Tree Constraints Plan (TCP)
What is a Tree Constraints Plan?
A Tree Constraints Plan (TCP) is a crucial architectural design tool produced at the very beginning of the planning process. It acts as a visual guide, mapping out the exact constraints that existing trees place on a development site.
By identifying these constraints early, architects and developers can design site layouts that harmonise with retained trees. This proactive approach helps to avoid costly redesigns and planning refusals later in the development process.
Why Do You Need a TCP Early in Your Project?
The most common mistake in development is designing a layout before fully understanding the site's arboricultural constraints. A TCP clearly defines the developable space by highlighting critical factors such as Root Protection Areas and canopy spreads.
Having this vital information upfront allows your design team to maximise the site's potential while ensuring full compliance with British Standard 5837:2012, smoothing the path to planning approval.
What is Included in a Tree Constraints Plan?
Our Tree Constraints Plans are meticulously drafted using AutoCAD to provide exact spatial data for your design team. The plan typically features:
- Accurate Tree Plotting Precise mapping of all significant trees located on and immediately adjacent to the site boundaries.
- Root Protection Areas (RPAs) Clear visual representation of the below-ground constraints where construction must generally be avoided or specially engineered.
- Tree Categorisation Colour-coded grading (A, B, C, U) applied to each tree to instantly highlight which specimens should be prioritised for retention and which can be safely removed.
- Canopy Spread & Shading Clear indications of current and future branch spread, alongside potential shading issues that could impact the design of habitable rooms and garden spaces.
Frequently Asked Questions
Here are answers to some common questions we receive regarding Tree Constraints Plans.
What is the difference between a TCP and a TPP?
A TCP (Tree Constraints Plan) shows the structural and spatial constraints trees pose to inform your initial design. A TPP (Tree Protection Plan) is produced later in the process to demonstrate exactly how retained trees will be physically protected during the construction phase.
Can I build within a Root Protection Area shown on a TCP?
While generally discouraged by planning authorities, it is sometimes possible to build within an RPA using specialist techniques such as pile and beam foundations or cellular confinement systems. The TCP highlights exactly where these engineering solutions will be required.
When is the best time to commission a TCP?
The TCP should ideally be commissioned immediately after you receive your initial topographical survey and before any site layouts or architectural designs are drawn. This saves significant time and money by preventing layout redesigns.
Do I need a Tree Constraints Report to accompany the plan?
Yes. The TCP is usually supplied alongside a Tree Constraints Report (TCR), which provides the detailed survey data, measurements, and formal categorisation for each individual tree plotted on the plan.
Let's discuss your project
Contact Canopy IQ today for intelligent tree solutions and expert arboricultural advice across Kent, East London, South East London, and beyond.
Whether you need a Tree Constraints Plan for a new site, or expert advice on managing your trees, our experienced team is here to help.