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Planning Permission Pre-Check Plugin for Property Portals

A white-label widget that embeds into Rightmove, Zoopla, and local estate agent websites. When a homeowner views a property listing, they see a 'Check if your renovation needs planning' button. Clicking it opens a lightweight form asking postcode, property type, and renovation intent (windows, doors, loft, extension). The plugin instantly returns the planning status using cached council rules + property data APIs, with a 'Get Full Assessment' upsell button if the answer is 'Uncertain'.

PLUGIN

14 weeks • 70% confidence

Value Proposition

Portals gain a sticky, high-engagement feature that keeps users on-site longer and positions them as 'helpful' (not just transactional). They monetize via CPC (cost-per-click) to the full assessment service or via referral fees. Homeowners get instant clarity while browsing, reducing post-purchase regret. Beats standalone tools because it's contextual and embedded where decisions are already being made.

Target Audience

Property portals (Rightmove, Zoopla, Purplebricks), estate agents, property tech platforms; indirectly, homebuyers and renovators discovering the tool on listings

Key Features

  • Embeddable iframe widget (3 lines of code to integrate)
  • Instant postcode + property-type lookup
  • Real-time planning rule engine (cached council data)
  • And more, with full implementation detail...

Tech Stack

React (widget framework) Postcode API (UK postcode lookup) ONS API (property classification) Node.js backend (rule engine, referral tracking)
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Original Problem

Homeowners unable to determine if window replacements need planning permission before starting renovations

UK homeowners face costly delays and project halts when they discover mid-renovation that their window changes require planning permission they didn't obtain. Current solutions require hiring expensive consultants or contacting local councils with slow response times, leaving homeowners uncertain about legality and facing potential fines or forced reversals of completed work.

Score: 17.5%