Basic Biographical Details

Name: Thomas McGill Cassels
Designation: Architect
Born: 1869
Died: After 1945
Bio Notes: Thomas McGill Cassels was born in 1869 and articled to Allan Stevenson of 14 Cathcart Street, Ayr from 1885 to 1890, studying at Ayr Academy. On completing his apprenticeship he moved to Glasgow to work as an architectural and perspective draughtsman in the office of civil engineer Charles C Lindsay, leaving him the following year to become principal assistant to Peter Macgregor Chalmers. He remained in Chalmers' office for four years, and attended classes at Glasgow School of Art and the Glasgow and West of Scotland Technical College throughout his period in Glasgow.

Cassels returned to Allan Stevenson's office first as managing assistant from 1895 and later as partner. He was elected LRIBA in the mass intake of 20 July 1911, proposed by John Bennie Wilson and the Glasgow Institute of Architects.

The practice did not become Allan Stevenson & Cassels until c. 1923, an event which probably marked Stevenson's death or retirement at what must have been a fairly advanced age.

In April 1927 Cassels merged the practice with that of Alexander Mair, a former apprentice of Stevenson's - the practice name now becoming Allan Stevenson, Mair & Cassels - but Mair demerged his clientele in 1929, probably because he had received the major commission for Ayr County Buildings and was now attracting much more business than Cassels, particularly from dairies. Cassels thereafter continued the practice alone, reverting its name to Allan Stevenson & Cassels, until 1945 when it was taken over by Duncan McCulloch. He took ____ Wilson into partnership in the following year. It was later taken over by E A Darley, who formed the Darley Hay partnership. The Darley Hay archive was transferred to Ayrshire Archives in 2007 after the Darley Hay firm merged with Carricks to become Carricks Darley Hay.

Private and Business Addresses

The following private or business addresses are associated with this architect:
 AddressTypeDate fromDate toNotes
Item 1 of 314, Cathcart Street, Ayr, Ayrshire, ScotlandBusiness1911 *1931with Allan Stevenson
Item 2 of 3Auchrossan/46, St Leonards Roadq, Ayr, Ayrshire, ScotlandPrivateBefore 1911After 1914 
Item 3 of 346, Sandgate, Ayr, Ayrshire, ScotlandBusiness1939 *  

* earliest date known from documented sources.

Employment and Training


The following individuals or organisations employed or trained this architect (click on an item to view details):
 NameDate fromDate toPositionNotes
Item 1 of 8Allan Stevenson18851890Apprentice 
Item 2 of 8Charles C Lindsay18901891Draughtsman 
Item 3 of 8Peter Macgregor Chalmers18911895Principal Assistant 
Item 4 of 8Allan Stevenson1895Before 1922Managing AssistantPresumably promoted within this period
Item 5 of 8Allan StevensonBefore 1922c. 1922PartnerCassels is believed to have become a partner some time before the firm changed its name to include his
Item 6 of 8Allan Stevenson & Casselsc. 1922April 1927Partner 
Item 7 of 8Allan Stevenson, Mair & CasselsApril 19271 August 1929Partner 
Item 8 of 8Allan Stevenson & Cassels1 August 19291945Partner 


RIBA Proposers

The following individuals proposed this architect for RIBA membership (click on an item to view details):
 NameDate proposedNotes
Item 1 of 1John Bennie Wilson20 July 1911for Licentiateship - as President of the Glasgow Institute of Architects

