Combine itemised hanok repair quotations, professional and ancillary costs, contingency, a locally confirmed grant formula, and a confirmed loan to estimate total project cost, owner burden, and construction-period cash needs.
Prepare actual quotes and the current local notice
This tool does not create a nationwide cost per area. Enter professionally confirmed quantities, written quotes on one VAT basis, and the eligible cost, rate, and cap confirmed by the competent Korean authority. The example only demonstrates the arithmetic.
1. Hanok and verification status
Jurisdiction, registration, area, and heritage status provide context and warnings; they never approve eligibility automatically.
Selecting a conservation zone does not apply any discretionary uplift automatically.
months
Used only to show average monthly cash preparation.
2. Itemised actual repair quotes
Align professionally confirmed quantities with contractor quote units. Leave unused lines at zero.
Roof, tiles, and bedding
Confirmed roof area and matching quoted unit cost
KRW 0
m²
KRW
Timber columns, beams, and purlins
Professionally identified repair locations and quote
KRW 0
locations
KRW
Walls and traditional plaster
Confirmed area and quote for removal, base, and plaster
KRW 0
m²
KRW
Traditional windows and doors
Window or door count and quote for the same specification
KRW 0
units
KRW
Floor, ondol, and timber decking
Area and quote aligned to removal and reinstatement scope
KRW 0
m²
KRW
Foundation, wall, and drainage
Quoted packages for confirmed foundation, wall, or drainage work
KRW 0
packages
KRW
Electrical, plumbing, and services
Service quote including the confirmed work and reinstatement scope
KRW 0
packages
KRW
Other repair work
Other actual repair quote without duplication
KRW 0
packages
KRW
3. Services, related costs, and contingency
Enter non-duplicated payable amounts on the same VAT basis as the repair quotes.
KRW
Written quote for hanok design and any design-review work.
KRW
Quoted supervision or professional site-management fee.
KRW
KRW
Confirmed weather protection, temporary works, move, or accommodation cost.
KRW
Waste, insurance, or other cost not duplicated elsewhere.
%
Applied to the full pre-contingency subtotal, from 0% to 30%.
4. Grant and financing cash plan
Even the Seoul presets do not approve eligibility. Record the eligible base and status confirmed from the current notice, ordinance, and decision letter.
Enter any confirmed conservation-zone uplift or separate incentive in custom mode.
KRW
Enter the amount recognised by the notice or review, not an automatic sum of repair lines.
%
KRW
Zero means no monetary cap in this arithmetic.
KRW
Enter only financing whose availability you have checked. Interest and repayments are not calculated.
The Korea Hanok Renovation Cost & Grant Calculator combines itemised repair quotations, professional fees, project expenses, contingency, a locally confirmed grant formula, and a confirmed loan plan. It is designed for early budgeting before a registered or proposed hanok renovation, not for deciding whether a building qualifies for support. Enter the roof, timber frame, walls, traditional windows, ondol floor, foundation and drainage, building services, and other repair work separately so that a missing or duplicated item is easier to find.
Hanok work varies too much for one national cost per square metre to be dependable. Access, traditional material specifications, hidden timber decay, dismantling and reinstatement, heritage review, temporary weather protection, and contractor availability can change the budget even when two buildings have a similar floor area. A zero entry therefore means that no usable quotation has been entered; it is not a national average supplied by this calculator.
Evidence to collect before entering costs
Property and programme status
Collect the building register, hanok registration or proposed-registration notice, conservation-zone or concentration-area confirmation, and cultural-heritage status.
Comparable itemised quotations
Ask each contractor to use matching quantities, specifications, dismantling scope, reinstatement scope, tax basis, exclusions, and quotation validity dates.
Professional and ancillary costs
Separate design, supervision, committee documents, surveys, permits, temporary protection, relocation, waste, insurance, and other project costs from direct repairs.
Current local support evidence
Keep the ordinance, annual notice, application form, review decision, recognised-cost schedule, grant cap, payment conditions, and recovery provisions together.
How the project cost is calculated
1. Direct repair cost
Each repair amount equals its confirmed quantity multiplied by its quoted unit cost. The eight line amounts are added to obtain direct repair cost. A genuine lump-sum package may use a quantity of one, but do not hide several overlapping proposals inside one line.
