The following text is from the original listed building designation:
1. 5280 DUNTON GREEN DUNTON GREEN London Road (East Side) Broughton House TQ 55 NW 42/361 lO.9.54.
II*
2. Circa 1830 villa, 2 storeys, 5 windows. Yellow brick with parapet above stone cornice with flat modillions. Concealed slate roof. Moulded stone architraves and blind cases to sash windows with glazing bars, those on ground floor under pediments. Centre projecting stone porch with coupled Ionic columns, entablature with large flat modillions and balustrade above. Glazed double doors. Interior virtually unaltered, with marble fireplace surrounds, entablature to doors and cast iron staircase curving around well. Listing NGR: TQ5116458125 (1)

Description from record TQ 55 NW 45 :
(TQ 51175812) Broughton House (NAT) (2) 5280 DUNTON GREEN DUNTON GREEN London Road (East Side) Broughton House TQ 55 NW 42/361 10.9.54. II* 2. Circa 1830 villa, 2 storeys, 5 windows. Yellow brick with parapet above cornice with flat modillions. Concealed slate roof. Moulded stone architraves and blind cases to sash windows with glazing bars, those on ground floor under pediments. Centre projecting stone porch with coupled Ionic columns, entablature virtually unaltered, with marble fireplace surrounds, entablature to doors and cast iron staircase curving around well. TQ 5057 10/360 II 2. Circa 1830 1-storey building of pale brick. Pyramidal low pitched slated roof with central panelled brick stack and canted corners. Eaves soffit. All 4 sides recessed, tle front bowed with 1 window. Diagonal corner projections, defined by pilasters hold tiny round windows. Other windows small-paned sashes under gauged brick arches. Overhanging eaves rest on wood posts at sides. 6-panel door under elliptical gauged brick arch. (3) The remarkable one-storeyed lodge to Broughton House is opposite Dunton Green church. White brick, square pyramidal roof and central chimneystack. The plan however is not so simple. The side to the road is convex, the other side recessed between diagonal corner projections, that give the roof its chamfered corners. Broughton House itself, also of white brick, c.1830, is much less spirited. Five bays by three. Two storeys. Portland stone for the paired Ionic columns of the porch, the plain top cornice, and the window surrounds, the lower ones with prim triangular pediments. (4)

A heritage assessment was produced in 2014 "to accompany the Listed Building Consent and Planning Application for the alteration and extension to Broughton House, London Road, Sevenoaks, Kent, on the basis that the application site is a Grade II* Listed Building on theNational Heritage List for England (NHLE) (NHLE ref. 1253962) due to its special architectural and historic value.

It was advised that ‘The historic formal gardens and parkland should not be detrimentally affected by development’. " (5)

Historic England archive material: BF083488 Broughton House, London Road, Dunton Green

<1> English Heritage, List of Buildings of Special Architectural or Historic Interest (Map). SKE16160.

<2> OS 1:10000 1975 (OS Card Reference). SKE48160.

<3> DOE (HHR) Dist. of Sevenoaks R.D., Kent. Jan. 1975 95 (OS Card Reference). SKE40445.

<4> Bldgs of Eng W Kent and the Weald 1980 262-263 (J Newman) (OS Card Reference). SKE37981.

<5> AB Heritage, 2014, Broughton House, Sevenoaks, Kent Heritage Statement and Technical Memorandum (Unpublished document). SKE31732.