SJA Trees
SJA Trees is a UK arboricultural planning consultancy founded in 1995, providing BS5837 surveys, arboricultural impact assessments, expert-witness services and tree risk management to housebuilders, developers, local planning authorities, architects and private estates across London and the South-East.
- Company typePrivate
- Founded1995
- HeadquartersTadworth, United Kingdom
- Headcount1–10
- GTM typeB2B
- OfferingServices
What SJA Trees does
SJA Trees (legal entity Simon Jones Associates Ltd.) is a UK arboricultural planning consultancy founded in 1995 by Simon Jones and headquartered in Tadworth, Surrey. The firm delivers eight core services: trees in planning and development (BS5837 surveys, tree constraints plans, arboricultural impact assessments), trees in construction (protection, method statements, supervision), arboricultural problem solving, expert witness services for planning appeals and Public Inquiries, arboricultural management and risk assessment (including visual tree assessment and TRAQ), Tree Preservation Order applications and prosecutions, woodland and veteran tree management, and tree-related damage and subsidence analysis. Its technical approach is grounded in the National Planning Policy Framework, BS5837, VTA (Mattheck and Breloer) and ISA TRAQ methodologies, delivered by AA Registered Consultants and TRAQ-certified practitioners.
The firm serves a mix of major development and housebuilder clients (including Crest Nicholson, CALA Homes and Landmark Group), local planning authorities, architects and master planners, and private estate owners (including the RAC Estate, Epsom). Revenue is generated through fee-based professional services engagements, with work obtained primarily via referrals, long-standing client relationships and reputation as expert witnesses rather than digital marketing. The company is founder-owned, has no external investors, and operates with a small team of around eight staff serving London and the South-East of England.
SJA Trees firmographics
Firmographics- Name
- SJA Trees
- Legal name
- Simon Jones Associates Ltd.
- Website
- https://sjatrees.co.uk
- Company type
- Private
- Founded year
- 1995
- Operating status
- Operating
- Headcount range
- 1–10 employees
- Short description
- SJA Trees is a UK arboricultural planning consultancy founded in 1995, providing BS5837 surveys, arboricultural impact assessments, expert-witness services and tree risk management to housebuilders, developers, local planning authorities, architects and private estates across London and the South-East.
- Ownership category
- akta.pro rank
SJA Trees industry classification
Industry- Product category
- Arboricultural Consulting Services
- NAICS
- Landscape Architectural Services (541320), Support Activities for Forestry (1153)
- SIC
- Services-Engineering, Accounting, Research, Management (8700), Services-To Dwellings & Other Buildings (7340)
- akta.pro primary industry
- Arborist Consulting, Tree Risk Assessments & Appraisals (HSAIADAJ)
- akta.pro secondary industry
- Tree Preservation & Construction Site Tree Protection (HSAIADAL)
Keywords
Where SJA Trees is headquartered
LocationHeadquarters
- HQ city
- Tadworth
- HQ country
- United Kingdom
- HQ region
- Europe
Offices1 record
Markets served
SJA Trees business model
Business model- GTM type
- B2B
- Offering type
- Services
- Cost components
- Personnel, Operations, Infrastructure, Marketing or Sales, Technology or R&D
Revenue model
- Professional Consultancy Services: Fee-based professional services for arboricultural consultancy including surveys, assessments, reports, expert witness services, and ongoing management advice. Revenue generated through project-based fees for planning applications, construction supervision, risk assessments, and problem-solving engagements.
Pricing tiers
| Model | Billing | Price |
|---|---|---|
| Other | Annual | Office Manager position salary range |
Go-to-market motion1 record
Distribution channels1 record
Marketing channels3 records
SJA Trees product offering
Product offeringCore offering
SJA Trees is an arboricultural planning consultancy that advises on the retention, integration, protection, and risk management of trees in relation to planning, development, and construction projects. Its services span BS5837 tree surveys, tree constraints plans, arboricultural impact assessments, planning application support, on-site tree protection supervision, expert witness work at Public Inquiries, Tree Preservation Order applications, ancient woodland management, and subsidence/damage analysis, delivered to developers, housebuilders, architects, local planning authorities, and private estate owners across London and the South-East.
Product overview
SJA Trees is an arboricultural planning consultancy offering a unified suite of consultancy services rather than a software product. The core offerings span eight interconnected service areas: Trees in Planning and Development (BS5837 surveys and planning support), Trees in Construction (on-site protection and supervision), Arboricultural Problem Solving (complex issue resolution), Expert Witness (legal/appeal support), Arboricultural Management and Risk Assessment (tree safety inspections), Tree Preservation Orders (TPO applications and compliance), Woodland and Veteran Trees (ancient woodland management), and Tree Related Damage (subsidence and structural damage analysis). These services are delivered by a team of qualified consultants and surveyors based in Tadworth, Surrey, serving clients across London and the South-East.
Differentiator
Problem solved
Functional benefit
Products and services
- Trees in Planning and Development Consultancy services for all scales of development sites, including BS5837 surveys, tree constraints plans, arboricultural impact assessments, and planning application support, primarily for developers, housebuilders, architects, and master planners.
