The building expert
that sits
on your side.
Tell Bob about your project — get a free downloadable estimate in seconds.
3 STEPS TO A FAIR PRICE
From first idea to final sign-off — Bob has your back.
Describe your project & get your free estimate
Tell Bob what you're planning — in your own words, a photo, or an inspiration image. Get a free, accurate estimate with regional pricing in seconds.
Contact local builders & analyse their quotes
Bob reaches out to top-rated local builders on your behalf — no cold calls, no sharing your number. When quotes come back, Bob analyses every line for red flags and overpricing.
Never overpay — stay in control
From contract red flags to snagging lists, Bob stays with you until the job is done. Your money, your project, your terms.
Why use Bob?
Stop guessing your renovation costs.
Real UK pricing. Real trade logic. Built to protect your budget.
Here's why homeowners need Bob:
50%
of homeowners fail to stick to their renovation budget — unexpected costs are the norm, not the exception
Source: Houzz UK Home Report 2025
+38%
increase in UK building material costs since 2020 — pricing is harder to read than ever
Source: Dept for Business & Trade 2025
78%
of UK homes were built before 1980 — hiding costly surprises builders spot but homeowners miss
Source: Home Builders Federation
Here's why Bob is different
Not just smarter — built specifically for you.
Hover any card to see what sets Bob apart
Not the national average.
Not the builder's.
Full protection.
Hover any card to learn more
Simple, honest pricing
Pay once. Own your project.
No subscriptions. No hidden fees. Just protection when you need it.
Free
£0
No card · No catch · Always free
- Instant AI estimate with regional pricing
- Downloadable PDF to share with builders
- Top-rated local builder shortlist
- 1 free estimate tweak with Bob
- Full bill of materials
- Unlimited Bob refinements
- Builder outreach & quote tracking
- Quote red flag analysis
- AI room transformation images
Protected
£14.99
per project
Homeowners save an average of £2,400 💪
- Everything in Free
- Full bill of materials — see every screw, tile and labour day
- Unlimited estimate refinements with Bob
- Bob contacts up to 5 builders on your behalf
- Automatic follow-ups — no chasing required
- Quote health check — Bob flags every red flag
- Contract review before you sign anything
- Snagging list at handover — don't pay until it's right
- 3 AI room transformation images included
One-off · No subscription · + £1.99 for 5 extra AI images
All prices per project · One-off payment · No subscription · No hidden fees
Trusted by homeowners across the UK ⭐⭐⭐⭐⭐
"Bob flagged that our builder hadn't included scaffolding in the quote. Saved us from a £1,400 surprise halfway through the job."
Sarah M.
Bristol · Kitchen extension, 12m²
"Bob showed me the mid-range rate for my area was £1,200 less than I was quoted. I negotiated and got it."
James T.
Manchester · Full bathroom renovation
"The PDF estimate alone was worth it. I sent it to three builders and one actually lowered their price on the spot."
Priya K.
London · Loft conversion, dormer
Start here — it's free
Chat with Bob
Your AI Build Buddy — same smart estimate, friendlier flow.
AI Build Buddy