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W W W. M A I N E B I Z . B I Z 25 J U LY 2 7 , 2 0 2 6 F O C U S R E A L E S TAT E / C O N S T R U C T I O N / E N G I N E E R I N G 1 Maine-based engineers and employees; firm-wide revenue, which can be derived from offices outside of Maine and additional business lines. 2 From 2025 survey 3 2024 revenue 4 Also environment, health, and safety (EHS) and occupational health and safety (OHS) management 5 In January 2026, acquired the geospatial services division of the James W. Sewall Co. in Bangor 6 Principals include Stevanie Demko, Robbie Tillotson, Matthew Albert, Peter Dunn, Scott Hughes, Sarah Smith, Allison DiMatteo and Tyler Barter. 7 Formerly Gorrill Palmer Consulting Engineers Inc. N O T E : Portland's WSP USA Environment & Infrastructure Inc. did not respond to the survey by press time. N/A = not available. S O U R C E : Each firm via survey. Maine' s largest engineering fir ms Rank ed b y n umber of Maine eng ineers , then Maine emplo y ees Areas of engineering F ir m Maine licensed engineer s/ Maine emplo yees/ 2025 total re venue 1 Chemical Electrical Civil En vironmental Geotechnical Mechanical Str uctural W aste w ater Other ser vices Principal(s) year founded 1 Stantec Consulting Ser vices Inc. 2211 Congress St., Suite 380, P or tland 04102 883-3355 • stantec.com 60 149 N/A A viation, urban planning , landscape architecture Gord Johnston president & CEO 1929 2 Wright-Pierce 11 Bowdoin Mill Island, T opsham 04086 725-8721 • wright-pierce.com 56 2 126 2 $ 72,700,000 3 Drinking w ater , transpor tation infrastr ucture P aul Bir k el president & CEO 1947 3 W oodard & Cur ran Inc. 12 Mountfor t St., P or tland 04101 800-426-4262 • woodardcur ran.com 44 174 $ 378,499,955 Contract operations Alyson W atson CEO 1979 4 VHB 500 Southborough Drive, Suite 105B, South P or tland 04106 889-3150 • vhb.com 30 94 $ 22,300,000 En vironmental & transpor tation planning , per mitting , regulator y compliance, h ydraulics, sur ve ying uction inspection Tim Br y ant managing director , Maine 1979 5 HNTB Cor p. 82 Running Hill Road, South P or tland 04106 774-5155 • hntb.com 26 58 $ 15,000,000 Urban, municipal and en vironmental planning , program management, constr uction ser vices, architecture, tolling , advisor y , transit and rail Matthe w Hear n leader , Nor ther n Ne w England 1914 6 Se vee & Maher Engineer s Inc. 4 Blanchard Road, Cumber land 04021 829-5016 • sme-engineer s.com 25 94 $ 26,000,000 Site in industrial h ygiene & indoor air quality , utility ser vices, w ater resources, sur ve y 4 Erik Clapp president Dan vice president 1985 7 Sebago T echnics 75 John Rober ts Road, Suite 4A, South P or tland 04106 200-2100 • sebagotechnics.com 24 135 $ 18,900,000 T ranspor ve ying , landscape architecture, 3D modeling & scanning , en vironmental sciences and per mitting Mar k Adams CEO K ylie Mason president & COO 1981 8 Kleinschmidt Associates 141 Main St., 04967 487-3328 • kleinschmidtgroup.com 23 61 N/A Regulator y and en vironmental consulting ser vices to energ y companies and go ver nment agencies Tim Oak es CEO 1966 9 Thor nton T omasetti Inc. 14 Y or k St., P or tland 04101 245-6060 • thor ntontomasetti.com 23 50 $ 430,000,000 Sustainable strategies, rene w al & forensics consulting , protective design, historic preser vation, par king str ucture design, mass timber , resilience Ethan Rhile associate principal 1949 10 T .Y . Lin Inter national Nor thbrook Drive, F almouth 04105 781-4721 • tylin.com 20 45 N/A Planning and constr uction management Matthe w Cummings president 1954 11 Hale y W ard Inc. 5 One Merchants Plaza, Suite 701, Bangor 04401 989-4824 • hale yw ard.com 18 123 $ 53,310,000 Architecture, planning , interior design, industrial h ygiene, en vironmental compliance, natural resources, sur ve ying Denis St. P eter president & CEO T ra vis No yes COO 1978 12 SMRT Architects & Engineer s 75 W ashington A ve., P or tland 04101 877-700-7678 • smr tinc.com 16 91 $ 34,589,109 Architecture, commissioning , interior design, site design, sustainable design Bradle y Hodges president 1884 13 Oak P oint Associates 231 