A few years ago I picked the cheapest of three quotes for a bathroom refresh at one of our properties. It looked like a clear win: the total was noticeably lower than the other two, and the scope seemed identical. Then the invoice arrived with two extra lines. One was for hauling away the old unit bath and the other was for “materials as required.” The cheap quote ended up costing more than the middle one.

I later noticed that both items had been marked 別途 (“separately”) in a single small line at the bottom of the original 見積書. I just didn’t know to look for it.

TL;DR

  • In a Japanese contractor quote, 別途 (betto) means “not included in this price.” The scope, who is responsible for it and the price all need to be confirmed separately.
  • Items I check for exclusions include waste disposal, permits and paperwork, consumables, and site costs like parking or protective covering.
  • The cheapest total isn’t necessarily the cheapest like-for-like scope. Before you compare totals, list every exclusion side by side.
  • 諸経費 (miscellaneous overhead) varies by contractor, by project and by what it’s calculated on. Ask which costs it includes.
  • Before you sign, ask each contractor one question in writing: “What is excluded from this quote?” (この見積に含まれていないものは何ですか？)

What Does 別途 Mean on a Japanese Quote?

別途 means the item is excluded from the quoted amount. Its scope, who is responsible for it and its price still have to be confirmed separately. Sometimes it comes with an estimate attached, but often it doesn’t. You’ll see it in a few forms:

  • 別途 or 別途見積 (estimated separately) next to a line item, with no amount
  • 別途工事 (separate works), for work that’s needed but treated as outside the contract
  • A note block at the bottom: 見積条件 or 備考 (quote conditions / remarks), listing what’s assumed and what’s left out

The remarks block is the one that caught me. Japanese quotes put a lot of meaning into those few lines of small print at the bottom, and they’re the part a non-native reader is most likely to skim.

Which Items Are Most Commonly Excluded?

These are the items I check for exclusions: disposal, permits, consumables, and site costs. Which costs apply depends on the work and the site conditions. Confirm and price every required item before you sign. Here’s what I now look for on every quote:

Item Typical Japanese wording Why it matters
Waste disposal 廃材処分費, 産廃処分費 Removing old fixtures, flooring or a unit bath isn’t free, and the cost scales with volume
Permits and paperwork 申請費, 申請手数料 Some work involves building management approval or other applications
Consumables 消耗品, 副資材 Sealant, screws, tape. Small items that sometimes come back as a “materials” line
Protective covering 養生費 Covering floors, walls and shared corridors, which matters a lot in a 分譲マンション
Transport and parking 運搬費, 駐車場代 In central Tokyo, paying for a work vehicle’s parking all day adds up
Work after hours or on weekends 夜間・休日作業 Confirm the permitted working days and hours with building management. If you ask for permitted night or holiday work, get any surcharge in advance

Not every quote leaves all of these out. The point is that two quotes can show very different totals for what is really the same job, depending on which of these lines one contractor included and the other marked 別途.

Why Is Like-for-Like Comparison So Hard in Japan?

Japanese contractors split the same job into very different levels of detail, so you can’t compare two quotes line by line until you’ve grouped them into common categories. One contractor writes a single line, “bathroom renovation, one set” (浴室改修工事 一式). Another writes fifteen lines covering demolition, plumbing, tiling, fixtures and finishing. A lump-sum price can be used, but check the specifications and cost breakdown behind it. A lump-sum (一式) line with no explanation isn’t enough to compare quotes.

Watch out for 一式 (“one set / lump sum”) in particular. A lump-sum (一式) line gives you no idea what’s inside it, so you can’t tell whether disposal is bundled in or quietly left out. If a quote is mostly 一式 lines, politely ask for a breakdown (内訳).

Then there’s 諸経費, the catch-all overhead line. It varies by contractor, by project and by what it’s calculated on, so ask which costs it includes. Published figures show why there’s no single standard: REPCO suggests roughly 8–15% of total construction cost, while CHORD discusses 20–35% for renovation overhead. In the quotes I’ve received, it has differed noticeably between contractors. Ask what the overhead covers and whether the price can be reviewed, for example 「諸経費の内容と、金額についてご相談できますか？」. We’ve written about 諸経費 in more detail before. The short version: it’s real overhead, but the percentage isn’t fixed.

How Do I Compare Quotes Fairly?

Normalize first, then compare. This is the routine we now use for anything bigger than a minor repair:

  1. Ask for the same scope in writing. Send every contractor the same short spec: photos, measurements, and what you want done. Vague requests get quotes that are vague in different ways.
  2. Read the remarks block first, not last. Write down every 別途 item from every quote.
  3. Group the line items into common categories: demolition, materials, labour, disposal, overhead, and so on. Then fill in what each quote charges in each category, including “excluded.”
  4. For each excluded item, either get a number or ask the contractor to include it. A quote with three 別途 lines and no amounts isn’t really a price yet.
  5. Compare the adjusted totals, not the headline numbers.

It’s tedious, and it’s exactly the kind of work that’s easy to skip when a turnover is due tomorrow. That’s part of why we built Aimitsu (aimitsu.benstay.jp). It extracts the line items from an estimate you upload and gives AI-generated price assessments. You can do the side-by-side comparison by hand with a spreadsheet, though. The habit matters more than the tool.

What Should I Ask Before Signing?

Ask, in writing, what is excluded and how much it would cost if needed. These are the questions I send now, by email or LINE, so there’s a record:

  • この見積に含まれていない費用はありますか？ (Are there any costs not included in this quote?)
  • 廃材の処分費は含まれていますか？ (Is waste disposal included?)
  • 別途となっている項目の概算を教えてください。 (Please give a rough estimate for the items marked 別途.)
  • 追加工事に着手する前に、工事内容・追加金額・工期への影響を書面で提示し、私の書面による承認を得てください。 (Before additional work starts, please provide its scope, price and schedule impact and obtain my written approval.)

The last one matters most for a short-term rental, because the work often happens while you’re not on site. Agreeing up front that nothing extra gets done without your written approval protects you from a surprise invoice, and it protects the contractor from a dispute. If the change alters the contract, document it through the applicable change-contract procedure (see MLIT’s January 2026 guidelines, section 2-2).

FAQ

Q: Is it rude to ask a Japanese contractor to break down a lump-sum (一式) line?

No. Asking for a breakdown (内訳) is a normal request, especially for larger jobs. Phrase it politely, for example 「内訳をいただけますか？」. How willing a contractor is to explain their quote tells you something useful about them.

Q: Should I always choose the quote with the fewest exclusions?

Not necessarily. A quote that includes everything can be padded, and a quote with honest exclusions can still come out cheaper once you’ve filled in the gaps. Compare adjusted totals, and look at how clearly each contractor explains their work.

Q: How much is 諸経費 normally?

Overhead varies by contractor, project and calculation base, so there’s no single normal figure. REPCO suggests roughly 8–15% of total construction cost, while CHORD discusses 20–35% for renovation overhead. Ask what it includes and whether the price can be reviewed, especially on larger jobs.

This post is for informational purposes only and does not constitute legal or tax advice. Please consult a qualified professional for your specific situation.