Case

[Business Setup] Factory Establishment Approval and Factory Registration — The Bottom Line: Check the Area Ratio Before Completion

September 15, 2026황윤상 행정사AI

I am an administrative agent with an office in Songdo, Yeonsu-gu, Incheon. Here is one episode I came across in my work.

Two dates were marked on the calendar.

One was the supplementation deadline set by the district office. Twelve days remained. The other was the document submission deadline in the facility loan agreement signed with the bank. Twenty-six days remained. Between those two dates, only one document was needed: a factory registration certificate.

The factory had already been fully built. It had received building use approval, and the presses were running. Yet on paper, that factory was still unregistered. The reason came down to a single number. It was not that the building was too small. It was that the land was too large.

Moving After Twelve Years

The owner was in his early forties. He ran a company that used sheet metal work and pressing to make brackets and reinforcements for auto parts. He had fourteen employees. For twelve years after founding the company, he had worked out of a leased building on the outskirts of Incheon. The building register listed its use as a manufacturing workshop, with a floor area just under 500 square meters.

That space hit its limit two years earlier. As a client increased its volumes, a bigger press became necessary. A large press can only go in where the floor load capacity and ceiling height are right. The leased building made that impossible.

The owner bought land in a planned management area. A little over 3,300 square meters. The site was a mix of farmland and miscellaneous land. Part of the purchase money came from a policy-fund facility loan, and the rest was raised by putting up the family home as collateral. The construction cost was financed with a separate loan. The whole repayment plan only worked if the new factory was registered and running on time.

An architectural design firm handled the permits. Because the factory's building area exceeded 500 square meters, it obtained factory establishment approval. With that single approval, the development activity permit, farmland conversion, and building permit were all processed together. The business plan included two buildings: a Phase 1 factory building of 780 square meters and a Phase 2 warehouse building of 420 square meters.

But after construction began, the cost of steel frames and labor rose. The owner postponed the warehouse. He would build only the factory building first and put up the warehouse once volumes stabilized. At the time, that looked like a sensible decision. No one told him that the decision would become a problem at the registration stage.

A Completion Report Filed on His Own

The factory building received building use approval in the spring. That was where the design firm's contract ended. Once the machinery was installed, the owner prepared the factory establishment completion report himself. The form was on the district office website, and the required attachments did not seem numerous.

The report went in on time, five weeks after the date on which building use approval and machinery installation were completed. Up to this point, there was no problem.

A week later, the district office's business affairs division called. It was a supplementation request. The factory building area fell short of the standard factory area. The supplementation period was fifteen days from the date of notice. Attached was a note explaining that if the requirements were not met within that period, the report would be returned, and he would have to file again after meeting the requirements.

At first, the owner understood this as something like a missing document. He called the design firm. The firm replied that building the warehouse would solve it. The warehouse design was finished, so all he had to do was break ground. The problem was that it would take at least several months from groundbreaking to building use approval, and he did not have the money for that construction.

The owner tried once more on his own. He called the officer at the district office and asked whether filing just a construction commencement notice for the warehouse would be accepted as supplementation. The answer was clear. The completion report is assessed on the basis of buildings that have actually been built. Construction plans do not count toward the area. The officer answered according to the rules, and the answer was not wrong. But what could be done after that answer was not something one phone call could reveal.

When the owner explained the situation to his bank's loan officer, the officer pointed to one line in a special clause of the agreement: submit a document confirming factory registration by a set date after the loan is disbursed. The owner said it was that loan officer who suggested he look into the administrative side first and referred him to our office.

One Line in the Supplementation Request

When we scheduled a consultation over the phone, I asked him to send the supplementation request, the factory establishment approval, and the business plan submitted at the time of approval in advance. The owner emailed the scans that evening. Two days later, in the morning, he came to the office at the booked time. By then, I had already run the numbers once.

The heart of the supplementation request was one line: below the standard factory area ratio.

When a factory is built, the factory buildings must be at least a certain proportion of the site area. This proportion, set by industry, is the standard factory area ratio. It is a mechanism to prevent factory land from being secured far beyond what is needed and then left idle. At the approval stage, the ratio is checked against the building area in the business plan. At the completion report stage, it is checked again against the building area actually built.

