Environmental Impact

Trees and hedgerows

Trees covered by a Tree Preservation Order (TPO), or any tree within a conservation area, get specific protection - check your council’s TPO map or the application documents for a tree survey. Even without a TPO, the loss of mature trees that contribute to the character of the area or provide meaningful screening is a material consideration worth raising, particularly if the application doesn’t include a replacement planting plan.

Protected species and biodiversity net gain

If there is credible evidence that the site could support protected species such as bats, nesting birds or great crested newts, and no ecological assessment has been provided where one might reasonably be expected, that is worth raising with the planning authority. Many developments in England are now required to deliver at least 10% biodiversity net gain, although exemptions apply to certain types of development, including many householder applications and some smaller sites. If the application’s biodiversity net gain plan looks thin or absent where it should apply, that’s a legitimate, specific point to raise rather than a general ecological concern.

Flood risk and drainage

If the site is in or near a flood zone, or if the area already has known surface-water drainage problems, raise it specifically - reference the flood zone if you know it, or describe past flooding you’ve witnessed on or near the site. Increased hard surfacing (large extensions, paved-over gardens, new driveways) that reduces permeable ground is also a legitimate drainage concern, especially where sustainable drainage (SuDS) provision in the application looks inadequate.

Where it tends to fail

General statements like “this will harm the environment” or “we need more green space” without naming a specific tree, species, watercourse, or flood risk are easy to set aside. The strongest environmental objections read like a checklist against the application’s own documents - what survey is missing, what tree isn’t accounted for, what flood risk isn’t addressed - rather than a general statement of concern.

A worked example of a weak objection versus a strong one

Weak: “This garden is full of wildlife and cutting down the trees to build this will be terrible for the environment.” A genuine concern, but it names nothing a case officer can check.

Strong: “The application proposes removing the large oak tree at the rear of the garden, which is not shown as protected by a Tree Preservation Order on the council’s TPO map but visibly contributes to the street’s tree canopy and screens neighbouring properties from view. The submitted plans do not include a tree survey or a replacement planting proposal. I’d ask the council to require an arboricultural assessment before determining the application, and a replacement planting condition if removal is permitted.” The second version names the specific tree, checks its actual protected status, points out a genuine gap in the submitted documents, and asks for something concrete.

Common mistakes to avoid

• Assuming any tree loss is automatically protected or objectionable - check whether a TPO or conservation area actually applies before leading with that claim, since an incorrect claim is easy for a case officer to dismiss and can undermine the rest of the objection
• Raising protected species concerns without any actual basis - a general assertion that “there might be bats” carries far less weight than pointing to a specific feature (an old outbuilding, mature trees, a gap under roof tiles) that could plausibly support them
• Overlooking what’s already in the application’s own submitted documents - if an ecological survey or biodiversity net gain statement has already been provided, engage with what it actually says rather than objecting as if none exists
• Treating flood risk as automatically disqualifying - many sites in lower flood risk zones are routinely granted permission with appropriate drainage conditions, so the stronger objection points to specific inadequacies in the proposed drainage or SuDS provision rather than the flood zone designation alone