OS K.K.
Series

Series

Posts written across several parts. Each one stands on its own, but reading them in order shows how it went.

Rebuilding our website

A record of rebuilding a company site that had only a phone number as its way in, working alongside AI. More of it is about what we had to fix than about what went well.

7 parts

  1. What happens when a contracting firm has no contact form on its siteWe rebuilt the company website. Why did we decide to start again? There were three reasons, and none of them were about what suited us — they were all about what made things hard for our customers.
  2. What we handed to AI when building the site, and what we did notWe built this site in conversation with an AI. What we handed over, what we did not. And the part that mattered most was deleting the plausible-sounding falsehoods the AI wrote.
  3. How long should a company home page be? We cut 2,481 characters down to 1,587We had a finished home page, and then cut it down to two thirds. What there was too much of was not information — it was the same point repeated. Here are the numbers we measured.
  4. Five things we launched without finishing (as of August 2026)At launch there are parts of this site that are still not filled in. Here, without hiding any of it, is what is missing.
  5. Four things that were broken on a phone after launch, and how we fixed themAfter launch we opened the site on our own iPhone. The bottom of every page was hidden, and once you had scrolled down there was no way back to the menu. Here is how we turned "somehow it looks wrong" into numbers, and what we fixed.
  6. Move your company and Google will not update your address by itselfWe set up Google Search Console. In the process we found that our 2024 move to Katsushika was reflected nowhere online — and that even our own site had an address that did not match the company register.
  7. Why the layout looked half-finished on an iPad: nine breakpoint stepsThe phone was fixed. What about the iPad? Opening it, everything — type, spacing — was "medium", with no point of emphasis anywhere. Here is how we removed nine breakpoint steps, made headings bigger and the supporting text smaller, and stopped Japanese from breaking mid-word.

Start from the first

Choosing AI for a contracting firm

Before choosing which one, decide what you will not hand over. How we use three of them, and what happens to the information you put in. Only what we actually use at work.

3 parts

  1. When a contractor brings in AI, the first decision is what not to hand overWhen a restoration and interior works company starts using AI, the first thing to decide is not which AI to use. It is what to hand over and what not to. We draw the line by asking who loses if it gets something wrong.
  2. Using Claude, ChatGPT and Gemini for different jobs at a contracting firmHow the main AI tools feel in the day-to-day work of a contractor. We do not rank them: comparisons date quickly, and the draft of this article was written with AI, so we are in no position to rank them fairly.
  3. Is what you put into AI used for training? How personal and business plans differWhether the text you put into an AI is used for training is handled differently on personal plans and business plans. We checked what each company states officially, then set out the rules we settled on inside our own company and how to read the pricing.

Start from the first

Turning site preparation into an app

We are trying to turn the product-code lookup, ordering and lead-time checks that follow every order into an app. What is holding us up is not the technology but putting into words what the problem actually is.

1 parts・Still being written

  1. Material ordering only happens after hours: looking up codes, ordering, checking lead timesEvery time an order comes in, we look up product codes, place the order with the wholesaler, and check lead times. Three to eight jobs a week, twenty minutes each at the very least. None of it can be done while working on site, so it waits until we are back at the office — and it comes last in the order of desk work, finishing around nine. We are building an app for it, and what is holding us up is not the technology; it is putting into words what the actual problem is.

Start from the first

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Tell us about it first.

You do not need drawings or photos. Tell us the condition of the unit and when you need it done, and we can take it from there. Estimates and site visits are free.

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