At approval, the business plan called for two buildings totaling 1,200 square meters. The ratio was met with room to spare. At the completion report, what had been built was one building of 780 square meters. The site area remained 3,300 square meters. Working backward, the building area would need to be a little over 140 square meters larger to meet the standard.

The owner asked: so registration is impossible until the warehouse is built?

It was not. A ratio is a fraction. If you cannot increase the numerator, it is time to look at the denominator.

Three Paths Laid Out at the Start

At the first consultation, I wrote the options down as three.

First, the path of starting construction on the warehouse. It is the most certain, but also the slowest. There was no money for construction at the moment, either. It would miss not only the twelve-day supplementation deadline but also the loan document deadline. It was effectively ruled out.

Second, the path of checking whether any existing facilities could additionally be counted toward the factory building area. In the factory yard there was a canopy-covered material storage area and a small compressor room. Whether such facilities count depends on their structure and use and on the scope of inclusion under the relevant public notice. I sent the drawings to the district office officer and asked for confirmation. The answer came two days later. The compressor room was already included, and the officer's view was that the canopy storage area, as structured in this case, would be difficult to recognize. It was nowhere near enough to cover the shortfall.

Third, the path of reducing the factory site area. This meant amending the site area in the factory establishment approval to carve out the planned warehouse site, which was not in use for now, from the factory site. A smaller denominator would allow the ratio to be met with the existing building alone.

The third path was the realistic one. But it rested on one premise. If the land to be carved out had already been worked as factory land, things would get complicated. Removing land whose form and quality had already been changed from the scope of the permit would raise a new problem: how to account for the condition of that land.

So I asked what condition the warehouse site was in now.

The Land No One Had Touched

The owner thought for a moment and answered that since the work had all been done at once, it was probably all graded. From his point of view, site preparation had been a single job. While the excavators came in to level the ground and build retaining walls, he had not paid particular attention to where Phase 1 ended.

It needed checking. I asked the civil engineering contractor for the construction schedule, as-built drawings, and site photos taken during construction. The materials arrived three days later.

When the drawings were overlaid, a shape emerged. The site preparation work had been carried out only over the area covering the factory building, the access road, the parking lot, and the stormwater pipes. Apart from a temporary drainage ditch dug along its boundary, the planned warehouse site was still in its original terrain. To cut costs, the contractor had pushed the grading of the warehouse portion to Phase 2. The owner had heard this at a construction meeting but remembered it only as a conversation about costs.

The photos backed this up. Traces of the original field and weeds remained on the warehouse site. The construction schedule also listed the grading of the warehouse site separately as a Phase 2 item.

This fact opened up the third path. If the land to be carved out was still in its state before any change in form and quality, the explanation for excluding it from the factory site became simple. That land had never been used as factory land, and when the warehouse was built in the future, the approval procedure could simply be followed again.

In administrative paperwork, the strongest evidence is usually a document that already exists. The difference lies in who rereads it, and with what question.

Factory Establishment Approval and Factory Registration, Step by Step

Let us pause here to go over the framework of the system. Most of the tangles in this case arose at the seams between procedures.

Article 13 of the Industrial Cluster Development and Factory Establishment Act provides that anyone who intends to newly build or expand a factory with a building area of 500 square meters or more, or to change its type of business, must obtain approval from the mayor, county head, or district head. It is an approval obtained before construction begins. When this approval is granted, following consultation with the relevant departments, various permits such as a development activity permit or farmland conversion are deemed to have been processed together. This is commonly referred to as deemed approval.

When the factory is finished, a completion report is filed under Article 15 of the same Act. The deadline is set by the Enforcement Decree: within two months after completing building use approval and the installation of machinery and equipment. Once the completion report is accepted, the authority enters the factory in the factory registry. Only then is a factory registration certificate issued.

In summary, the flow is as follows: factory establishment approval, construction commencement, building use approval, machinery installation, completion report, factory registration. Most small manufacturers leave the first two steps to a design firm and the middle to a construction contractor. Then they handle the last two steps themselves and get stuck. The business plan from the earlier stage and the actual result at the later stage are out of step, and the first person to see that gap is the owner himself.

