Airspace Surveyor in Bromley

An airspace development adds new homes by building above an existing roof. In Bromley, the work splits between rooftop schemes on the borough’s mansion blocks and post-war estates and upward extensions on the extensive 1930s semis across the suburban heartland. Our role covers the existing residents below the development, the schedules of condition that record each flat before construction starts, and the day-to-day liaison through the build.

Rooftop Extensions Across Bromley

Bromley covers the largest geographic area of any London borough, with residential stock running from suburban semis through to Victorian terraces and post-war estates. The 1930s semis and Edwardian housing dominate across Beckenham, Petts Wood, West Wickham, Hayes, and the Bromley town fringes, where upward extensions on individual homes are the most common airspace work. Mansion blocks and post-war estates concentrate around Bromley town centre, Penge, and Crystal Palace, where mid-rise residential blocks suit rooftop schemes. Outer parts of the borough through Biggin Hill and Chislehurst carry more detached housing and conservation area protection.

We specialise in chartered surveying on dense urban sites where rooftop and upward extension schemes are most common. The practice is RICS regulated with over 30 years of combined residential extension and rooftop experience. Airspace development advice covers feasibility and the planning route before any application is prepared.

Airspace Developments

As well as providing daylight, sunlight and rights of light advice, our role would be to make contact with the occupants of the existing building to establish any concerns regarding the development. We will work closely with the professional team to identify the initial questions and look at how these can be addressed.

It is our experience that maintaining the same point of contact for the duration of the project offers the existing occupants’ reassurance and continuity.

Services Provided

  • Make initial contact with existing occupants.

  • Attend meetings to discuss any concerns of the existing occupants.

  • Recording Schedules of Condition of the flats below the proposed units.

  • Act as a liaison between the developer and occupants throughout the project.

  • Assist in resolving any issues that may arise such as car parking, site setup etc.

What is involved in an airspace project in Bromley?

Project type drives the scope. On homeowner-led upward extensions across Bromley's 1930s semis and Edwardian terraces, the focus is on the Party Wall etc. Act 1996, neighbour relations, and protection of the existing structure during construction. Many semi-detached and detached properties qualify for prior approval extensions under permitted development, which changes the planning route but not the party wall obligations.

On rooftop additions to mansion blocks and post-war estates around Bromley town centre and Penge, the existing occupants liaison role becomes central. We make initial contact with each leaseholder below the proposed units, prepare Schedules of Condition for the flats directly below, and act as the named point of contact through construction. Daylight and sunlight reports typically accompany the planning submission given the impact of new height on neighbouring properties.

Airspace work in Bromley typically sits alongside daylight and sunlight, rights of light, and party wall workstreams on the same scheme. The same surveyor stays on the project from instruction to handover.

Over the past four years, CHP have worked very successfully with us in their capacity as party wall surveyors. Through his calm, sensible approach and excellent communication skills James Crowley, in particular, gained the trust and confidence of the entire team and stakeholders. Looking forward to working with CHP again.”

- Clare Goggin, Jackson Coles

What planning considerations apply to airspace schemes in Bromley?

The London Borough of Bromley reviews airspace proposals against design, height, neighbour amenity, parking, daylight and sunlight impact, and area character. The borough has substantial conservation areas across Beckenham, Chislehurst, Bickley, and parts of Petts Wood. Many central and outer sites are constrained by these heritage considerations before any other planning issue comes into play.

Where airspace work is feasible, the planning route depends on building type and proposed height. Many of Bromley's detached and semi-detached houses qualify for permitted development with prior approval, which avoids a full planning application. Rooftop additions to blocks of flats almost always need a full application. Rights of light assessments sit outside the planning process but often run in parallel where new height affects surrounding properties.

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Head Office
2-6 Boundary Row
London, SE1 8HP

Essex Office
2-6 Boundary Row
London, SE1 8HP


020 3714 4090

Get in touch.

Head Office
2-6 Boundary Row
London, SE1 8HP

Essex Office
2nd Floor, 10 High Street
Wickford, Essex
SS12 9AZ


020 3714 4090
enquiries@chpsurveyors.com