Built for construction

Your AI team for
construction.

Bids, client updates, invoicing, marketing, project docs — handled by AI employees that know your trade inside out.

Book a free demo 30 min · free

Sound familiar?

You build things for a living — not chase paperwork and write proposals.

📋

Bids take forever to write

Every estimate is custom. Hours writing proposals that might not even land.

📞

Clients want constant updates

"What stage are we at?" "When will the plumber come?" — texts all day long.

🔍

Word of mouth only

No website, no Google presence. New leads only come from referrals.

💸

Invoicing is a mess

You finished the job 3 weeks ago. The invoice still hasn't gone out.

📱

Zero online presence

Competitors post job photos on Facebook weekly. You haven't posted in months.

📊

No clue on margins

Which projects are profitable? Which subs are costing you? You're guessing.

What if the office ran itself?

Bids go out on time. Clients stay informed. Invoices land. You focus on building.

See it in action

How it works

From zero to autopilot in four steps.

01

Drop your website

Paste your URL and Sintra learns your brand — voice, colors, products, personality — in minutes.

www.ironcladbuilds.com
Learning your brand...
02

Connect your tools

Link Instagram, Shopify, email, calendar — everything syncs automatically.

instagram
shopify
stripe
google-mail
google-calendar
facebook
All connected
03

Your AI team gets to work

Posts, emails, customer replies, SEO — your helpers handle it all in your brand voice.

Your AI team
SoshieScheduled 7 Instagram posts
CassieAnswered 12 DMs
SeomiSEO audit complete
04

Review & approve

Everything runs through you. Approve, edit, or go full autopilot.

Instagram post ready
Scheduled for tomorrow 9 AM

Your AI crew

Set it up once. It runs the office.

Each helper handles a different part of your construction business.

Showcases your work

All-in-one marketing

Everything your business needs. One platform.

Skip the tools, templates, and tabs. AI-powered content for every marketing channel.

Project Timelapse
Project TimelapseYouTube
Drone Footage
Drone FootageInstagram
Build Walkthrough
Build WalkthroughTikTok
Client Testimonial
Client TestimonialFacebook

Use cases

Everything it handles for your construction business.

48 capabilities across 6 categories — and growing.

📱

Online Presence

Project progress photo posts
Completed build showcases
Before/after transformations
Client testimonial content
💬

Client Communication

Project milestone updates
Weather delay notifications
Change order confirmations
Invoice & payment reminders
📋

Bids & Proposals

Bid proposal drafting
Estimate follow-up sequences
Scope of work documents
Subcontractor RFP writing
📧

Marketing & Email

Past client referral campaigns
Seasonal service promotions
New service announcements
Project completion showcases
🏗️

Operations & Docs

Safety documentation
Project report generation
Contract template creation
Insurance certificate tracking
📊

Business Intelligence

Job profitability analysis
Revenue by project type
Bid win rate tracking
Crew utilization reports

Integrations

Connects with your project tools.

900+ integrations. Project management, accounting, and more.

shopify
instagram
facebook
slack
notion
stripe
google-calendar
github
linkedin
youtube
tiktok
quickbooks
dropbox
google-mail
outlook
meta-ads
xero
shopify
instagram
facebook
slack
notion
stripe
google-calendar
github
linkedin
youtube
tiktok
quickbooks
dropbox
google-mail
outlook
meta-ads
xero
shopify
instagram
facebook
slack
notion
stripe
google-calendar
github
linkedin
youtube
tiktok
quickbooks
dropbox
google-mail
outlook
meta-ads
xero
tiktok
quickbooks
dropbox
google-mail
outlook
meta-ads
xero
hubspot
salesforce
attio
asana
discord
google-analytics
google-drive
google-sheets
linear
microsoft
tiktok
quickbooks
dropbox
google-mail
outlook
meta-ads
xero
hubspot
salesforce
attio
asana
discord
google-analytics
google-drive
google-sheets
linear
microsoft
tiktok
quickbooks
dropbox
google-mail
outlook
meta-ads
xero
hubspot
salesforce
attio
asana
discord
google-analytics
google-drive
google-sheets
linear
microsoft
asana
discord
google-analytics
google-drive
google-sheets
linear
microsoft
trello
webflow
wordpress
strava
todoist
google-ads
google
shopify
instagram
facebook
slack
notion
stripe
google-calendar
github
linkedin
youtube
asana
discord
google-analytics
google-drive
google-sheets
linear
microsoft
trello
webflow
wordpress
strava
todoist
google-ads
google
shopify
instagram
facebook
slack
notion
stripe
google-calendar
github
linkedin
youtube
asana
discord
google-analytics
google-drive
google-sheets
linear
microsoft
trello
webflow
wordpress
strava
todoist
google-ads
google
shopify
instagram
facebook
slack
notion
stripe
google-calendar
github
linkedin
youtube

900+

Integrations

Real-time

Data sync

2 min

To connect

0

Code required

Powered by the best

Every leading AI model.
One platform.