The location must be examined as well. Even in a zoning district where factories can be built, such as a planned management area, the location may be restricted depending on the type of business or the kind of emission facilities. In this case, the type of business posed no problem in the location review, but checking the zoning district, industry restrictions, and access road requirements before buying the land is the first step in establishing a factory. If you find out after buying the land, your options shrink sharply.

A factory under 500 square meters is not subject to approval, but it can be registered upon application. Many places require a factory registration certificate, such as public procurement direct production verification and policy fund screening, so it is better for small businesses to take care of registration in advance as well. Requirements and procedures vary by region, industry, and location, so each case needs to be confirmed with the competent department.

Where to Draw the Dividing Line

Once we settled on the third path, the first task was to decide where the dividing line would go. To carve land out of the factory site, the parcel must be subdivided, and subdividing a parcel requires a survey. Surveys are requested from the Korea Land and Geospatial Informatix Corporation (LX). The question was where to draw the line.

Three conditions overlapped.

One: the remaining factory site area had to meet the standard factory area ratio. Dividing 780 square meters by the standard area ratio gives the upper limit for the factory site. The calculation showed the limit to be a little over 2,700 square meters. The area to be carved out was around 600 square meters.

Two: the carved-out land must not become landlocked. The planned warehouse site was on the inner side of the property. Draw the line wrong, and that land would have no road access. Years later, when he tried to build the warehouse, he would be blocked again by an access road problem. The line had to be shaped so that the carved-out land adjoined the existing access road.

Three: the stormwater pipes and retaining walls already in place had to remain entirely within the factory site. If the pipes crossed the dividing line, the factory site's drainage facilities would effectively run through a different parcel. Sooner or later, that would cause problems for one side or the other.

I drew lines on the design firm's drawings with all three conditions overlaid. The first draft failed the landlocked condition. In the second draft, one section of the stormwater pipe crossed the line. The third draft satisfied all three conditions. After the carve-out, the factory site came to just under 2,700 square meters. The margin after meeting the standard area ratio was a little over 20 square meters. Not generous, but enough.

Before requesting the survey, I sent this draft to the design firm and the civil engineering contractor to confirm there were no problems on the drawings. Once a survey is done, it is hard to undo. The right order was to fix the line first and then call in the surveyors.

The Order of Four Agencies

Next came the sequence. Several departments were involved in this amendment: the business affairs division in charge of factory establishment approval, the urban planning division overseeing the deemed development activity permit, the cadastral division handling subdivision, and LX, responsible for the survey.

Depending on which came first, the timeline could double. If subdivision came first, the parcels would change before the amendment approval was issued, leaving the lot numbers on the approval out of sync with the actual lot numbers. If the amendment approval came first, the site area would be changed based on drawings alone, and it was uncertain whether the department would confirm the area without finalized survey results.

So before settling the order, I requested a preliminary consultation with the business affairs division. I brought the proposed dividing line, the civil drawings, and photos showing that the warehouse site had not been worked. The sequence confirmed for this case at the consultation was as follows. First, obtain the survey result map through a subdivision survey. Attach that map and apply for amendment of the factory establishment approval. During the amendment approval process, the urban planning division consults on the amendment of the development activity permit at the same time. Once the amendment approval is granted, apply for subdivision. Once subdivision is complete, submit the supplementary documents for the completion report.

At the consultation, the officer also raised a question first. If the site shrank, would the landscaping area and parking spaces attached as conditions of the original approval still be secured within the factory site? It was a question we had anticipated. I had pulled the locations of the landscaping and parking sections from the building use approval drawings in advance and brought a single sheet showing that all of them fell inside the new dividing line. Had any part of the approval conditions been located on the land to be carved out, the dividing line would have had to be redrawn.

Following this sequence, the longest stretches were the wait for the survey and the processing time for the amendment approval. There was no way it would be finished within the twelve-day supplementation deadline.

How to Handle Two Deadlines

I started with the supplementation deadline. If the requirements could not be completed within the deadline, the thing to do was whatever could be done within it.

