Conservatories, sheds, and garages are the most searched home improvement projects on Google before submitting a planning application, according to new research. Homeowners may spend up to £3,500 on architectural drawings to support their applications.
The findings coincide with the launch of a free Householder Insights Tool by the national Planning Portal, a joint venture between TerraQuest Solutions Limited and the Ministry of Housing, Communities & Local Government. The tool uses real data to help homeowners understand what they can do with their property.
Planning Applications and Search Trends
In the first seven months of 2026, 7,271 applications were submitted in England for large home extensions, with 39% in London. Homeowners risk losing thousands if applications are refused. Google searches for planning queries have climbed 10% in a year, according to Google Trends data compiled by Planning Portal.
The top 10 projects researched between January and August 2026 include conservatories, sheds, garages, extensions, loft conversions, garden rooms, air conditioning, solar panels, fences, and driveways. Search interest in air conditioning quadrupled amid summer heatwaves.
New Tool Offers Free Reports
The Householder Insights Tool provides three complimentary property reports monthly, highlighting local planning activity. It combines local regulations, permitted development rights, and historical decision data to indicate approval probability on a scale from "unlikely" to "very likely".
Geoff Keal, CEO at TerraQuest, said: "We all want to make the most of our properties, which is why so many of us consider bespoke upgrades that tailor our homes to meet our families' individual needs. Yet planning rules can be confusing because they vary by area to allow for local accountability and to protect the distinctive character of different neighbourhoods. A project can be allowed in one place, but not in another. That means it's easy to be overwhelmed by advice that might seem like it contradicts itself."
AI and Social Media Influence
Earlier this year, Planning Portal introduced AskNavi, an AI facility trained on proprietary data to answer planning permission queries with greater precision than mainstream AI platforms. Common questions include regulations about windows, rear extensions without permission, pergola requirements, and side extensions for semi-detached houses.
While TikTok and Instagram provide stylistic inspiration, they rarely capture planning realities, creating a disconnect between attractive ideas and what's possible on a specific street. The new tool aims to bridge that divide.