Buildings and Designs

This architect was involved with the following buildings or structures from the date specified (click on an item to view details):
 Date startedBuilding nameTown, district or villageIslandCity or countyCountryNotes
Item 1 of 172 House, James StreetTarbolton AyrshireScotlandAdditions and alterations - date not known
Item 2 of 172 Mole Cottage, JoppaCoylton AyrshireScotlandAdditions and alterations - date not known
Item 3 of 172 Western HouseAyr AyrshireScotlandContribution unclear (Michael C Davis writes that the practice 'seems to have been involved in the project in some way)
Item 4 of 1721890Competition designs for proposed bridge over the River Clyde   ScotlandAs draughtsman to Charles C Lindsay
Item 5 of 1721890Competition designs for proposed theatre and assembly rooms  SingaporeSingaporeAs draughtsman to Charles C Lindsay
Item 6 of 1721895Dankeith HouseDundonald (near) AyrshireScotlandAdditions and alterations? - as managing assistant to Allan Stevenson
Item 7 of 1721896Ayr Parish Church HallsAyr AyrshireScotlandAs managing assistant to Allan Stevenson
Item 8 of 1721897Ayrshire Lunatic AsylumAyr AyrshireScotlandDrains, extensions and new villas - as managing assistant to Allan Stevenson
Item 9 of 1721898Cumnock Fever HospitalCumnock AyrshireScotlandAs managing assistant to Allan Stevenson
Item 10 of 1721899Irvine Golf Club, BogsideAyr AyrshireScotlandClub House - as managing assistant to Allan Stevenson
Item 11 of 1721900Robertson Memorial ChurchAyr/Wallacetown AyrshireScotlandas managing assistant to Allan Stevenson
Item 12 of 1721900Southannan HouseWest Kilbride (near) AyrshireScotlandAdditions and alterations to house - as managing assistant to Allan Stevenson
Item 13 of 1721902Fergushill SchoolKilwinning AyrshireScotlandAdditions and alterations - as managing assistant to Allan Stevenson
Item 14 of 1721902Lady Bute's HospitalCumnock AyrshireScotlandAdditions - as managing assistant to Allan Stevenson
Item 15 of 1721903Dairy SchoolKilmarnock AyrshireScotlandAs managing assistant to Allan Stevenson
Item 16 of 1721903Kilmarnock Sheriff CourtKilmarnock AyrshireScotlandAdditions and alterations - as managing assistant to Allan Stevenson
Item 17 of 1721904County Buildings and Sheriff CourtAyr AyrshireScotlandAlterations, additions and remodelling - as assistant to Allan Stevenson
Item 18 of 1721904Montgomerie HouseTarbolton (near) AyrshireScotlandMinor additions - as managing assistant to Allan Stevenson
Item 19 of 1721905Glen Afton SanatoriumNew Cumnock AyrshireScotlandActed as site architect - as managing assistant to Allan Stevenson
Item 20 of 1721906RC SchoolCumnock AyrshireScotlandAs managing assistant to Allan Stevenson
Item 21 of 1721907Ayr Racecourse and GrandstandsWallacetown AyrshireScotlandAs managing assistant to Allan Stevenson
Item 22 of 1721907CreameryKirkmichael AyrshireScotlandAs managing assistant to Allan Stevenson
Item 23 of 1721908HouseWemyss Bay RenfrewshireScotlandAdditions and alterations to Hydropathic, after conversion from house - plans dated
Item 24 of 1721908Knockdolian HouseColmonell (near) AyrshireScotlandAdditions - as managing assistant to Allan Stevenson
Item 25 of 1721908Loch Ericht HotelDalwhinnie Inverness-shireScotlandAdditions - as managing assistant to Allan Stevenson
