PlanScope Blog – Page 172
Practical guides to UK planning applications: which reports your council expects, permitted development, constraints, costs and how to prepare each document.
Articles – page 172
9333 articlesReceptor identification in an air quality assessment
A location only counts as a receptor where public exposure matches the averaging period of the objective. Here is how to build, justify and present a receptor schedule that survives review by environmental health.
Statutory undertakers and their planning powers
Statutory undertaker rights under the GPDO 2015 turn on the operational land test in section 263 of the 1990 Act. Here is who qualifies, which parts of Schedule 2 apply, and where an application is still required.
Reports needed for a garage conversion to a habitable room
Garage conversions rarely need specialist reports. What they do need is a check on the original estate permission for conditions removing permitted development rights, and a measured parking case if permission is required.
Climate change allowances in a drainage strategy
Peak rainfall intensity allowances size drainage; peak river flow allowances model flood levels. How to choose the epoch, when to use the upper end figure, how urban creep compounds and what to do when the guidance is reissued.
Irreplaceable habitat and the tests that follow
Irreplaceable habitat covers ancient woodland, ancient and veteran trees and several other types. How to identify them on a site, what buffers are expected, and why avoidance is the only workable strategy on most schemes.
Ransom strips and the access they control
A ransom strip is land whose only value is that somebody else needs it. How strips arise, why permission can still be granted, the limits of Grampian conditions and the title checks that find them early.
The sequential test for a change of use application
National guidance exempts most change of use applications from the sequential test. What matters instead is whether the vulnerability classification of the use rises, which decides whether the exception test applies.
Dark sky designations and lighting in the application
Dark sky recognition and local plan policy both shape how lighting is assessed on rural sites. Zero upward light, warm colour temperature, curfews, and the glazing spill issue that catches barn conversions.
Groundwater control for a basement below the water table
A basement below the water table has to resist uplift, be dewatered without damaging neighbours and permanently displace groundwater flow. What the assessment needs to establish, consent and monitor.
Ordinary watercourse consent for farm ditches and outfalls
Culverting a ditch, installing an outfall or building a weir on an ordinary watercourse needs consent under section 23 of the Land Drainage Act 1991. Who grants it, what the application contains and how it sits alongside planning permission.
A material operation or lawful implementation of a permission
Beginning development under section 56 and lawfully implementing a permission are different tests. The statutory list of material operations, the Whitley principle and the records that prove a start years later.
Chargeable development under the levy
Chargeable development is the development the permission allows, charged on net additional gross internal area. The measurement rules, the six month in-use test and the notices that decide whether an exemption survives.
Retrofitting SuDS on a constrained urban site
Brownfield drainage retrofit starts from the evidenced existing discharge rather than a greenfield rate. Disconnection before storage, options where there is no open ground, and how to write up a solution that falls short of greenfield.
Safeguarded land in a local plan and what it means
Safeguarded land is reserved for development needs beyond the current plan period. It is not Green Belt and not an allocation, which changes both the policy test and the route to permission.
Sequencing a basement excavation in a terraced street
A basement under a terraced house is judged on method as much as design. The bay sequence, spoil arithmetic, highway licences, working hours and the monitoring regime that protects the houses either side.
Soil resource plans and topsoil handling on rural sites
A soil resource plan sets out how soil will be stripped, stored and reinstated without destroying its structure. Horizon separation, the moisture working window, stockpile limits and the verification record a condition discharge relies on.
Levy payment or a section 106 contribution for the same works
The Community Infrastructure Levy is a formula and is not negotiable. A planning obligation has to pass the three tests in regulation 122. Where both can lawfully be sought, and what replaced infrastructure lists and the pooling restriction in 2019.
Residual risk and safe access in a flood risk assessment
Residual risk and safe access are assessed separately from flood probability. How dry access differs from safe access, what the depth and velocity judgement involves, and how to write the section so it can be conditioned.
Interception in a sustainable drainage design
Interception is the retention of the first few millimetres of rainfall so that small events produce no discharge. It is assessed separately from attenuation, delivered only by source control, and frequently claimed without evidence.
Irreplaceable habitats and the biodiversity gain exception
Ancient woodland, veteran trees, blanket bog and other irreplaceable habitats sit outside the statutory biodiversity metric. The gain plan needs bespoke compensation agreed with the authority, and national policy still demands reasons of the highest order.
Pumped surface water drainage: when it is accepted
Lead local flood authorities accept pumped surface water systems only where gravity discharge cannot be achieved, and they want the levels that prove it. What the design has to include and how to justify it in the drainage strategy.
Waterway consultation and works affecting a canal
The waterway authority owns the channel, banks and towpath, so canalside development needs its consent as landowner and a separate works consent alongside planning permission. Discharge, moorings, heritage and programme all follow from that.
Care home layouts and progressive horizontal evacuation
Progressive horizontal evacuation moves residents sideways into an adjoining fire compartment rather than out of the building. That decision sets compartment lines, corridor widths and bedroom numbers, so it belongs in the layout from the first sketch.
Holiday letting a converted barn and the use class question
There is no use class for holiday accommodation, and a Class Q conversion is tied to a dwellinghouse in Class C3. How the material change of use question is judged, what occupancy conditions require and how to vary one.
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