Transcribe on-site walkthrough notes and generate punch list items for review
Superintendents can now simply talk through their site inspections and have structured punch lists automatically generated and synced to their project management software. This gives MSPs a high-visibility, easy-to-pilot wedge offering that instantly saves construction clients thousands of dollars in wasted labor.
The problem today
4 hours
wasted manually typing up each site walkthrough
$1,500
lost weekly in superintendent labor per site
Mike Callahan is the lead superintendent for a regional general contractor in Charlotte running 4-6 concurrent residential and light commercial projects. He's sharp in the field but spends two or three nights a week at his kitchen table turning the day's walkthrough notes into punch lists because there's simply no other time to do it.
01The Problem
Half a workday burns before a single trade receives direction from that site visit.
Two full days of superintendent capacity absorbed by documentation instead of catching schedule and budget risk early.
A deficiency missed in illegible field notes resurfaces as a closeout dispute weeks after the fix would have cost nothing.
Voice memos and photo dumps require manual sorting before subcontractors get anything worth acting on.
Late or incomplete punch lists send subcontractors in blind, wrong scope gets done, and the superintendent returns twice.
Deficiencies recalled from memory after a ten-hour day land on the wrong trade, the wrong location, or disappear entirely.
02The Solution
Solution Brief
Fictional portrayal · illustrative
- Mike Callahan runs 4–6 concurrent Charlotte projects simultaneously
- Field notes — legal pad, voice memos, 60 unsorted photos — rebuilt nightly at kitchen table
- Two to three nights a week lost before punch list reaches a single trade
- 15+ hrs/week of documentation generates zero billable value
- Late punch lists send subcontractors in without clear scope
- Missed deficiencies compound into $12K closeout disputes
- Mike runs thinner while projects run slower — same week, every week
- Recorder clipped to vest; Mike narrates as he walks each unit
- Audio transcribed, parsed, and structured into Fieldwire before he reaches his truck
- Ten-minute phone review; trades have assignments before lunch
- Pilot stands up for under $300 — value visible within first two walkthroughs
- $500–$2,000/mo per client; natural upsell across full field teams as word spreads
“I used to come home from a walkthrough knowing exactly what needed to get done and then spend three hours trying to get it out of my head and into a format the subs could use. Now I talk while I walk and the list is just there. I don't know why we didn't do this years ago.”
— Mike Callahan is the lead superintendent for a regional general contractor in Charlotte running 4-6 concurrent residential and light commercial projects
03What the AI Actually Does
Walkthrough Transcription Engine
Converts raw field audio — narrated on the move, in noisy environments — into clean, readable transcripts in near real-time. Handles construction terminology, accents, and background noise without requiring a quiet room or a headset.
Punch List Parser
Reads the walkthrough transcript and automatically extracts structured punch list items, tagging each one with location, responsible trade, priority level, and a plain-language description of the deficiency — ready for superintendent review without manual formatting.
Review & Approval Dashboard
Presents the generated punch list in a clean web interface where the superintendent can confirm, edit, or reject items in minutes, then push the approved list directly to Procore, Fieldwire, or a PDF — no double entry, no copy-paste.
04Technology Stack
WalkPunch
$0/month (free plan for pilot); paid plans TBD for volume
Purpose-built SaaS platform for the exact use case: upload walkthrough audio/video, AI generates trade-sorted punch list with transcript generation, i…
OpenAI API (Whisper + GPT-5.4 mini)
Whisper: $0.006/min ($0.36/hr); GPT-5.4 mini: $0.15/1M input tokens + $0.60/1M output tokens. Estimated $0.20-$0.25 per 30-min walkthrough total.
Core AI engine for the custom pipeline. Whisper API transcribes field audio with excellent noise handling. GPT-5.4 mini processes transcripts to extra…
Deepgram Nova-2
$0.0043/min pre-recorded ($0.258/hr); $200 free credit to start
Alternative/backup transcription API with superior real-time streaming capability. Nova-2 offers competitive accuracy at lower cost than most competit…
Fieldwire by Hilti
Free (5 users, 3 projects); Pro: $39/user/mo annual; Business: $59/user/mo annual
Field management platform for punch list tracking, assignment, and closeout after AI generates items. Provides plan markup, task management, photo ann…
Raken
Core: $15/user/mo; Professional: $30/user/mo; Enterprise: $49/user/mo
Alternative to Fieldwire with native voice-to-text daily reporting capability. If client already uses Raken for daily logs, add punch list module rath…
Procore (existing client subscription)
$4,500-$10,000/yr for small firms (client's existing cost); MSP charges integration fee only
If client already subscribes to Procore, leverage its native Quick Capture voice-enabled punch list feature and REST API for direct punch item push fr…
Amazon S3 (Audio/Video Archive)
~$0.023/GB/mo; estimated $1-$5/mo per client for audio archive
Cloud storage for raw audio files, transcripts, and generated punch list documents. Lifecycle policies auto-delete raw audio after 90 days per complia…
AWS Lambda (Serverless Compute)
~$0.20 per 1M requests + $0.0000166667/GB-second; estimated $5-$20/mo per client
Serverless compute for the transcription-to-punch-list processing pipeline. Runs Python functions triggered by audio file upload to S3. No servers to …
Microsoft 365 Business Basic (or existing tenant)
$6/user/mo (if not already subscribed)
SharePoint/OneDrive integration for punch list PDF delivery to client stakeholders. Teams channel notifications for new punch lists awaiting review. L…
Otter.ai Business
$20/user/mo annual billing; 6,000 min/mo transcription
Optional all-in-one transcription platform for clients who want a simpler managed experience without custom API development. Less construction-specifi…
05Alternative Approaches
SaaS-Only Approach (WalkPunch + BuildPass)
$0-$149/month
Instead of building a custom API pipeline, use WalkPunch (free tier) for walkthrough-to-punch-list conversion and BuildPass ($99-$149/month) for the full construction management workflow. No custom code, no AWS infrastructure, no Lambda functions. The superintendent uploads walkthrough audio/video directly to WalkPunch, which generates the trade-sorted punch list, and items are manually transferred or exported to the client's PM platform.