2. Professional and ancillary project cost
Design, supervision, and permit or survey expenses form professional service cost. Temporary protection or relocation and other documented project expenses form ancillary project cost. These amounts remain visible because a support programme may recognise some items but exclude others.
3. Contingency and total project cost
Subtotal before contingency equals direct repairs plus professional services plus ancillary project costs. Contingency equals that subtotal multiplied by the selected contingency rate. Total project cost equals subtotal before contingency plus contingency. The low and high scenarios move the chosen rate by five percentage points, subject to the calculator range, so they are sensitivity cases rather than forecasts.
National legal framework verified on July 30, 2026
The Act on Value Enhancement of Hanok and Other Architectural Assets supplies a framework, but it does not create one automatic nationwide cash rate for every hanok owner. Act Article 24 permits the State or a local government to provide necessary support for preserving and promoting hanok, while Act Article 25 provides for an application and review process. Enforcement Decree Article 17 leaves the detailed support targets, standards, procedures, and other necessary matters to local ordinance and permits grants or loans within the budget. This delegation is why the calculator starts with manual local-programme inputs and never applies the Seoul figures nationwide.
The Act definition also matters before budgeting. A building treated under cultural-heritage law may require a separate repair design, qualified heritage contractor, alteration approval, and support route rather than the ordinary hanok programme workflow. Selecting a heritage warning in the calculator changes the guidance only; it does not decide legal classification or eligibility.
National legal provisions relevant to Korean hanok repair support
Source
Planning meaning
What it does not prove
Act Article 24 and Article 25
Provides support authority and an application-and-review structure
A fixed nationwide rate, cap, or personal entitlement
Enforcement Decree Article 17
Confirms that local ordinances define detailed targets and procedures
That the same Seoul assumptions apply outside Seoul
Current local ordinance and notice
Supplies the project-specific rate, cap, eligible costs, timing, and evidence
Final payment before review, completion, and any required inspection
What the Seoul presets mean
Seoul Ordinance Article 21 is the source of the two narrowly labelled presets available in the calculator. For an eligible registered hanok receiving a full exterior renovation under the base rule, the displayed estimate is two-thirds of confirmed eligible cost, capped at KRW 60,000,000. For eligible partial repair under the displayed rule, the estimate is up to the confirmed eligible cost, capped at KRW 20,000,000. These are planning formulas, not a finding that the selected building, work, or cost is recognised.
Base Seoul hanok repair grant assumptions shown in the calculator
Displayed preset
Rate
Base cap
Required user confirmation
Full exterior renovation
two-thirds
KRW 60,000,000
Registration, project scope, recognised cost, review, and current rule
Partial repair
up to 100%
KRW 20,000,000
Registration, eligible partial-repair scope, recognised cost, review, and current rule
Grant, loan, and cash formulas
Estimated or approved grant
Confirmed eligible cost is first limited to total project cost. The rate-based amount equals that eligible cost multiplied by the selected rate. Estimated support is the smaller of the rate-based amount and the cap, except that a manual cap of zero means no cap. When status is approved, the applied grant is also limited by the entered approved amount and cannot exceed project cost.
Owner burden and liquidity
Net owner burden equals total project cost minus the applied grant. A confirmed loan is limited to that net burden, and cash required equals net owner burden minus the applied loan. The monthly figure merely divides cash required by the selected construction months; it is not a contractor draw schedule or a loan repayment calculation.
A loan is not a grant and does not reduce ultimate economic burden because the principal remains repayable. Seoul loan terms and bank underwriting should be confirmed separately; the calculator uses only the amount the user has already confirmed.
Step-by-step use
Record the jurisdiction, registration status, location type, cultural-heritage status, and proposed repair scope. Unknown answers should remain unknown instead of being changed merely to unlock a preset.
Enter the quantity and matching quoted unit cost for each repair item. Use zero for an unquoted item and request a revised written quotation before treating the total as a working budget.
Add design, supervision, permits or surveys, temporary protection or relocation, and other project expenses without duplicating amounts included in contractor prices.
Choose a contingency rate that reflects the current investigation stage, then compare the lower, base, and higher scenarios. Do not treat contingency as permission to omit known scope.
Select a current local programme and enter only recognised eligible cost, rate, and cap confirmed from official material. Use a Seoul preset only when the selected context and current local decision support it.
