Reconcile a Korean cadastral resurvey adjustment notice
A cadastral resurvey can change the registered area of land when its boundary is finalized.
Even when a fence or access road has remained in the same place for years, the confirmed area may differ from the previous land register.
An owner may consequently receive an adjustment payment demand or a receipt notice.
Preparing only for a small surveying fee can leave an unexpected cash gap when the adjustment is due.
This calculator compares previous and confirmed parcel areas using the unit prices checked in the notice.
It separates increasing and decreasing parcel amounts, calculates the net for one owner and settlement, and reconciles that net against the actual notice.
It also groups an approved payment schedule by month.
The result is a review sheet for the cadastral authority, not a new appraisal or an official assessment.
Korea-specific rules for 2026, checked on 2026-09-19.
Use the valuation basis and dates applicable to your actual notice.
The tool does not forecast land appreciation or derive an adjustment from nearby asking prices.
What the comparison shows
Parcel changes and owner net
For each parcel, subtract its previous area from its confirmed area and multiply by the checked unit price.
Increases and decreases are displayed separately before netting one settlement for one owner.
Incomplete parcels remain unresolved: completed-parcel subtotals are available, but the complete calculated net is withheld.
Notice difference and monthly cash
The reconciliation difference is the calculated net minus the signed notice net.
The budget uses the actual notice entered by the user, even if the calculated amount differs.
Approved installment dates and amounts are grouped by month, showing the largest monthly payment and the total shortfall against available cash.
The boundary survey cost calculator concerns fees for commissioning work such as boundary restoration or subdivision surveying.
This page concerns area-change settlement after cadastral resurvey boundaries are finalized.
Do not count the same amount twice by treating both outputs as the same expense.
Keep any separately commissioned survey in its own budget category.
Information to collect before entering figures
- Owner and settlement scope: combine private parcels for one owner in the same settlement only.
Family ownership does not make different owners one person.
Joint ownership, transfers, inheritance, seizure and deposits require authority confirmation before allocating an amount.
- Previous and confirmed areas: copy square metres from the notice or adjustment statement.
Do not enter pyeong or an area estimated from a map screenshot.
The previous area must be positive; the confirmed area may be zero.
The input accepts up to four decimal places and 1,000,000 m² per parcel.
- Notified unit price: use KRW per square metre, not the value of the entire parcel.
The supported maximum is KRW 10,000,000/m², with whole-won prices.
Select the official-land-price option only after confirming the committee-approved valuation basis for this settlement.
- Owner-level notice and date: choose payment or receipt and enter a positive amount.
Use zero settlement with amount zero for a notice with no balance.
Copy the final payment due date or a confirmed receipt date from the notice or authority advice.
An unknown date does not generate a monthly schedule.
Short parcel labels are sufficient; resident-registration and bank account numbers are unnecessary.
The calculation runs in the browser using the entered information.
The form supports up to 20 parcels.
A cleared field remains unknown instead of silently becoming zero, and unsupported input ranges require a separate review.
Appraisal prices and officially announced land prices
Article 20 of the Special Act on Cadastral Resurvey generally bases the adjustment on the arithmetic average of valuations from two appraisal entities as of boundary finalization.
Using an individually announced official land price is an exception requiring a landowners council request and committee review.
A current public land-price search result is therefore not automatically the unit price used in your adjustment notice.
Check the source of each price
Identify the valuation method and reference date on the notice first.
If supporting appraisal documents contain different values, ask the cadastral authority for the unit price actually applied to the adjustment.
Do not simply choose one appraisal figure.
If the displayed unit price is rounded, ask how it relates to the original valuation amount.
This calculator does not select appraisers or assess appraisal quality.
Decree Article 12 calculates the approved official-land-price method using each changed area and the relevant land price at boundary finalization.
Substituting another year or a market asking price changes the basis of comparison.
Article 20(2) excludes collection and payment for qualifying state or local administrative property; such property should not be included as ordinary private land.
Formulas and signed results
Area change = confirmed area − previous area
Parcel amount = area change × checked unit price
Calculated owner net = total increases − total decreases
Notice difference = calculated net − signed notice net
Positive amounts mean payment; negative amounts mean receipt.
A positive difference is a reconciliation signal, not an instruction to pay that extra amount.
Check which input or assessment assumption differs from the notice.
Article 20(1) requires netting parcel adjustments where one landowner owns multiple parcels.
Looking only at the increasing parcels can overstate the net payment, while treating decreasing parcels as separate spendable income can also mislead.
This does not authorize combining unrelated settlements or different owners.
Confirm the correct settlement scope before selecting the confirmed option.
The calculator processes area inputs as integer ten-thousandths of a square metre and rounds each parcel amount to the nearest won.
That is a budgeting convention, not an asserted statutory rounding rule.
A notice may use more precise valuation figures or different rounding, so small differences require checking.
A zero difference does not confirm ownership rights, assessment validity or legal finality.
Worked fictional example
Parcel A: increase
Previous 100 m² → confirmed 112 m²
Increase 12 m² × KRW 1,000,000/m²
Payment direction: KRW 12,000,000
Parcel B: decrease
Previous 100 m² → confirmed 96 m²
Decrease 4 m² × KRW 500,000/m²
Receipt direction: KRW 2,000,000
For one owner and settlement, KRW 12,000,000 minus KRW 2,000,000 gives a calculated payment of KRW 10,000,000.
If the actual notice says KRW 9,900,000, the displayed difference is KRW 100,000, and the budget still uses the entered notice.
Do not change accurate area or price inputs merely to force a zero difference.
Check missing parcels and valuation precision first.
