New:

AI drafting for addenda and ASIs

AI Drafting for Addenda, ASIs, and Bulletins

An addendum during bidding or an ASI during construction is a small design change wrapped in a lot of drafting: the edit itself, a cloud and delta on every sheet it touches, a new row in each revision schedule, and a narrative that tells bidders or the contractor exactly what changed. Nomic drafts the sheet revisions in your DWGs, updates the title blocks, and writes the narrative of changes so your team reviews one package instead of assembling it.

Start for freeAll drafting work
Last reviewed: November 2026

You send

  • A sentence, sketch, or marked-up PDF describing the change
  • The current bid or construction set as DWG files
  • The specifications, if spec sections change too
  • Your revision numbering and clouding standard

Nomic hands back

  • Revised DWGs with clouds and deltas for this issue
  • Updated revision schedules on every reissued title block
  • A narrative of changes by sheet and specification section
  • Plotted PDFs of the reissued sheets, ready to attach
1234567ABCCLASSROOM201CLASSROOM202CLASSROOM203MEDIA CENTER204CLASSROOM205CLASSROOM206CLASSROOM207CLASSROOM208CLASSROOM209CLASSROOM210CLASSROOM211MEDIA CENTER212STAIRS2MOVE DOOR 2'-0" EASTADD 2 RECEPTS, VIFOK?27'-3"27'-0"27'-3"27'-3"27'-0"27'-3"94'-8"1AFLOOR PLAN REVIEWSCALE: 1/8" = 1'-0"N1234CONSULTING ENGINEERSREVISIONS1ISSUED FOR REVIEWPROJECTMAPLE RIDGE SCHOOLSCALE1/8" = 1'-0"DATE05/15/2026KEY PLANSHEET TITLEFLOOR PLAN REVIEWSHEET NUMBERA-101

On the sheet

Floor Plan Review, annotated

A review set with redline markups: clouded changes, notes, strike-outs, and questions back to the designer.

  1. 1Clouded area with a requested change
  2. 2Markup note from the reviewer
  3. 3Item struck out for removal
  4. 4Field verification request

The problem

A one-line change touches five sheets

Moving a rooftop unit 10 feet touches the roof framing plan, the mechanical roof plan, the electrical roof plan, the plumbing roof plan for the condensate drain, and the structural schedule for the new curb. Each of those sheets needs a cloud, a delta in the right revision number, and a revision schedule row with the addendum number and date, and the addendum narrative has to list every reissued sheet so bidders replace the right pages.

Addenda run on a bid date and ASIs run on a contractor who is waiting to build, so the package is usually assembled late. That is when a delta goes on the wrong revision, an old cloud from Addendum 1 is left on the sheet and confuses the bidders, or the narrative lists E-104 as reissued when the change was on E-105. Any of those turns into an RFI, or a bid question nobody can answer before the bid closes.

01 / Revise

The change drafted on every sheet it touches

Describe the change in a sentence or attach the architect's or engineer's sketch. Nomic finds every sheet the change touches across disciplines, drafts the revision in your DWGs, and clouds it with the delta for this addendum, ASI, or bulletin, clearing the clouds from earlier issues if that is how your firm reissues.

  • Coordinated edits across architectural, structural, and MEP sheets
  • Clouds and deltas numbered to the current issue
  • Prior issue clouds kept or cleared per your firm standard
02 / Document

Title blocks and the narrative written from the edits

Nomic adds the issue row to the revision schedule on every reissued title block and writes the narrative of changes from the edits it made, sheet by sheet and spec section by spec section. Because the narrative comes from the drawings, the list of reissued sheets matches the sheets that actually changed.

  • Revision schedule rows with issue number, description, and date
  • Narrative of changes by sheet and by specification section
  • Sheet index updated to show reissued sheets
03 / Check

The package checked before it goes to bidders

Nomic checks the package against itself before it leaves: every cloud has a delta, every delta has a revision schedule row, every reissued sheet is in the narrative, and the change still meets the code and the specs. Anything that looks like a change in scope or cost is flagged, so your team can decide whether an ASI should become a proposal request.

  • Clouds, deltas, revision schedules, and narrative cross-checked
  • Revised areas rechecked against the code edition you name
  • Possible cost or time impacts flagged for the architect

Checked against

The code and documents behind every sheet

Name the editions the project is designed to and Nomic checks its own drawing against them before handing it back. Your engineer or architect of record makes the final call and stamps the set.

  • AIA A201 General Conditions, minor changes in the work
  • AIA G710 Architect's Supplemental Instructions
  • The project specifications and instructions to bidders
  • The code editions the project is designed to
  • Your firm CAD standards for clouds and revision schedules

How it works

From a sentence to a stamped set

  1. Step 1

    Ask for the drawing

    Say what the sheet needs to show and attach the backgrounds, markups, cutsheets, or photos. A sentence is enough to start.

  2. Step 2

    Nomic drafts it in CAD

    Nomic works in CAD on its own computer, on your layers and blocks, following how your firm drew the same thing before. It saves real DWG files to the project.

  3. Step 3

    Nomic checks its own work

    The drawing is checked against the code editions you name and the source documents. Everything Nomic drew is clouded, and open questions are listed.

  4. Step 4

    Your team reviews and stamps

    Your engineers and architects review the clouded changes, make the final call, and issue the set under their own stamp.

FAQ

Frequently asked questions

An addendum changes the bidding documents before bids are due and becomes part of the contract. An ASI, often issued on AIA G710, gives the contractor a minor change or clarification during construction that is not meant to change the contract sum or time. A bulletin is a firm or owner term for a package of revised drawings, often issued to price a change before a change order.

Yes. Nomic writes the narrative from the edits it made to the drawings, listing each reissued sheet and specification section with a short description of the change. Your team edits the wording before the addendum goes out.

Yes. Nomic adds the issue number, description, and date to the revision schedule on every reissued sheet and places the matching delta at each cloud, following your firm's numbering and clouding standard.

The architect, with the owner and contractor. Nomic flags edits that look like added scope or cost so the team can decide whether to issue a proposal request instead, but that decision and the contract administration stay with your team.

Keep reading

Related drafting work

AI Drafting for Plan Check Corrections

Revises sheets for each correction comment, clouds them with a delta, and drafts the response letter.

AI Drafting for Architectural Background Updates

Compares background revisions, updates the affected MEP and structural sheets, and clouds each move.

AI Sheet Setup and Title Block Drafting

Layouts, viewports, title blocks, revision blocks, plot sets, and transmittals from your sheet index.

AI As-Built and Record Drawing Drafting

Field markups and redlined sets turned into clouded, tagged record DWGs with a list of changes.

What is an addendum?

Changes to the bidding documents before bids are due.

What is an ASI?

Architect's supplemental instructions issued during construction.

What is a construction bulletin?

A package of revised drawings issued during a project.

AI Addenda, ASI, and Bulletin Drafting in DWG | Nomic