Item 26 of 1721909Mitchells Bacon Factory and Offices, Garden StreetAyr AyrshireScotlandAdditions and alterations to factory - as managing assistant to Allan Stevenson
Item 27 of 1721910Castlehill, plan showing straightening of road near Castlehill StablesAyr AyrshireScotlandAs managing assistant to Allan Stevenson
Item 28 of 1721910Hourstons Drapery WarehouseAyr AyrshireScotlandFurther work - as managing assistant to Allan Stevenson
Item 29 of 1721910Parish Church Hall (or Halls?)Colmonell AyrshireScotlandAs managing assistant to Allan Stevenson
Item 30 of 1721911Feuing plans and new roads, KingcasePrestwick AyrshireScotlandPlans dated
Item 31 of 1721911Stair SchoolStair AyrshireScotlandRemodelling and extension - as managing assistant to Allan Stevenson
Item 32 of 1721920Ayr War MemorialAyr AyrshireScotlandUnsuccessful competition entry
Item 33 of 1721922Cottages for John Toll and Daniel BrakenridgeAyr AyrshireScotland 
Item 34 of 1721923Double house for F H MacphersonAyr AyrshireScotland 
Item 35 of 1721923Sewers at SouthannanFairlie AyrshireScotlandPlans dated
Item 36 of 172192440-44 High StreetAyr AyrshireScotland 
Item 37 of 1721924Ayrshire Sanatorium  AyrshireScotlandAlterations and additions
Item 38 of 1721924Brick housesCronberry AyrshireScotland 
Item 39 of 1721924Hall at AnnbankAnnbank AyrshireScotland 
Item 40 of 1721924Kingsbridge & Salcombe District Cottage Hospital  DevonEnglandBegun by Cassels alone; completed in partnership with Mair
Item 41 of 1721924Knockrivoch Farm  AyrshireScotlandAdditions and alterations - plans dated
Item 42 of 1721924Mossblown and Drumley Community CentreMossblown AyrshireScotland 
Item 43 of 1721925Blacklands  AyrshireScotlandPlan of grounds
Item 44 of 1721925Bungalow for James SmithAyr AyrshireScotland 
Item 45 of 1721925Bungalow for John Boyd, KingcasePrestwick AyrshireScotlandPlans dated
Item 46 of 1721925Bungalows for R W HillPrestwick AyrshireScotlandPlans dated
Item 47 of 1721925Burnton Farm, 44 Houses for Dalmellington Iron CompanyDalmellington AyrshireScotland 
Item 48 of 1721925Double Villa for William Govan & SonsPrestwick AyrshireScotlandPlans dated
Item 49 of 1721925Drumdone Estate  AyrshireScotlandPlans - unclear whether by Mair or Cassels
Item 50 of 1721925Enterkine Estate, Milton MillStair (near) AyrshireScotlandPlan of ground
Item 51 of 1721925Galloway CreameryStranraer WigtownshireScotlandManager's house - plans dated
Item 52 of 1721925Hall, The GlebeBallantrae AyrshireScotland 
Item 53 of 1721925Kirkmichael House  AyrshireScotlandAdditions to house - plans dated
Item 54 of 1721925Mid Moncur, plan of ground  AyrshireScotlandPlans dated
Item 55 of 1721925Mr Andrew Mitchell's ground, KingcasePrestwick AyrshireScotlandPlans dated
Item 56 of 1721926Brae of AuchendraneMaybole (near) AyrshireScotlandAdditions and alterations to 'Brae Farm'
Item 57 of 1721926Nethermains FarmNethermains AyrshireScotlandPlan of ground
Item 58 of 1721926Three-apartment flatted housesAyr AyrshireScotland 
Item 59 of 1721926Water supplyWest Drumsuie Ayrshire?ScotlandPlans dated
Item 60 of 1721926William Culley's propertyGirvan AyrshireScotlandDetails drawings
Item 61 of 1721927Bridgend CaféDalmellington AyrshireScotlandBilliard Saloon
Item 62 of 1721927Caldwell HouseUplawmoor RenfrewshireScotlandConversion to psychiatric hospital - alterations, additions and new garden wall
Item 63 of 172192817 Carrick StreetAyr AyrshireScotlandAlterations