GPT-4o
GPT-4o
Claude
Claude
Gemini
Gemini
Seedance
Seedance
Kling
Kling
ElevenLabs
ElevenLabs
Sintra
Videos
UGC reels, product ads, brand stories
Seedance · Kling · Runway
Images & Copy
Graphics, blog posts, ad copy, emails
Claude 4 · GPT-4o · Nano Banana
Websites & Slides
Landing pages, pitch decks, portfolios
Claude 4 Opus · Slide engine

Models updated continuously — always the latest

Privacy & Security

Your project data is locked down.

🔒

End-to-end encryption

TLS 1.3 in transit, AES-256 at rest.

🚫

Never used for training

Your bids, pricing, and project data stay yours.

🏛️

SOC 2 practices

Access controls, audit logging, monitoring.

🇪🇺

GDPR compliant

Full EU data protection compliance.

🗑️

Delete on request

Full deletion. No hidden copies.

👁️

Access controls

Role-based permissions and audit trails.

Real results

From solo founders to growing teams. Real stories.

40,000+

Entrepreneurs

20+ hrs

Saved / week

100+

Countries

900+

Integrations

RH
Rebecca Haddock
EquiTecs
Feb 2025
60+ hrs/week

I save 60+ hours a week. My entire team uses Sintra daily — it rebuilt our website in 3 days. Everything ready without babysitting. 10/10.

RH
Rebecca Haddock
EquiTecs
Feb 2025
60+ hrs/week

I save 60+ hours a week. My entire team uses Sintra daily — it rebuilt our website in 3 days. Everything ready without babysitting. 10/10.

Sintra Customer
Sintra Customer
Watch their story
CV
Christina Vigeant
Tangled Trails Gear
Mar 2025
40 hrs/week

About 40 hours saved per week. Cleaned up a 10,000+ product catalog. Sales and Facebook engagement are way up.

MI
Marco Imhof
Food Consult Nordic
Mar 2025
+28% revenue

Revenue up 28% in 3 months. Documentation turnaround cut by 90%. The AI team just keeps delivering.

Sintra Customer
Sintra Customer
Watch their story
BC
Brendon Carl
WinWin Process Serving
Feb 2025
+109% engagement

$2-3k/month increase in revenue. 109% increase in engagement. 10-15 more leads per month. I even launched multiple new businesses.

Sintra Customer
Sintra Customer
Watch their story
BW
Barry White
B Dubb Grows
Jan 2025
98/100 SEO

SEO score went from 62 to 98. First page on Google. Days of work done in under an hour.

SB
Stuart Baddiley
Optimise Your Marketing
Mar 2025
£100k added

25-30 hours saved per week. LinkedIn engagement is through the roof. Added £100k to the business through capacity expansion alone.

Sintra Customer
Sintra Customer
Watch their story
SR
Scott Regan
LeadWorks
Jan 2025
15-20 hrs/week

Website builds reduced from months to days. 15-20 hours saved per week. More new business closed than ever.

JM
Jonathan Marshall
TotalHome Hub
Mar 2025
30+ hrs/week

30+ hours saved per week. 6 months of progress compressed into 2. Built product and marketing entirely solo with Sintra.

Sintra Customer
Sintra Customer
Watch their story
BH
Beatrice Hohl
4else.com
Feb 2025
5-10 hrs/week

Proposals close in days now, not weeks. Solo founder output at small-team scale.

No more juggling between different AI tools.

Content. Marketing. Follow-ups. Admin. Strategy.
When everything runs through one person, execution always breaks.

Sintra
ChatGPT
Claude
Lindy
Marblism
Social Media Posting
Social Media Scheduling
Email Marketing Management
Website Creation
Calendar & Meeting Management
Meeting Note-Taking
SEO Optimization
Marketing Plan Creation
Automated Copywriting
Business Analysis
Sales Script Creation
Image Generation
Get Sintra

See it in action

The blueprint.

Click through to see how Sintra looks for your construction business.

Dashboard

Revenue, bids, project updates, and lead pipeline — your whole operation at a glance.

Ironclad Builds
New chat
Home
Inbox1
Analytics
Automations
Tasks
Community
HelpersNew
Workspace
Brain AI
Integrations
Calendar
Chats
Search...
Weekly content plan...
Update product catalog
Customer email draft...
SEO keyword research

Happy to see you here, Mike!

Soshie
Soshie
Social Media
Cassie
Cassie
Client Enquiries
Commet
Commet
Website Builder
Seomi
Seomi
Local SEO
Milli
Milli
Lead Generation
View all
Send a message
Pro
Introducing Team ChatBETA | Chat with all helpers at once!Learn more
Next best actions
Share project completion photos
Soshie drafted 4 posts from the kitchen renovation wrap-up
Review posts
Follow up on 3 estimates
Milli has personalized follow-up emails ready
View emails
Your finances
QuickBooks
7dToday
Revenue
$142,800
+21%
Previous period
$118,500
Cash at bank
$287,000
P/L
$68,400
Expenses
$74,400
Your social posts
Published posts
8
People reached
18,600
Interactions
342
Your tasks
Needs attention 2
Weekly project update post
Completed · Today 8:00 AM

Questions

Frequently asked

Your crew deserves a full office behind it.

30-minute demo. See how Sintra keeps your pipeline full.

Book your free demo

14-day money-back guarantee · No card for the demo

Book a free demo
30 min · free · personalized