estate agent puts together using recent comparable data. It's an incredibly useful pricing tool, but it's not a certified appraisal. CMAs typically happen at the start of the selling process to help set a listing price, and you can often get a home value estimate for free. Appraisals happen closer to closing.

In a fast-moving Calgary market, all three numbers can differ, sometimes significantly. Your agent's CMA might support a $750,000 price. The market might push offers to $780,000. But if the appraiser's comps only support $730,000, that's where your lender draws the line.

What Happens If the Appraisal Comes In Low?

This is the scenario that causes the most stress and confusion. Let's break it down clearly.

Why does it happen? Appraisers use completed sales data, not current buyer enthusiasm. In a hot market with bidding wars, buyers may bid $50,000 over list price, but if no comparable home has actually sold at that level yet, the appraised value may not catch up. Low appraisals also happen when a home has unique features with no good comps, or when the seller priced the property aggressively.

What Should Buyers Do When an Appraisal Comes In Low?

If the appraisal comes in low, your financing is in jeopardy. Here are your options:

1. Request a Reconsideration of Value (ROV). This is a formal process, not a complaint. You (through your lender) can submit additional comparable properties that the appraiser may have missed, correct factual errors (e.g., incorrect square footage or missed renovations), or provide updated data.

2. Try a second appraisal through a different lender. While the appraisal process is highly systematic, it is, at its core, an opinion. A second opinion through a new lender can sometimes yield a different result, especially if the property has features that are hard to compare.

3. Renegotiate with the seller. The seller now knows their home didn't appraise. Any future buyer will likely face the same issue. Most sellers will reduce the price or split the difference rather than lose the deal. Present the appraisal report and have a direct conversation.

4. Cover the appraisal gap out of pocket. If the seller won't budge and the ROV goes nowhere, you can bridge the gap in cash. Not ideal, but sometimes it's the right call to keep a deal together. (Note: this cash is not applied to your down payment for loan purposes. It has no effect on your monthly payment.)

5. Walk away (if your conditions allow). This is why appraisal and financing conditions exist. If you're still within your condition period and the numbers don't work, you may be able to exit the deal without penalty. Never waive your financing condition in a competitive market unless you're paying cash; a low appraisal with no conditions can be a very expensive problem.

What Should Sellers Do If an Appraisal Comes In Low?

Review the appraisal for errors before deciding anything. Wrong square footage, missed upgrades, and poor comparable selection all happen. If the report contains errors, your buyer can submit an ROV, and you can support it with documentation. Your agent can provide the comps used to set your price.

If the value is genuinely lower than your price, renegotiating is usually smarter than risking the deal falling apart. Any future buyer is likely to face the same appraisal result, and when you’re sitting on the market, time is quite literally money. In addition, other buyers and their agents are watching the market. If your listing goes from "pending" back to "active," they'll know something went wrong, and that invites lower offers.

What Happens If the Appraisal is Higher Than the Offer?

The appraisal being higher doesn't mean the buyer has to pay more. The seller accepted the offer amount. Backing out would be a breach of contract.

Don't forget: the appraisal report belongs to the bank. While the seller can ask to see it, there's no reason for the bank to oblige unless the appraisal is low. In this situation, all that needs to be said is that the appraisal met value.

If you're the buyer, congratulations! You got a deal, and the appraisal gap translates to instant equity.

How to Help Your Appraisal Go Well

For Sellers

Clean the home and remove clutter before the appraiser arrives. First impressions affect perception even for professionals.

Make a list of all renovations and upgrades, including approximate dates and costs. Don't assume the appraiser will notice a new hot water tank, updated electrical panel, or recently replaced roof.

Be home and available to answer questions. If the appraiser can't find access to a utility room or wants to know when the furnace was last serviced, you want to be there. But don't hover. It's vital for the appraisal to be unbiased, and if the appraiser feels you're trying to influence the report, it can cause problems.

Gather documents that support your home's value: permits for additions, receipts from contractors, recent property tax assessments, surveys, or floor plans if you have them. If you have an unusual property that's difficult to find comps for, proactively providing any you're aware of may help you avoid an ROV later.

For Buyers

Your role is mostly to stay informed and responsive. Make sure the lender has everything they need to order the appraisal quickly. Delays in documentation can push back the appraisal timeline and affect your closing date.

If you've made a higher offer in a competitive situation, talk to your agent in advance about what to do if the appraisal doesn't support the price. Having a plan ready reduces panic when you need to move fast.

Frequently Asked Questions

How long does a home appraisal take?

The site visit typically lasts 30 minutes to an hour for a standard home. The full report—including comparable sales research and writing—is usually delivered to your lender within 5 to 7 business days. In busy markets or rural areas with limited comps, it can take longer.

How long is an appraisal valid for?

Most lenders accept appraisals for 60 to 90 days. If your closing date shifts or your financing takes longer than expected, check with your lender; you may need a fresh one.

Can I be present during the appraisal?

Technically, yes, both buyers and sellers can be present, though buyers being present is rare. Buyers may even be asked to stay away to avoid attempts to influence the appraiser. The homeowner can be available to answer questions. This also goes for the agents on both sides. (For example, the appraiser might ask the listing agent how they arrived at their listing price.)

Generally speaking, the best thing to do is to stand back and let the appraiser get on with things.

Can I challenge a low appraisal?

Yes, through a Reconsideration of Value (ROV) submitted via your lender. You'll need documented evidence: recent comparable sales, receipts for renovations, corrections to factual errors, etc.

Is an appraisal the same as market value?

Not exactly. Appraised value is based on a licensed professional's analysis of past sales and market conditions. Market value is what buyers are actually willing to pay right now. In a competitive market, sale prices can run ahead of appraised values, which is exactly why low appraisals happen in hot markets.

For informational purposes only. Always consult with a licensed mortgage or home loan professional before proceeding with any real estate transaction.

Ready to Move Forward?

Understanding the appraisal process means fewer surprises and better decisions, whether you're buying your first Calgary home, refinancing after a few years of equity growth, or preparing to sell.

If you have questions about where your home sits in today's market, or what to expect when your lender orders an appraisal, talking to an agent who knows Calgary's neighbourhoods and current sale data can save you a lot of guesswork. The numbers matter, and knowing how they work puts you in a much stronger position.