On the day I received the survey application receipt, I submitted a written request to the business affairs division for an extension of the supplementation period. The request set out three things: that a change in the factory site area was underway to resolve the grounds for the supplementation request; the procedural sequence confirmed at the preliminary consultation and the expected time for each step; and a copy of the survey application receipt. A vague request for more time and a request showing that the procedure is already moving are received in different ways.

The extension was granted. The officer asked to be informed once the amendment approval application was filed. The new deadline was nearly a month later than the original.

The deadline in the loan agreement was different in nature. It was not an administrative procedure but a financial contract. Negotiating the terms of the contract was a matter between the owner and the bank. But the materials the bank would use to make its judgment could be prepared from the administrative side.

I put together a one-page progress statement for the owner to submit to the bank. That the factory had already completed building use approval and machinery installation and was in operation. That the completion report had been filed within the statutory deadline. That the grounds for supplementation could be resolved by adjusting the site area, and the procedural sequence had been agreed with the competent department. The expected schedule for each step and the anticipated date of factory registration. As attachments, I included the completion report filing record, the document approving the extension of the supplementation period, and the survey receipt.

The owner took this document to the bank, and the bank adjusted the submission deadline once. The adjusted date was ten days after the last day of the schedule we had set. It was too narrow to call a cushion, but it was within reach as long as the schedule held.

Pallets on Survey Day

On the morning of the survey, there was a small commotion.

When the LX survey team arrived on site to mark boundary points along the dividing line, more than ten pallets loaded with steel sheet stock were stacked right on the spot. The factory foreman had been using the planned warehouse site as a temporary material storage area. With no warehouse, piling the stock on the nearest empty patch of land was the obvious choice for him.

While the surveyor waited with his instrument set up, the foreman came out driving a forklift. Each time he moved a row of pallets, the surveyor waved him on: a bit more, just a bit more. Once the pallets were all cleared, the foreman climbed down from the forklift and asked whether this meant the land would no longer be part of the factory. When the owner answered that, for now, yes, the foreman asked back where he was supposed to put the stock, then. By lunchtime that day, a new spot for material racks had appeared along an interior wall of the factory.

It was something to laugh off, but I did point out one thing. If factory materials kept being stacked on land that was to be excluded from the factory site, the paperwork and the site would once again be out of step. The department might inspect the site before or after the amendment approval. Within that week, the owner moved all storage locations inside the factory site.

What the Urban Planning Division Would Ask

When the survey result map came out, I applied for the amendment of the factory establishment approval. Before writing the application, I prepared one more thing: anticipating the questions the urban planning division would ask while consulting on the amendment of the development activity permit.

The department overseeing development activity permits usually focuses on a set list of concerns. What will happen to the carved-out land from now on? Will the previously permitted infrastructure, especially drainage, still function properly after the amendment? Is there any room for the carved-out land to be neglected or for its form and quality to be changed without permission?

So I added three paragraphs to the amended business plan. First, that the excluded land remained in its state prior to any change in form and quality, which could be confirmed by the construction photos and schedule. Second, that the stormwater pipes and retaining walls were all within the amended factory site, and rainwater from the excluded land would flow according to the original terrain without mixing into the factory site's drainage system. I attached a drainage system diagram verified by the civil engineering contractor. Third, a plan to go through a separate factory expansion approval procedure when building the warehouse on the excluded land.

The anticipation was about half right. The urban planning division's consultation opinion contained two points: tidy up the temporary drainage ditch on the excluded land, and obtain a separate permit when developing the excluded land in the future. Both were already answered in the business plan. The consultation concluded without any further supplementation request.

If you put the answers in the documents before the questions come, you save a round trip. In administrative procedures, one round trip is usually a week.

One Line in the Equipment List

Just before filing the amendment approval application, I found one more discrepancy: the machinery and equipment list in the business plan from the time of approval.

The list showed two large presses. Only one had actually arrived at the factory. The other was scheduled to come in several months later because the overseas manufacturer's delivery had been delayed. Instead, a mid-sized press brake that was not on the list had arrived first.

