"Texas, often referred to as the Lone Star State, is a thriving hub for economic growth and innovation, making it an attractive destination for commercial real estate investment." - Chris Evans

Your Survey and Your Appraisal Don't Agree on the Square Footage. Now What?

The appraisal report lists the site at 4.2 acres. The survey that just came back says 3.9. On a deal where value, loan proceeds, and sometimes even the purchase price itself are tied to acreage or building square footage, a gap like that doesn't stay a rounding error for long — it becomes a question your lender wants answered before they'll move forward.

Discrepancies between a survey and an appraisal happen more often than buyers expect, and understanding why they occur — and which document actually controls — can keep a closing on schedule instead of stalling out over a number nobody planned to argue about.

Why the Two Documents Sometimes Disagree

An appraiser and a surveyor are measuring different things, using different methods, for different purposes. The appraiser is typically relying on public records, prior surveys, tax assessor data, or a general site visit — not a precise, instrument-based measurement of the property. A current survey, by contrast, is a legal, professionally certified determination of the property's actual boundaries and area.

Common sources of the mismatch include:

• The appraiser relied on county assessor records or an older survey that doesn't reflect the property's current, actual boundaries

• The property includes easements, right-of-way dedications, or floodway areas that a new survey excludes from usable acreage but an older figure didn't account for

• Building square footage was measured using different conventions — gross building area versus rentable square footage, for example — leading to a discrepancy that has nothing to do with the survey itself

• A prior partial sale or boundary line adjustment was never reflected in the records the appraiser used

Why Lenders Care So Much About This

For a lender, acreage and square footage aren't just descriptive details — they often feed directly into the valuation methodology behind the loan amount. A meaningful gap between the appraisal's assumed area and the survey's certified area can mean the appraisal was built on inaccurate inputs, which puts the resulting value opinion in question right as underwriting is trying to finalize.

This is one of the reasons commercial lenders increasingly want the survey completed early enough that the appraiser can work from accurate figures, rather than ordering the appraisal and survey on separate, uncoordinated tracks and reconciling the difference later.

What Typically Happens When a Gap Is Found

• A small, explainable difference — often due to rounding, methodology, or minor boundary refinement — is usually resolved with a brief written clarification from the surveyor or appraiser.

• A more significant gap may require the appraiser to revise the valuation using the survey's certified figures, which can affect the loan amount the lender is willing to extend.

• A gap tied to a title or boundary issue — an easement, an encroachment, an unresolved boundary discrepancy — needs to be resolved through title and survey channels before the appraisal can be finalized on accurate information.

The Survey Is Generally the More Reliable Figure

When the two documents disagree, the survey is typically treated as the more authoritative source for actual boundary lines and area, since it's a certified, current, instrument-based measurement rather than a desktop estimate. That doesn't mean the appraisal is wrong to have used a different starting figure — it means the appraiser needs the updated information to make sure the valuation reflects reality.

How to Avoid the Late-Stage Scramble

The most effective way to prevent this from becoming a closing-week problem is sequencing: order the survey early enough that its certified figures are available to the appraiser before the valuation is finalized, rather than running both processes in parallel and hoping they land on the same number.

If you already have the appraisal in hand and the survey comes back with a different figure, raise it with your lender and the appraiser immediately rather than waiting to see if it resolves itself. Most appraisal discrepancies of this kind are resolvable with a straightforward revision — the risk is in letting it sit unaddressed until it's discovered by someone else later in underwriting, when there's less time to fix it cleanly.

Watch for This on Refinances, Not Just Purchases

This issue isn't limited to acquisitions. On a refinance, the original appraisal or survey on file may be years old, and the property itself may have changed — a partial sale, an added structure, a boundary line adjustment that was never formally recorded. If your existing loan file has an outdated acreage figure baked into it, ordering a current survey before your refinance appraisal is completed can prevent the same kind of last-minute reconciliation that trips up purchase transactions.

Keep the Numbers Talking to Each Other

A survey and an appraisal serve different purposes, but on a commercial transaction they need to agree on the basic facts of the property. Getting an accurate, current survey into the appraiser's hands early is a simple step that prevents a disagreement over acreage or square footage from turning into a delay nobody budgeted time for.