- Trees in Construction
- Arboricultural Problem Solving
- Expert Witness
- Arboricultural Management and Risk Assessment
- Tree Preservation Orders
- Woodland and Veteran Trees
- Tree Related Damage
Quantifiable outcome
- Very high success rate - only very rarely are clients' schemes turned down for arboricultural reasons
Companies that use SJA Trees
Customer profileNamed customers4 records
Segments4 records
Ideal customer profiles4 records
SJA Trees technology and API
TechnologyTechnology focussed No
API detail
- Has API
- No
- API docs
- API detail
Core technology
AI maturity
App detail
Feature4 records
SJA Trees partnerships and signals
Strategic signalScale indicators3 records
Recent moves4 records
Expansion highlights3 records
SJA Trees competitors and assessment
Company assessmentEmerging players
- Aspect Ecology: UK ecology and arboricultural consultancy serving residential and commercial developers. Competes with SJA Trees for planning-stage arboricultural input but bundles it with broader ecological services.
- Tyler Grange: UK environmental planning and arboricultural consultancy working with developers on planning applications. Comparable client base and planning-policy expertise, though wider ecological remit.
- Greengage Environmental: UK environmental consultancy providing arboriculture, ecology, and landscape services to developers and planning authorities. Overlapping with SJA Trees on the arboricultural planning side but broader in scope.
Broad incumbents
- FPCR Environment and Design: Large UK multi-disciplinary environmental, planning, and design practice including arboriculture. A broader incumbent that competes with SJA Trees on large development projects where bundled services are preferred.
- EDP (Environmental Design Partnership): UK environmental consultancy providing arboriculture, ecology, landscape, and arboricultural services to developers and local authorities. Larger, broader practice that overlaps with SJA Trees' planning-stage work.
- Stantec (incorporating Barton Willmore): Global engineering and planning consultancy including substantial UK planning and environmental practices post-Barton Willmore acquisition. Competes for large masterplanning mandates where arboricultural input is one element of a broader bid.
Direct peers
- Barton Hyett Associates: UK arboricultural and ecological consultancy offering BS5837 surveys, tree risk assessments, and planning-stage arboricultural advice. Directly comparable to SJA Trees in service mix, customer base (developers and LPAs), and geographic focus on southern England.
- Lockhart Garratt: Mid-sized UK arboricultural consultancy providing tree surveys, arboricultural impact assessments, and tree management plans to housebuilders, architects, and local authorities. Closely matches SJA Trees' service portfolio and client segments.
- Treework Environmental Practice: Long-established UK arboricultural consultancy offering BS5837 surveys, tree condition surveys, expert witness work, and woodland management. Comparable in longevity, geographic spread across southern England, and developer-focused service mix.
Others
- Arboricultural Association (Consultancy Directory members): The UK Arboricultural Association maintains a register of approved consultants (AA Registered Consultants) — the same credential held by SJA Trees' senior staff. Member firms in southern England (e.g., Hayden's, Collington Winter, Acer Forestry) are direct competitors drawn from this directory.
Market position
Strengths5 records
Weaknesses5 records
Competitive moat3 records
Key risks5 records
Key highlights6 records
Customer concentration
SJA Trees financial estimates
Financial estimateRevenue estimate
Valuation estimate
SJA Trees leadership team
Management profileNumber of profiles
Profiles7 records
SJA Trees funding detail
Funding detailFunding overview
Funding rounds
Investors
Funding detail is available on the Subscription and Enterprise plan.Contact sales →
SJA Trees M&A and investment
M&A and investmentM&A
Investments
M&A and investment is available on the Subscription and Enterprise plan.Contact sales →
Frequently asked questions about SJA Trees
What does SJA Trees do?
SJA Trees is an arboricultural planning consultancy that advises on the retention, integration, protection, and risk management of trees in relation to planning, development, and construction projects. Its services span BS5837 tree surveys, tree constraints plans, arboricultural impact assessments, planning application support, on-site tree protection supervision, expert witness work at Public Inquiries, Tree Preservation Order applications, ancient woodland management, and subsidence/damage analysis, delivered to developers, housebuilders, architects, local planning authorities, and private estate owners across London and the South-East.
Is SJA Trees a public or private company?
SJA Trees is a private company. It is classified as founder individual operated bootstrapped and is currently operating.
When was SJA Trees founded?
SJA Trees was founded in 1995. It employs 1 to 10 people.
Where is SJA Trees based?
SJA Trees is headquartered in Tadworth, United Kingdom, in the Europe region.
How does SJA Trees make money?
One revenue line is on record: professional Consultancy Services.
Who are SJA Trees's main competitors?
Emerging players on record are Aspect Ecology, Tyler Grange and Greengage Environmental. Broad incumbents are FPCR Environment and Design, EDP (Environmental Design Partnership) and Stantec (incorporating Barton Willmore). Direct peers are Barton Hyett Associates, Lockhart Garratt and Treework Environmental Practice. Arboricultural Association (Consultancy Directory members) is listed as an others.
Does SJA Trees have an API?
No public API is recorded for SJA Trees.
What industry is SJA Trees in?
SJA Trees's product category is Arboricultural Consulting Services. Its primary akta.pro industry code is HSAIADAJ, Arborist Consulting, Tree Risk Assessments & Appraisals, with a secondary code of HSAIADAL, Tree Preservation & Construction Site Tree Protection. Its NAICS code is 541320 and its SIC code is 8700.