How Your Data Powers Fairer Quotes

Last updated: January 2026

Why we collect data

Builders have priced thousands of jobs. You've priced one. That information asymmetry costs homeowners money. We're fixing it.

The more people contribute, the harder it becomes for builders to overcharge.

How it works

You tell us about your project

We estimate costs using real data from similar projects in your region

You upload builder quotes

We flag overpricing, missing scope items, and show how your quotes compare

You share what you paid (optional)

You unlock “What Others Paid” and help the next homeowner get a fairer deal

What we store

Your input	What we store	Why it matters
Postcode	District only (e.g., “AL4”)	Regional pricing varies 40%+ across the UK
Project details	Type, size, spec level	Accurate estimates need accurate inputs
Builder quotes	Anonymised pricing data	Spot overcharging and power community benchmarks
Your outcome (optional)	What you actually paid	Helps others avoid overpaying

Our commitment

Your postcode district is stored, never your full address

Quote details improve our detection of overpricing

Contributed outcomes are anonymised before others see them

We never sell data or contact you for marketing

We never share your data with builders

We never identify you or your property to others

Data retention

Data type	Retention	Details
Uploaded documents	90 days	Auto-deleted after processing
Project data	Until you delete	Anonymised in aggregates
Contributions	Indefinite	Powers community insights
Your account	Until you delete	Full removal on request

Third-party services

Anthropic Claude (AI)

Extracts data from uploaded quote documents. Processed under Anthropic's API terms.

PropertyData

Provides regional construction pricing benchmarks.

Postcode.io

Validates postcodes and determines your region for pricing adjustments.

PostHog (analytics)

Product analytics, hosted in the EU. Runs in cookieless, anonymous mode by default for all visitors — no cookies, nothing stored on your device, and your IP address is not retained. If you accept analytics cookies it switches to cookie-based analytics, and for signed-in users links usage to your account email. Processed under PostHog's privacy policy.

Google (Analytics & Ads)

Loaded only if you accept analytics cookies. Google Analytics measures site traffic and Google Ads conversion tracking measures which ad campaigns lead to sign-ups. Processed under Google's privacy policy.

Your rights (UK GDPR)

Access your personal data

Correct inaccurate data

Request deletion of your data

Object to processing

Data portability

Withdraw consent at any time

Contact us

For privacy-related inquiries or to exercise your rights, contact us at: info@mybuildally.co.uk