Have a commercial transaction where the survey and appraisal need to be coordinated? Contact South Texas Surveying with the property location, your lender's timeline, and whether an appraisal is already underway, so our team can help get accurate figures to everyone who needs them before it becomes a closing-week issue.

The appraisal report lists the site at 4.2 acres. The survey that just came back says 3.9. On a deal where value, loan proceeds, and sometimes even the purchase price itself are tied to acreage or building square footage, a gap like that doesn't stay a rounding error for long — it becomes a question your lender wants answered before they'll move forward.

Discrepancies between a survey and an appraisal happen more often than buyers expect, and understanding why they occur — and which document actually controls — can keep a closing on schedule instead of stalling out over a number nobody planned to argue about.

Why the Two Documents Sometimes Disagree

An appraiser and a surveyor are measuring different things, using different methods, for different purposes. The appraiser is typically relying on public records, prior surveys, tax assessor data, or a general site visit — not a precise, instrument-based measurement of the property. A current survey, by contrast, is a legal, professionally certified determination of the property's actual boundaries and area.

Common sources of the mismatch include:

• The appraiser relied on county assessor records or an older survey that doesn't reflect the property's current, actual boundaries

• The property includes easements, right-of-way dedications, or floodway areas that a new survey excludes from usable acreage but an older figure didn't account for

• Building square footage was measured using different conventions — gross building area versus rentable square footage, for example — leading to a discrepancy that has nothing to do with the survey itself

• A prior partial sale or boundary line adjustment was never reflected in the records the appraiser used

Why Lenders Care So Much About This

For a lender, acreage and square footage aren't just descriptive details — they often feed directly into the valuation methodology behind the loan amount. A meaningful gap between the appraisal's assumed area and the survey's certified area can mean the appraisal was built on inaccurate inputs, which puts the resulting value opinion in question right as underwriting is trying to finalize.

This is one of the reasons commercial lenders increasingly want the survey completed early enough that the appraiser can work from accurate figures, rather than ordering the appraisal and survey on separate, uncoordinated tracks and reconciling the difference later.

What Typically Happens When a Gap Is Found

• A small, explainable difference — often due to rounding, methodology, or minor boundary refinement — is usually resolved with a brief written clarification from the surveyor or appraiser.

• A more significant gap may require the appraiser to revise the valuation using the survey's certified figures, which can affect the loan amount the lender is willing to extend.

• A gap tied to a title or boundary issue — an easement, an encroachment, an unresolved boundary discrepancy — needs to be resolved through title and survey channels before the appraisal can be finalized on accurate information.

The Survey Is Generally the More Reliable Figure

When the two documents disagree, the survey is typically treated as the more authoritative source for actual boundary lines and area, since it's a certified, current, instrument-based measurement rather than a desktop estimate. That doesn't mean the appraisal is wrong to have used a different starting figure — it means the appraiser needs the updated information to make sure the valuation reflects reality.

How to Avoid the Late-Stage Scramble

The most effective way to prevent this from becoming a closing-week problem is sequencing: order the survey early enough that its certified figures are available to the appraiser before the valuation is finalized, rather than running both processes in parallel and hoping they land on the same number.

If you already have the appraisal in hand and the survey comes back with a different figure, raise it with your lender and the appraiser immediately rather than waiting to see if it resolves itself. Most appraisal discrepancies of this kind are resolvable with a straightforward revision — the risk is in letting it sit unaddressed until it's discovered by someone else later in underwriting, when there's less time to fix it cleanly.

Watch for This on Refinances, Not Just Purchases

This issue isn't limited to acquisitions. On a refinance, the original appraisal or survey on file may be years old, and the property itself may have changed — a partial sale, an added structure, a boundary line adjustment that was never formally recorded. If your existing loan file has an outdated acreage figure baked into it, ordering a current survey before your refinance appraisal is completed can prevent the same kind of last-minute reconciliation that trips up purchase transactions.

Keep the Numbers Talking to Each Other

A survey and an appraisal serve different purposes, but on a commercial transaction they need to agree on the basic facts of the property. Getting an accurate, current survey into the appraiser's hands early is a simple step that prevents a disagreement over acreage or square footage from turning into a delay nobody budgeted time for.

Have a commercial transaction where the survey and appraisal need to be coordinated? Contact South Texas Surveying with the property location, your lender's timeline, and whether an appraisal is already underway, so our team can help get accurate figures to everyone who needs them before it becomes a closing-week issue.

