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Ecology & Arboricultural Consulting

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Extended Phase 1 Habitat Surveys

Eight Associates’ fully qualified ecologist’s carry out this survey at the early stage providing habitat information and the plant species assemblages present. The survey can be conducted all year round, at the pre-planning or during the planning process.

Preliminary Ecological Appraisal (PEA)

A PEA includes a desktop study, Phase 1 habitat survey and protected species assessment to provide a baseline data of the site to inform further surveys and likely ecological enhancements. PEAs can be conducted throughout the year.

Ecological Constraints and Opportunities (ECOP)

Eight Associates’ experienced ecologist’s provide an annotated plan that identifies an existing site and the areas with protected species potential and ecological enhancement. Often required as part of the planning process or pre-planning early assessments, and can be conducted throughout the year.

Protected Species Assessment

Eight Associates ecologists are experienced in completing protected species surveys. A site survey identifies the likely presence of relevant protected species and further surveys that may be required. Protected species assessments are carried out by one of Eight Associates’ Suitably Qualified Ecologists. The time frames vary depending on the species’ hibernation and activity patterns, so these surveys are important from a project management perspective. Please consult our ecology calendar or call us to discuss your project.

Ecological Impact Assessment (EcIA)

Our Suitably Qualified Ecologists deliver an ecology report with results of a site’s Preliminary Ecological Assessment (PEA), protected species surveys and details of a site’s ecological mitigation and enhancement strategy. Specifying an EcIA is often the most time and cost effective way to meet planning process requirements.

Protected Species Surveys


Tree/building inspections – An inspection of trees and buildings that evaluates bat roosting features, and determines bat roosting potential. Please note that tree/building assessments can be carried out throughout the year.

Detector surveys – Dawn and dusk bat surveys and call analysis to determine the presence of roosting bats within buildings and trees. Bat activity surveys should be conducted from May to September and hibernation surveys are carried out between December and February.


Breeding bird surveys – An assessment of suitable habitats and completion of bird survey transects to determine how breeding bird populations utilise a site. Breeding bird surveys can be conducted from late March to June.

Pre-clearance nesting bird check – A site visit to determine the presence/absence of nesting birds prior to vegetation clearance or works starting on a site, typically occurring between March and August.


A badger habitat suitability assessment with sett activity monitoring. This can also include bait marking territory surveys. The optimal time of the year to conduct these surveys is February to April and then September to November.

Great crested newts

Great crested newt surveys should be carried out between mid-March and mid-June. Site visits using a range of survey techniques such as netting, bottle trapping, egg searches and torching to determine the presence/absence of great crested newts. Habitat Suitability Index of ponds can be carried out year round.


Surveys to determine the presence/absence of reptiles and the populations present are carried out May to June and September.


A dormouse habitat suitability assessment, followed by nut searches and nest tube surveys to establish the presence or absence of dormice populations.

BREEAM/CSH Ecology Reports

Eight Associates ecologists are also BREEAM experts and carry out reports to satisfy BREEAM criteria for LE 02 – LE 05, with a site visit from a Suitably Qualified Ecologist. BREEAM 2018 Route 1 and Route 2 service options available.

Green Infrastructure Design

Eight Associates provides expert advice on suitable systems, design and planting of green roofs and walls to optimise biodiversity gain.

Biodiversity Management Plans

Long term ecological management plans tailored to on-site habitats, Eight Associates provides pragmatic advice for proposed ecological enhancements.


Pre-Acquisition Tree Surveys – A preliminary visual inspection of trees and feedback in regard to the tree constraints on the potential development site.

BS 5837:2012 Tree Surveys and Tree Constraints Plans – Tree Survey detailing species name, dimensions of the trees, structural condition and the BS 5837: 2012 categorisation. A Tree Constraints Plan maps the trees and their Root Protection Areas.

Arboricultural Implication Assessments – A document considering how a proposed development and its associated trees will co-exist and interact, addressing issues such as statutory constraints, the construction of the proposed development, alternatives to tree loss and infrastructure requirements.

Arboricultural Method Statements and Tree Protection Plans – A report outlining a schedule of tree work operations and a sequence of build events in relation to the trees, proposing appropriate mitigation.

Arboricultural Clerk of Works and Management Plans – On site advice and support to provide compliance with method statements and management plans throughout the construction process.

Landscape Urban Design

Eight Associates offers a full range of Landscape Urban Design services, including Landscape Architecture, Urban Design, Masterplanning, Landscape Visual Impact Assessments (LVIAs)

Construction Ecology Services

Watching Brief – Eight Associates provides pragmatic and helpful ecologist presence at site to oversee work that has the potential to impact on protected species and their habitats.

Toolbox talks – Site-specific information for construction workers regarding protecting wildlife on site.

Construction Environmental Management Plans – Eight Associates produces a tailored document outlining how contractors will ensure adverse environmental effects of development activities are mitigated.

Client Quotes
"Eight Associates is a lovely company to deal with and I recommend with enthusiasm anyone who would consider them. They are diligent and professional, usually actioning before their deadlines – great team players."
Steve Reynolds
Director, Thornton Reynolds Engineering Consultancy
"Our experience of working alongside Eight Associates on a variety of projects is of a professional and progressive company. Clients benefit from an efficient multidisciplinary approach, that provides a very effective service to developers, architects, institutions and property owners in relation to their environmental, ecological, planning and sustainability matters."
Jason Mills
Writtle Forest Consultancy Ltd.
"Eight Associates has provided invaluable sustainability advice for our RIBA award-winning boarding house at Brighton College, for both the BREEAM assessment and ecology. They were able to ensure we met Brighton and Hove Council's stringent Sustainability Policy in a very tight timeframe. I have found Eight to be a breath of fresh air and have already appointed them on our next development."
Steve Patten
Projects Director, Brighton College
"Eight Associates has worked for Cadogan for many years to help us reach our objective to develop more sustainable buildings on the Estate. We have found their assistance in helping us to achieve this objective invaluable and Eight Associates form an integral part of the develop team in reaching this goal."
Nicholas Dutton
Head of Building Surveying, The Cadogan Estate
"The Green Register really values eight associates' commitment to the promotion of sustainable building in all areas of their work."
Lucy Pedler
Director, The Green Register of Construction Professionals
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