Build cost estimates

Cost estimates

Remove the client stress over build costs with our free RICS-method cost calculator
Contractor matching

Contractor introductions

Reduce your effort pulling together your client’s tender shortlist with architect-reviewed contractors
Vet any builder

Builder verifications

Thoroughly check up your client’s builder before getting into any tricky situations

Free for occasional use

Occasional Users

For giving it a go and a few projects annually


Free forever
Setup takes minutes, no credit cards required
Contractor introductions
2 monthly cost estimates
2 monthly builder verifications
6 annual project tenders
Homeowner access
Bulk tender document sharing
Tender chats that protects privacy
Save 8 hours a month on average

Growing Practice

Most popular
For young architect studios wanting to service clients efficiently


Per month per business account
1 month free trial
Everything in Occasional Users, and
x3 the allowance of cost estimates, builder verifications & project tenders
Multi-user account
Video chat
AI tools (coming soon)
Phone support
Save 27 hours a month on average

Large Practice

For studios growing into larger projects with more client needs


Everything in Growing Practice, and
Unlimited volume of cost estimates, builder verifications & project tenders
Advanced security & controls
Audit log
Dedicated success manager

What architects are saying

Giles Bruce. Director, A-Zero Architects

“I’ll be honest, I was really sceptical of online introductions but Weaver found our clients two of the best contractors we’ve worked with in years

Giles Bruce
Director, A-Zero Architects
A-Zero Architects, Middle Room Project, Back of the house.
A-Zero Architects, Middle Room Project, Kitchen.
A-Zero Architects, Middle Room Project, Hallway.
A-Zero Architects, Middle Room Project, Kitchen.
A-Zero Architects, Middle Room Project, Back of the house.
Pictures from A-Zero Architects

Profiles that display quality

Contractor profiles designed to help you find the best out there

Verified past projects

Save time trawling the internet for the builder’s relevant work experience – with our chronologically listed past projects. And every one is verified by us with a phone call.

Wondering how much vetting has been done? Just look out for the Weaver badge. The more verified projects the builder has, the higher they rank - bronze, silver and gold!

Badges that reflect experience
Companies House information

You know that it's a real business, as Weaver profiles sync with Companies House. And your client can see this too.

As architects, you've seen good images hide the truth. With vetting & behavioural stats on Weaver profiles, we're making sure there's no gaming quality.

Contractor statistics

Frequently asked questions

Builder while at work, smiling

Stay in control

Communicate with contractors as you would in emails, including multiple file sharing. Invite the homeowner if you want to. Easily escalate any conflicts to Weaver using the logged communication history.
Chat feature

Intelligent vetting

We have a formula for finding the best contractors. Our founders spent years in construction so they could apply their learnings to screening for quality.

We call up every known project the contractor has worked on

With our verified references, you know that a Weaver builder's project experience is real (avoiding what the BBC investigators discovered at Rated People & MyBuilder). We also show this information on every contractor profile.


Our company risk assessment spots negative signals

We work hard to avoid bad actors on our platform by scanning for numerous red flags. For example, we screen for dissolved companies the Directors have been members of.

House & Builder Van

We vet both sides – homeowners and contractors

We know that great projects happen when contractors and homeowners trust & respect each other. We promote this by ensuring a great match, and when both sides have been equally verified.

Check List

Contractors are continually assessed

We designed our marketplace so that contractors who act their best can obtain the most work. The platform displays metrics that reflects great service and promotes good behaviour.

Pull a shortlist together faster than ever

Find contractors other architects like to use. Get your client a free RICS-method build cost estimate. Ask for any builder to be vetted.