Change the support status from planning to applied or approved as evidence becomes available. In approved status, copy the grant amount from the decision notice and enter only a genuinely confirmed loan amount.
Worked planning example
Assume the itemised repair quotations total KRW 150,000,000, design and supervision total KRW 20,000,000, and ancillary project expenses total KRW 7,000,000. The subtotal before contingency is KRW 177,000,000. At a 10% contingency rate, contingency is KRW 17,700,000 and total project cost becomes KRW 194,700,000.
If KRW 120,000,000 is confirmed as eligible under the Seoul full exterior base formula, two-thirds is KRW 80,000,000 but the base cap limits the estimated grant to KRW 60,000,000. Net owner burden is therefore KRW 134,700,000. If a separate KRW 40,000,000 loan is genuinely confirmed, the construction-period cash requirement shown by the calculator is KRW 94,700,000. Over six months, the equal-share illustration is about KRW 15,783,333 per month, but an actual payment schedule may be front-loaded or milestone-based.
Worked hanok renovation budget example
Result
Amount
Interpretation
Total project cost
KRW 194,700,000
Repair, professional, ancillary, and contingency budget
Estimated grant
KRW 60,000,000
Base formula estimate subject to actual approval
Net owner burden
KRW 134,700,000
Ultimate cost after grant, before loan repayment effects
Confirmed loan
KRW 40,000,000
Financing that remains repayable
Cash required
KRW 94,700,000
Illustrative construction-period liquidity after grant and loan
Common planning mistakes
Applying the Seoul rate and cap to a property in another jurisdiction without checking that jurisdiction's current ordinance and notice.
Treating all project cost as recognised eligible cost even though the authority may exclude professional, ancillary, interior, or unrelated work.
Starting demolition or construction before the required application and support decision.
Adding a loan to the grant and describing both as a permanent reduction in owner burden.
Using the possible conservation-zone cap increase as an automatic entitlement.
Mixing VAT-inclusive and VAT-exclusive quotations or duplicating dismantling and reinstatement in several lines.
Assuming an annual minor-repair service is a cash grant paid to the owner.
Ignoring cultural-heritage procedures because the building is also commonly described as a hanok.
Frequently asked questions
Can I use this calculator outside Seoul?
Yes. Select the current local programme and enter the eligible cost, rate, and cap confirmed in the competent jurisdiction. The National Hanok Center policy list shows that regional programmes are governed by different ordinances, so do not copy the Seoul numbers.
Does a Seoul conservation-zone property automatically receive a higher cap?
No. The ordinance allows a possible increase in defined circumstances, but that is not an automatic maximum increase and it does not apply to the displayed partial-repair route. Enter a higher cap only after official confirmation for the project.
Should design and supervision be included in eligible cost?
Only if the current programme and the competent authority recognise them. Keep those costs in the project budget, but enter only the officially recognised portion in the eligible-cost field.
Why is an approved grant limited by the formula estimate?
The calculator prevents inconsistent inputs from producing support above the selected eligible cost, rate, cap, or total project cost. If the decision uses a different legal basis, switch to the manual programme and copy the confirmed terms.
Does subtracting a loan reduce my final cost?
No. It reduces the displayed construction-period cash need, but the principal remains repayable. Net owner burden is shown separately so that financing is not mistaken for support.
Can a designated or registered cultural-heritage hanok use this workflow?
The itemised budget can be a rough organising aid, but the ordinary support workflow may not be sufficient. Confirm heritage repair design, contractor qualification, alteration approval, and the applicable support programme with the competent authority.
Can I start work and apply later?
Do not assume so. The verified Seoul process requires application before work and generally requires work not to begin before the support decision. Confirm the exact sequence locally before paying a deposit, dismantling, or commencing work.
Official sources and update discipline
The legal and Seoul assumptions above were checked against current official materials on July 30, 2026. Recheck them when preparing an application because ordinances, annual budgets, notices, forms, recognised-cost schedules, and administrative interpretations can change independently.
Save the itemised quotation basis, confirm the competent authority and programme, separate eligible from non-eligible cost, and compare contingency scenarios before committing funds. Then replace every planning assumption with the current notice, written departmental guidance, review decision, contractor schedule, and financing documents for the actual project.