The appraisal report lists the site at 4.2 acres. The survey that just came back says 3.9. On a deal where value, loan proceeds, and sometimes even the purchase price itself are tied to acreage or building square footage, a gap like that doesn't stay a rounding error for long — it becomes a question your lender wants answered before they'll move forward.

Discrepancies between a survey and an appraisal happen more often than buyers expect, and understanding why they occur — and which document actually controls — can keep a closing on schedule instead of stalling out over a number nobody planned to argue about.

Why the Two Documents Sometimes Disagree

An appraiser and a surveyor are measuring different things, using different methods, for different purposes. The appraiser is typically relying on public records, prior surveys, tax assessor data, or a general site visit — not a precise, instrument-based measurement of the property. A current survey, by contrast, is a legal, professionally certified determination of the property's actual boundaries and area.

Common sources of the mismatch include:

• The appraiser relied on county assessor records or an older survey that doesn't reflect the property's current, actual boundaries

• The property includes easements, right-of-way dedications, or floodway areas that a new survey excludes from usable acreage but an older figure didn't account for

• Building square footage was measured using different conventions — gross building area versus rentable square footage, for example — leading to a discrepancy that has nothing to do with the survey itself

• A prior partial sale or boundary line adjustment was never reflected in the records the appraiser used

Why Lenders Care So Much About This

For a lender, acreage and square footage aren't just descriptive details — they often feed directly into the valuation methodology behind the loan amount. A meaningful gap between the appraisal's assumed area and the survey's certified area can mean the appraisal was built on inaccurate inputs, which puts the resulting value opinion in question right as underwriting is trying to finalize.

This is one of the reasons commercial lenders increasingly want the survey completed early enough that the appraiser can work from accurate figures, rather than ordering the appraisal and survey on separate, uncoordinated tracks and reconciling the difference later.

What Typically Happens When a Gap Is Found

• A small, explainable difference — often due to rounding, methodology, or minor boundary refinement — is usually resolved with a brief written clarification from the surveyor or appraiser.

• A more significant gap may require the appraiser to revise the valuation using the survey's certified figures, which can affect the loan amount the lender is willing to extend.

• A gap tied to a title or boundary issue — an easement, an encroachment, an unresolved boundary discrepancy — needs to be resolved through title and survey channels before the appraisal can be finalized on accurate information.

The Survey Is Generally the More Reliable Figure

When the two documents disagree, the survey is typically treated as the more authoritative source for actual boundary lines and area, since it's a certified, current, instrument-based measurement rather than a desktop estimate. That doesn't mean the appraisal is wrong to have used a different starting figure — it means the appraiser needs the updated information to make sure the valuation reflects reality.

How to Avoid the Late-Stage Scramble

The most effective way to prevent this from becoming a closing-week problem is sequencing: order the survey early enough that its certified figures are available to the appraiser before the valuation is finalized, rather than running both processes in parallel and hoping they land on the same number.

If you already have the appraisal in hand and the survey comes back with a different figure, raise it with your lender and the appraiser immediately rather than waiting to see if it resolves itself. Most appraisal discrepancies of this kind are resolvable with a straightforward revision — the risk is in letting it sit unaddressed until it's discovered by someone else later in underwriting, when there's less time to fix it cleanly.

Watch for This on Refinances, Not Just Purchases

This issue isn't limited to acquisitions. On a refinance, the original appraisal or survey on file may be years old, and the property itself may have changed — a partial sale, an added structure, a boundary line adjustment that was never formally recorded. If your existing loan file has an outdated acreage figure baked into it, ordering a current survey before your refinance appraisal is completed can prevent the same kind of last-minute reconciliation that trips up purchase transactions.

Keep the Numbers Talking to Each Other

A survey and an appraisal serve different purposes, but on a commercial transaction they need to agree on the basic facts of the property. Getting an accurate, current survey into the appraiser's hands early is a simple step that prevents a disagreement over acreage or square footage from turning into a delay nobody budgeted time for.

Have a commercial transaction where the survey and appraisal need to be coordinated? Contact South Texas Surveying with the property location, your lender's timeline, and whether an appraisal is already underway, so our team can help get accurate figures to everyone who needs them before it becomes a closing-week issue.