Item 64 of 1721928Carrick Furniture HouseAyr AyrshireScotlandAdditions, alterations and new footpath
Item 65 of 1721928Enterkine EstateStair (near) AyrshireScotlandPlans
Item 66 of 1721928Loch Ericht HotelDalwhinnie Inverness-shireScotlandAdditions and alterations
Item 67 of 1721928Rozelle Estates, Bloomberry Farm  AyrshireScotlandAlterations
Item 68 of 172192942 Carrick StreetAyr AyrshireScotlandAlterations to fish restaurant
Item 69 of 17219296-10 Newmarket StreetAyr AyrshireScotlandAlterations to no 6
Item 70 of 1721929Chalmers Road, planAyr AyrshireScotland 
Item 71 of 1721929Double Cottage for John RamsayAyr AyrshireScotland 
Item 72 of 1721929Enterkine Estate, Pierhill, plan of groundsStair (near) AyrshireScotlandPlan of grounds
Item 73 of 172193026 Barns StreetAyr AyrshireScotlandAdditions and alterations
Item 74 of 1721930Housing at WhitelettsAyr AyrshireScotland 
Item 75 of 1721930Knockdon Estate, Glenhead SteadingDalrymple (near) AyrshireScotlandWater tanks - plans dated
Item 76 of 1721930Rozelle Estate, South Corton  AyrshireScotlandAdditions and alterations - plans dated
Item 77 of 1721930Rozelle HouseAyr AyrshireScotlandAlterations to house, lodges, and cottages at Home Farm
Item 78 of 1721930Shop for J & L FreemanAyr AyrshireScotland 
Item 79 of 172193150 Newmarket StreetAyr AyrshireScotlandAlterations and additions
Item 80 of 17219318 and 9 Hill StreetTarbolton AyrshireScotlandAdditions and alterations - plans dated
Item 81 of 1721931Carrick Furniture Warehouse, SunblindAyr AyrshireScotland 
Item 82 of 1721931Cold Storage Chambers, Mill StreetAyr AyrshireScotlandReconstruction
Item 83 of 1721931Cottage and shop for Mrs Fred MurdochAyr AyrshireScotland 
Item 84 of 1721931Helensburgh Cottage, JoppaCoylton AyrshireScotlandAdditions and alterations - plans dated
Item 85 of 1721931Knockdon Estate, cottagesDalrymple (near) AyrshireScotlandAlterations - plans dated
Item 86 of 1721931Knockdon Estate, Glenhead SteadingDalrymple (near) AyrshireScotlandAdditions, alterations and sheep shelter - plans dated
Item 87 of 1721931Knockdon Estate, houseDalrymple (near) AyrshireScotlandAdditions and alterations - plans dated
Item 88 of 1721931Orchard Cottage, JoppaCoylton AyrshireScotlandAdditions and alterations - plans dated
Item 89 of 1721932Carrick Furniture HouseAyr AyrshireScotland 
Item 90 of 1721932Carrick HouseGirvan AyrshireScotlandAdditions and alterations - plans dated
Item 91 of 1721932Ebenezer Gospel HallCrosshill AyrshireScotland 
Item 92 of 1721932Joppa CottageCoylton AyrshireScotlandAlterations
Item 93 of 1721932Mission HallCrosshill AyrshireScotland 
Item 94 of 1721932Properties of Alexander Lamb Esq, New Street and Kennedy's Close, CathcartstonDalmellington AyrshireScotlandAdditions and alterations
Item 95 of 1721932Roseview Cottage, JoppaCoylton AyrshireScotlandPlans dated
Item 96 of 172193311-15 Main StreetAyr AyrshireScotlandAdditions and alterations
Item 97 of 1721933? & 5 Ashgrove StreetAyr AyrshireScotlandAlterations
Item 98 of 1721933Blacksmith's cottageCulroy AyrshireScotlandAdditions and alterations
Item 99 of 1721933Bungalow for Miss MorrisonBogend-Symington AyrshireScotland 
Item 100 of 1721933Carrick Furniture HouseAyr AyrshireScotland 
Item 101 of 1721933Doonbank, feuing planAyr AyrshireScotland 
Item 102 of 1721933Feuing plans and new roads, KingcasePrestwick AyrshireScotlandPlans dated
