Objector is the UK’s first dual AI-powered platform that empowers individuals and communities with the tools and expertise to challenge property planning applications.  We level the playing field, making the objection process faster, smarter, and more effective without paying thousands in consultancy fees.

When you upload the applicant’s planning documents, we use two different AI systems working simultaneously - like getting a second opinion from another expert.

Our dual AI system combines two leading models that analyse your planning application simultaneously. By merging their insights and comparing their findings, we catch valid objection grounds that a single AI might miss.

Through extensive testing of multiple AI models and configurations, our dual AI system emerged as the most comprehensive and accurate approach for UK planning objections.

Objector.ai is purpose-built for planning objections. We don't just generate text - we deliver a complete objection workflow based on those issues that the applicant will most struggle to mitigate, through our impact ranking system - something general AI platforms will not do.

Crucially, single AI platforms can't replicate our dual AI analysis approach. We run two different AI systems simultaneously to catch objection grounds that a single AI might miss. This isn't possible with ChatGPT or similar platforms where you're limited to one AI model at a time. File size limitations mean you would also have to pay for premium access.

Your documents are analysed, prioritised, and stored in one secure place. You generate an objection letters with detailed policy citations, councillor lobbying videos tailored to your case, and committee speeches crafted for planning meetings. Most importantly, you don't need to master prompt engineering or spend hours formatting documents. We handle everything - from upload to ready-to-submit materials - saving you time, effort, and uncertainty.

Both AI systems independently rank each objection ground based on which grounds are the hardest to mitigate.

HIGH IMPACT indicates grounds that applicants will find extremely difficult to address (highway safety violations, inadequate parking, conservation area impacts, etc.)

MEDIUM IMPACT covers grounds that pose significant challenges that may be addressable (design quality issues, amenity impacts, etc.).

LOW IMPACT identifies grounds that present minor obstacles for the applicant (documentation gaps, minor environmental concerns etc.).

The ranking considers relevant planning policies against the application documents. This system helps you prioritise the most powerful objections first, to maximise your chances of successfully defeating the planning application.

Our free analysis checks all valid material objection grounds to identify potential policy issues. If no grounds are identified, this may indicate the application complies with planning policies. We tell you this for free, and recommend that you do not proceed to unlock the objection toolkit.

In cases where our analysis identifies only low-impact objection grounds, we may provide the complete analysis report and objection letter at no charge on request, to support residents who wish to participate in the planning process. See our Terms of Service for full details and email support@objector.ai to make your request.

No, they are powered by two AI models for maximum accuracy. Objector empowers individuals and communities with affordable tools to challenge property planning applications, without paying consultancy fees.  This service does not constitute professional planning advice, and we do not warrant the accuracy, completeness, or suitability of any AI-generated analysis.

Before relying on our outputs in formal objections or submissions, you should satisfy yourself—or seek advice from a qualified solicitor or planning professional—as to their accuracy and relevance.

Objector is a planning policy analysis tool designed to help residents prepare objection materials. We created Objector to support those who wish to challenge planning applications but may not have access to traditional professional services.

Objector is not a registered legal or planning consultancy, and does not provide regulated advice. We do not offer legal or planning services, and our outputs should not be treated as formal guidance. Users should always consult a qualified professional where accuracy, compliance, or formal representation is required.

To get the most accurate results, please upload only the official planning documents from the applicant, found on your local council’s planning portal.  

To find these:

• Go to your local council’s planning portal

• Enter the planning application number (found on the planning application notice)

• Download all documents submitted by the applicant

Ensure your documents are:

• Official – downloaded directly from the council planning portal

• Relevant – linked to the specific planning application number

• Applicant’s Documents – Not statutory consultee or response comments

• Unmodified – the original files, without changes

Most planning applications are in PDF format. We also support Word documents (DOC, DOCX), Excel files (XLS, XLSX), and image files (JPG, JPEG, TIF, TIFF).

You can upload up to 50 files per analysis. Individual flat files: up to 25MB each, with a 40MB total limit across all flat files. ZIP files: one ZIP file up to 25MB maximum (automatically extracted during analysis). All limits apply to desktop and mobile devices.

For major developments or unusually large planning applications (where planning docs exceed 40MB) , we’ll review the documents first and quote a tailored price — you still receive the full objection toolkit (everything in the £45 package), but scaled to the size and complexity of the scheme.

Tell us a few details and we’ll get back to you fast with a fixed, fair fee, and if it’s very complex, we’ll run the analysis for you. Email support@objector.ai.

The following documents will not be analysed - discharge of conditions planning documents, planning appeal documents, pre-application consultations.