Strengths
- Significantly lower upfront cost ($0-$149/month vs. $2,000-$5,000 setup + $200-$500/month managed)
- Minimal complexity—any Tier 1 MSP technician can deploy in 1-2 weeks
- No custom code, no AWS infrastructure, no Lambda functions
Tradeoffs
- Less customizable—no client-specific prompt tuning
- No automated PM platform push
- Limited to vendor's extraction model
- Lower recurring MSP revenue opportunity ($50-$100/month vs. $200-$2,000/month for managed custom pipeline)
Best for: Pilot phase validation, very small contractors (1-2 supers), MSPs without developer resources, clients who want fastest time to value.
Native PM Platform Voice Features (Procore Quick Capture / Raken)
Zero additional software cost for existing Procore subscribers; $15-$49/user/month for Raken
If the client already subscribes to Procore or Raken, enable and configure the native voice-capture and punch list features within those platforms rather than introducing a separate AI pipeline. Procore Quick Capture allows video recording with auto-transcription directly into punch items. Raken provides voice-to-text for daily logs and punch lists at $15-$49/user/month.
Strengths
- Zero additional software cost if client already has Procore
- Very low complexity—configuration and training only, no integration development
- Everything in one platform
Tradeoffs
- Less AI-sophisticated extraction—no LLM-powered field parsing
- No automatic trade classification or priority inference
- Requires more manual cleanup
- Limited MSP revenue—training and configuration fees only ($500-$1,500 one-time) with minimal recurring
Best for: Clients already paying for Procore ($4,500+/year), clients who want everything in one platform, situations where the existing PM platform's voice features are 'good enough' without needing AI extraction.
Dedicated Hardware Recorder with PLAUD Subscription
$179 per device one-time + ~$7-$15/month for AI features
Use the PLAUD Note Pro as both the recording device and the AI processing platform. PLAUD's companion app includes AI transcription, summarization, and note extraction capabilities built in. This eliminates the need for any custom backend infrastructure—the superintendent records, the PLAUD app transcribes and summarizes, and the output is manually formatted into punch list items or emailed to the office for processing.
Strengths
- Lowest possible complexity—pure hardware deployment with app configuration
- No AWS costs, no API costs
- Hardware resale margin for MSP ($50-$80 per device)
Tradeoffs
- No construction-specific extraction—PLAUD summarizes generically
- Doesn't parse trade/location/priority fields
- Requires significant manual cleanup to create formal punch lists
- Minimal MSP recurring revenue
Best for: Solo contractors or very small firms (1 super) who want to replace handwritten notes with any form of digital transcription, even without structured output. Good stepping stone to the full solution.
Enterprise Platform (OpenSpace + Procore)
OpenSpace: $3,000-$10,000+/year (custom pricing); Procore: $4,500-$60,000/year
Deploy OpenSpace for 360° visual capture mapped to floor plans, combined with Procore for punch list management. OpenSpace captures the entire site visually during walkthroughs, pins photos to plan locations, and integrates with Procore for punch item creation. This is the gold standard for documentation-heavy projects (healthcare, data centers, high-rise residential).
Strengths
- Highest capability—visual evidence for every punch item
- Time-lapse site documentation
- BIM integration
- Legally defensible record
- High MSP revenue potential ($1,500-$5,000 implementation + $500-$1,000/month managed services)
Tradeoffs
- High cost—OpenSpace typically $3,000-$10,000+/year plus Procore ($4,500-$60,000/year)
- Medium complexity—requires floor plan uploads, camera calibration, and extensive training
Best for: Large GCs, projects >$10M, owner-required documentation standards, firms with existing Procore investment, projects where visual evidence prevents disputes and change order claims.
Deepgram Nova-3 Real-Time Streaming Pipeline
$0.0077/min streaming; ~$0.05 more per 30-min walkthrough vs. Whisper batch
Replace the batch Whisper transcription with Deepgram Nova-3 real-time streaming, generating punch list items in near-real-time as the superintendent narrates. Items appear on the superintendent's phone screen within seconds of being spoken, allowing immediate correction and approval during the walkthrough itself rather than as a post-walkthrough review step.
Strengths
- Superior user experience—items appear live, enabling immediate correction
- Reduces the review step to near-zero
- Negligible additional cost (~$0.05 more per 30-min walkthrough vs. Whisper batch)
- Premium feature justifies $50-$100/month higher managed service fee
Tradeoffs
- Higher complexity—requires WebSocket implementation for streaming audio, real-time UI updates, and edge-case handling for interrupted streams
- Requires reliable 4G/5G on-site
- Slightly higher transcription cost ($0.0077/min streaming vs. $0.006/min Whisper batch)
Best for: High-volume contractors (5+ walkthroughs/day), superintendent preference for real-time feedback, situations where post-walkthrough review is a bottleneck. Requires reliable 4G/5G on-site.
Ready to build this?