Item 103 of 1721933Lochend FarmCoylton AyrshireScotlandNew byre
Item 104 of 1721933Shepherds' cottages, LochheadLoch Doon AyrshireScotlandPlans dated
Item 105 of 1721934Arcade CaféAyr AyrshireScotlandAlterations
Item 106 of 1721934Burnside Cottages, JoppaCoylton AyrshireScotlandAdditions and alterations - plans dated
Item 107 of 1721934Corsehill, CoilaCoylton AyrshireScotlandAdditions and alterations
Item 108 of 1721934Hillend Farm  AyrshireScotlandAdditions and alterations - plans dated
Item 109 of 1721934Property, Croft StreetDalmellington AyrshireScotlandAlterations
Item 110 of 1721934Rosebank CottageCoylton AyrshireScotlandAdditions and alterations
Item 111 of 1721934Seamill HydropathicSeamill AyrshireScotlandUnspecified work (plans dated) - uncertain whether for this or another Seamill building
Item 112 of 172193552-58 York Street LaneAyr AyrshireScotlandAdditions and alterations
Item 113 of 1721935Burnbrae CottageSundrum AyrshireScotlandAdditions and alterations
Item 114 of 1721935Coil Cottage, JoppaCoylton AyrshireScotlandAdditions and alterations - plans dated
Item 115 of 1721935Dunragit House  WigtownshireScotlandAlterations and additions
Item 116 of 1721935Knockdon Estate, Burnhouse SteadingDalrymple (near) AyrshireScotlandAdditions and alterations
Item 117 of 1721935Knockdon Estate, new house and garageDalrymple (near) AyrshireScotlandPlans dated
Item 118 of 1721935Milleraig FarmSundrum AyrshireScotlandAlterations - plans dated
Item 119 of 1721935Mr Reid's Trust feuingAyr AyrshireScotland 
Item 120 of 1721935Smithy HouseDrongan AyrshireScotlandAdditions and alterations - plans dated
Item 121 of 1721935Wallacetown North Church HallWallacetown AyrshireScotlandAlterations
Item 122 of 1721936233 High StreetAyr AyrshireScotlandAdditions and alterations
Item 123 of 1721936Bungalow for James DykesBarclaugh AyrshireScotland 
Item 124 of 1721936Bungalow for John Spence, LauriestonDundonald AyrshireScotlandPlans dated
Item 125 of 1721936Cottage, JoppaCoylton AyrshireScotlandAdditions and alterations - plans dated
Item 126 of 1721936CottagesDrongan AyrshireScotlandAdditions and alterations - plans dated
Item 127 of 1721936Cottages, JoppaCoylton AyrshireScotlandAdditions and alterations - plans dated
Item 128 of 1721936High Keirs, byresDrumgrange Estate AyrshireScotlandPlans dated
Item 129 of 1721936House at Pirnmill for David H ReidPirnmillArranButeScotlandPlans dated
Item 130 of 1721936House for John KelsoGatehouse of Fleet KirkcudbrightshireScotlandPlans dated
Item 131 of 1721936Laurel Cottage, JoppaCoylton AyrshireScotlandAdditions and alterations - plans dated
Item 132 of 1721936Low Keirs, FarmDrumgrange Estate AyrshireScotlandAdditions and alterations - plans dated
Item 133 of 1721936Proposed cottages for Mr John RossAyr AyrshireScotland 
Item 134 of 172193752-54 SandgateAyr AyrshireScotlandAlterations and additions
Item 135 of 1721937Auchenharvie, new byreStewarton AyrshireScotland 
Item 136 of 1721937Glenpark HotelAyr AyrshireScotlandAdditions
Item 137 of 1721937Knockdolian HouseColmonell (near) AyrshireScotlandDam across Knockdhu Burn on estate
Item 138 of 1721937Knockdon Estate, stable courtMinishant AyrshireScotland 
Item 139 of 1721937Laigh Grange Farm  AyrshireScotlandAdditions and alterations to cot-houses
Item 140 of 1721937Mansfield Estate, Waterside FarmNew Cumnock AyrshireScotlandAlterations to dairy offices and byre - plans dated