Assume a KRW 10,000,000 notice is approved for four payments of KRW 2,500,000 on 2026-10-15, 2026-12-15, 2027-02-15 and 2027-04-15.
Each listed month requires KRW 2,500,000, which is also the peak monthly payment.
With KRW 3,000,000 already available, the total shortfall is KRW 7,000,000.
These are fictional prices and approval terms, not typical market values or an approval promise.
Future income or borrowing is not automatically included.
Installment bands under Appendix 1
Decree Article 13 and Appendix 1 set the following amount bands and maximum periods and counts.
Falling in a band does not grant an installment plan.
Apply to the cadastral authority with the required reasons and supporting evidence, then check the written approval.
Korean cadastral resurvey Decree Appendix 1 installment limits| Notified payment band (KRW) | Maximum period | Maximum count |
|---|
| 5,000,000 to below 10,000,000 | 6 months | 3 |
| 10,000,000 to below 30,000,000 | 1 year | 4 |
| 30,000,000 to below 50,000,000 | 1 year | 5 |
| 50,000,000 or more | 1 year | 6 |
Exactly KRW 5,000,000 starts the first band and exactly KRW 10,000,000 starts the second.
KRW 30,000,000 and KRW 50,000,000 start the next respective bands.
Amounts below KRW 5,000,000 are not covered by these bands; the calculator does not invent an approved schedule for them.
Under Decree Article 13, the authority is to notify the installment decision in writing within 15 days of receiving the application.
Enforcement Rule Article 11 refers to application Form 7.
How to use the notice review
- Confirm one settlement.
Check the owner, project scope and rights before combining parcels.
Ask the authority first when there are joint ownership or succession issues.
- Enter all relevant parcels.
Copy previous and confirmed areas and notified unit prices, then confirm the valuation basis.
Compare the input row count with the adjustment statement to catch omissions.
- Enter the owner-level notice and actual date.
Distinguish payment from receipt.
Leave an unconfirmed due or receipt date blank rather than guessing.
A stated payment period on a receipt notice is not necessarily an actual bank-transfer date.
- Transcribe approved installments.
Enter the installment-period start checked in the approval, the final due date, and every payment date and amount.
The monthly table is withheld if the total, count, period or sequence fails validation.
- Save or print the review.
Review the difference and unresolved messages before contacting the authority.
A downloaded TXT retains the fact that a fictional example was loaded, even after editing, so check the provenance of every figure.
Interpreting the cash budget
Preparing for payment
Total shortfall is the notified payment less currently available cash, with a minimum of zero.
Peak monthly payment shows the greatest payment demand in any listed month.
Future wages and rent income are not modeled, so the shortfall is not automatically a borrowing requirement.
Enter cash that remains available after living expenses and other commitments.
Expecting a receipt
Act Article 21 addresses the payment period following a receipt notice and circumstances involving deposit with a court deposit office.
A notice alone does not guarantee money on a preferred date.
Without a confirmed receipt date, no monthly receipt schedule is shown.
Check seizures, deposits and succession separately, and do not offset a different owner or unrelated settlement automatically.
Article 21(5) generally requires payment within six months of imposition, while Article 21(4) provides payment to an owner within six months of the receipt notice.
The two periods have different starting events.
Approved installments operate within the Act and Decree limits.
The calculator does not resolve service, holidays or amended decisions to generate a legal deadline.
Confirm the period start and final date in the approval with the authority.
Installments must total the actual notice, use distinct dates in increasing order, stay within the entered period, and respect the applicable count and period limits.
Payments in the same calendar month are added together.
Date checks use calendar months, including month-end adjustment; this is a consistency check of entered approval terms, not a legal finding about when the period begins.
A receipt notice cannot be converted into a payment installment plan.
Frequently asked questions
Does an area increase always mean I pay?
An increase is a payment-direction amount in the ordinary private-land reconciliation.
Check decreases for the same owner and settlement as well as the actual notice.
Administrative property and succession are outside the automatic scope.
Can I use the current official land price?
Only after checking that it is the valuation basis applicable to the notice.
Appraisal is the general method; the official-price exception requires the council request and committee process.
An unconfirmed basis leaves reconciliation pending.
Does a difference prove the notice is wrong?
No.
Check units, omitted parcels, displayed price precision, rounding and owner-level settlement scope.
The difference helps frame an inquiry; it does not establish an error or a right to a reduction.
Can a KRW 10 million notice automatically be split into four monthly payments?
No.
The KRW 10 million to below KRW 30 million band allows up to four installments within one year.
Actual dates and amounts follow approval, and equal monthly installments are not assumed.
Why is the installment table withheld?
Check the notice, approval confirmation, start and final dates, amounts and sequence.
Duplicate dates and excess installment counts also block the table.
Resolve the displayed issues and compare the result with the approval again.
Can I combine jointly owned family land?
The tool does not allocate ownership shares or determine whom the authority assesses.
Do not combine family notices or multiply areas by assumed ownership shares before obtaining confirmation of the applicable settlement.
Are taxes and late-payment costs included?
Only entered adjustment principal and its schedule are modeled.
Taxes, interest, late charges, separate surveying fees and appraisal dispute costs are excluded.
Confirm whether each item applies and obtain its amount separately.
What is the saved review for?
Use it to compare notices and approvals or prepare questions for the cadastral authority.
It preserves unresolved conditions and fictional-example provenance.
It is not an official payment demand or an objection form.
Prepare a focused inquiry for the cadastral authority
Gather the adjustment statement, payment demand or receipt notice, and installment approval.
Compare areas and prices first, then identify which parcel or assumption may explain a remaining difference.
Update your cash plan only after checking actual dates and terms.
Avoid treating an expected receipt as immediately spendable cash.
Review separate boundary survey fees