Understanding planning constraints is essential for assessing your land's development potential and value.
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Areas where character and appearance are protected by planning law. Properties in conservation areas need planning permission for changes that would normally be Permitted Development elsewhere.
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Buildings of special architectural or historic interest. Listed property alterations require Listed Building Consent and specialist guidance.
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Restrictions on Permitted Development rights in specific areas. If your site is covered by an Article 4 Direction, you may need planning permission for works normally allowed.
Learn more →Hillingdon is extension-dominated: rear extensions (50%), storey additions (49%), and roof work (26%) reflect strong demand for space in West London's outer suburbs. With large plots, generous gardens, and significant greenbelt land under national review, Hillingdon offers development opportunities from garden builds to new dwellings that inner boroughs cannot match.
Hillingdon garden and extension plots are sought despite the higher refusal rate. Understanding your site's exact constraints and extension potential helps attract experienced buyers who know how to navigate local planning.
With a 23.8% refusal rate, Hillingdon requires careful planning approach. However, the consistency of extension applications shows strong buyer demand for garden and extension potential despite planning complexity.
Constraint data alone doesn't tell you if your land has development potential or real value. Get a free architect-led assessment of your site's worth and what's actually buildable.
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