Item 141 of 1721937Mark FarmStranraer WigtownshireScotlandNew buildings - plans dated
Item 142 of 1721937Montgomerie Estate, Seamill feuingTarbolton (near)? AyrshireScotlandPlans date
Item 143 of 1721937Property for Dr InnanAyr AyrshireScotlandAdditions and alterations
Item 144 of 1721937Sceneryhill CottageRankinstone AyrshireScotlandAdditions and alterations - plans dated
Item 145 of 1721937The CottageFailford AyrshireScotlandAlterations - plans dated
Item 146 of 172193846-50 Titchfield StreetKilmarnock AyrshireScotlandAdditions and alterations - plans dated
Item 147 of 1721938Bungalow for Andrew WattAyr AyrshireScotland 
Item 148 of 1721938Bungalow for Mrs Boyd AndersonAyr AyrshireScotland 
Item 149 of 1721938Bungalow for Robert Connell, Kayshill-Trabboch  AyrshireScotlandPlans dated
Item 150 of 1721938Bungalow for Thomas KnoxDrongan AyrshireScotlandPlans dated
Item 151 of 1721938CarcloutPatna AyrshireScotlandAdditions and alterations
Item 152 of 1721938House for John RossAyr AyrshireScotland 
Item 153 of 1721938Offices for Ayrshire PostAyr AyrshireScotlandAdditions and alterations
Item 154 of 1721938Property at JoppaCoylton AyrshireScotlandAdditions and alterations - plans dated
Item 155 of 1721938Victoria Engineering WorksAyr? Ayrshire?Scotland 
Item 156 of 1721939Annbank FarmAnnbank AyrshireScotlandAlterations
Item 157 of 1721939Bungalow for Jack FreemanCraigwell AyrshireScotland 
Item 158 of 1721939Bungalow for John RossAyr AyrshireScotland 
Item 159 of 1721939Bungalow for John RossAyr AyrshireScotland 
Item 160 of 1721939Bungalow for Mrs Maria Somerville CarrieAyr AyrshireScotland 
Item 161 of 1721939Cottage for J J JohnstonLugar AyrshireScotlandPlans dated
Item 162 of 1721939High Grange FarmMaybole AyrshireScotlandCottage nearby - plans dated
Item 163 of 1721939New road, DoonbankAyr AyrshireScotland 
Item 164 of 1721939Warrix Farm, block of 3 four-apartment cottagesDreghorn AyrshireScotlandPlans dated
Item 165 of 1721940CottageStraiton AyrshireScotlandAdditions and alterations - plans dated
Item 166 of 1721940Farm Cottage, CrawfordstonAnnbank AyrshireScotland 
Item 167 of 1721940Fowlers Croft, new cottageStraiton AyrshireScotlandPlans dated
Item 168 of 1721940Merrick HallDalmellington AyrshireScotland 
Item 169 of 1721941Cottage, Dormieston-TrabbochDormieston/Trabboch AyrshireScotlandAlterations and additions - plans dated
Item 170 of 1721942Mount Ferguson Farm  AyrshireScotlandProposed cattle boxes - plans dated
Item 171 of 1721944Cattlemarket, new byre for James Craig LtdAyr AyrshireScotland 
Item 172 of 1721945Double Cottages for J HyslopMaybole AyrshireScotlandPlans dated


Bibliographic References

The following books contain references to this architect:
Item 1 of 3RIBA1930The RIBA Kalendar 1930-1931 London: Royal Institute of British Architects 
Item 2 of 3RIBA1939The RIBA Kalendar 1939-1940 London: Royal Institute of British Architects 
Item 3 of 3Who's Who in Architecture1914    

Archive References

The following archives hold material relating to this architect:
 SourceArchive NameSource Catalogue No.Notes
Item 1 of 2Professor David M Walker personal archiveProfessor David M Walker, notes and collection of archive material Information about Darley Hay archive from Rob Close
Item 2 of 2RIBA Archive, Victoria & Albert MuseumRIBA Nomination Papers L v16 no 1175