The owner said that when he first wrote the completion report, he had copied this section straight from the approved list. The business affairs division's first supplementation request only pointed to the area ratio, but once the area problem was solved, the equipment list could well become a second ground for supplementation. If the refiling stalled again, it would blow past the date negotiated with the bank.

So I included a cleanup of the equipment list in the amendment approval application. I listed currently installed equipment separately from equipment scheduled to arrive later, and added the press brake. For the press yet to arrive, we arranged to go through a separate amendment procedure once it came in. The goal was to close every known discrepancy with a single application.

Reading the rules is not hard. What is hard is reading in advance which rule will become the second problem.

The Day the Factory Registration Certificate Came Out

The amendment approval came out a little over three weeks after the application. The factory site area on the approval had been reduced. I immediately applied to the cadastral division for subdivision, and a week later new lot numbers were assigned.

The supplementary documents for the completion report were submitted with eight days left on the extended deadline: the amendment approval, the land documents after subdivision, the updated equipment list, and the status of the factory buildings. This time, no supplementation request came. The report was accepted, and the factory was entered in the factory registry.

On the day the factory registration certificate was issued, the owner sent a photo of it to the bank's loan officer on the spot. He submitted the original to the bank the next morning, six days ahead of the adjusted deadline.

That same week, there was also a supplier audit by his client. Before formally registering items produced at a new factory, the client had a procedure to confirm that the production site was a registered factory. The owner handed the auditor a copy of the factory registration certificate. The volume contract for the new items followed that audit. A single registration certificate opened two doors at once: the loan and the business deal.

A few tasks remained. The parcel used as the factory site had to have its land category changed to factory land. A land category change must be applied for within a set period from the date the grounds arise, so I noted that schedule on the owner's calendar.

Next Plans for the Land Left Aside

The 600 square meters that were carved out still belong to the owner. They are simply no longer part of the factory site. When he has the means to build the warehouse, he can obtain a new factory expansion approval at that time. Drawing the dividing line so that the land touched the access road was preparation for that day.

Looking back, the root of this case was simple. The business plan was drawn up for two buildings, and only one was built. Scaling back plans during construction is common. What is rare is working out, before construction starts, how that change will affect the numbers at the registration stage. Had the site area and area ratio been calculated once at the moment he decided to postpone the warehouse, the amendment approval could have been obtained in advance during construction. The completion report would then have gone through in one go.

That does not mean the owner's judgment was wrong. Splitting construction into phases when costs rise is a business decision. Administration is the work of transcribing that decision into documents correctly. Gaps appear when the two do not move at the same speed.

About three months later, a brief update came from the owner. The second press had arrived and its amendment procedure was complete, and volume for the client's new items had started. The fourteen employees had become sixteen. The repayment schedule for the loan secured against his home was also back on its original track.

The factory had been there from the start. It took the paperwork two months to catch up with it.

What to Check Before Building a Factory

If you are about to build a new factory or expand an existing one, please check the following first.

① A building area of 500 square meters is the threshold. At or above it, factory establishment approval is required before construction begins; below it, you can still obtain factory registration by applying. Check in advance whether procurement, policy funds, and the like require a factory registration certificate.

② If you scale back your business plan, recalculate the area ratio first. Postponing part of the buildings may trip the standard factory area ratio at the completion report. It is faster to obtain amendment approval for the site area or building plan during construction.

③ The completion report deadline is two months. It is counted from the date building use approval and machinery installation are completed. To avoid repeated supplementation, the report must fully reflect any equipment and area that differ from the approval.

④ If you subdivide the site, look at landlocking and drainage first. Whether the carved-out land touches a road, and whether the existing drainage facilities remain entirely within the factory site, will determine the next permits.

⑤ Work backward from both the document deadline in your financing agreement and the administrative schedule. You need documents showing the progress of the administrative procedure in order to negotiate schedule adjustments with a financial institution.

The requirements for factory establishment approval and registration differ by location, industry, and region, and may vary depending on the judgment of the competent department. Because requirements differ from case to case, each needs to be checked individually.

This article is a reconstruction based on actual consultation cases; the people, business names, place names, and figures that appear in it are unrelated to any specific individual or incident.

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