Main St., Biddeford 04005 283-0193 • oakpoint.com 15 64 $ 22,200,000 F ire protection engineering , architecture, interior design, landscape architecture Rober t Tillotson 6 president 1979 14 LJB Engineering 7 300 Southborough Drive, Suite 200, South P or tland 04106 772-2515 • ljbinc.com 15 39 $ 83,700,000 Safety engineering , fall protection, GIS ser vices Don Ettinger leader , Maine transpor tation operations Will Hask ell leader , Maine municipal operations 1998 15 WBRC Inc. 44 Central St., Bangor 04401 947-4511 • wbrcinc.com 14 55 $ 16,960,000 Planning , architecture, interior design, landscape architecture Ra y Bolduc president & CEO 1902 16 Har riman 46 Har riman Drive, Aubur n 04210 784-5100 • har riman.com 13 55 $ 15,800,000 Architecture, interior design, master planning Mar k Lee CEO 1870 17 Acor n Engineering Inc. 16 Middle St., P or tland 04101 775-2655 • acor n-engineering .com 13 40 N/A Landscape architecture, sur ve ying , w ater resources, sustainable design, third-par ty ser vices, municipal consulting , constr uction administration Will Sa vage president Sam Lebel vice president 2007 m via sur ve y . Note: P or tland's WSP USA En vironment & Infrastr ucture Inc. did not respond to the sur ve y b y press time. N/A = not a vailable. 1 Maine-based engineer s and emplo m-wide re of Maine and additional business lines. 2 F rom 2025 sur ve y 3 2024 re venue 4 Also en vironment, health, and safety (EHS) and occupational health and safety (OHS) management 5 In Januar y 2026, acquired the geospatial ser vices division of the James W . Se w all Co. in Bangor 6 Principals include Ste vanie Demk o, Robbie Tillotson, Matthe w Alber t, P eter Dunn, Scott Hughes, Sarah Smith, Allison DiMatteo and T yler Bar ter . 7 F or mer ly Gor rill P almer Consulting Engineer s Inc. - This list w as compiled b y Stephanie R. Meagher and published in the July 27, 2026, issue of Mainebiz. 5 HNTB Cor p. 82 Running Hill Road, South P or tland 04106 774-5155 • hntb.com 26 58 $ 15,000,000 Urban, municipal and en vironmental planning , program management, constr uction ser vices, architecture, tolling , advisor y , transit and rail leader , Nor ther n Ne w England 1914 6 Se vee & Maher Engineer s Inc. 4 Blanchard Road, Cumber land 04021 829-5016 • sme-engineer s.com 25 94 $ 26,000,000 Site in industrial h ygiene & indoor air quality , utility ser vices, w ater resources, sur ve y 4 Erik Clapp president Dan vice president 1985 7 Sebago T echnics 75 John Rober ts Road, Suite 4A, South P or tland 04106 200-2100 • sebagotechnics.com 24 135 $ 18,900,000 T ranspor ve ying , landscape architecture, 3D modeling & scanning , en vironmental sciences and per mitting Mar k Adams CEO K ylie Mason president & COO 1981 8 Kleinschmidt Associates 141 Main St., 04967 487-3328 • kleinschmidtgroup.com 23 61 N/A Regulator y and en vironmental consulting ser vices to energ y companies and go ver nment agencies Tim Oak es CEO 1966 9 Thor nton T omasetti Inc. 14 Y or k St., P or tland 04101 245-6060 • thor ntontomasetti.com 23 50 $ 430,000,000 Sustainable strategies, rene w al & forensics consulting , protective design, historic preser vation, par king str ucture design, mass timber , resilience Ethan Rhile associate principal 1949 10 T .Y . Lin Inter national Nor thbrook Drive, F almouth 04105 781-4721 • tylin.com 20 45 N/A Planning and constr uction management Matthe w Cummings president 1954 11 Hale y W ard Inc. 5 One Merchants Plaza, Suite 701, Bangor 04401 989-4824 • hale yw ard.com 18 123 $ 53,310,000 Architecture, planning , interior design, industrial h ygiene, en vironmental compliance, natural resources, sur ve ying Denis St. P eter president & CEO T ra vis No yes COO 1978 12 SMRT Architects & Engineer s 75 W ashington A ve., P or tland 04101 877-700-7678 • smr tinc.com 16 91 $ 34,589,109 Architecture, commissioning , interior design, site design, sustainable design Bradle y Hodges president 1884 13 Oak P oint Associates 231 Main St., Biddeford 04005 283-0193 • oakpoint.com 15 64 $ 22,200,000 F ire protection engineering , architecture, interior design, landscape architecture Rober t Tillotson 6 president 1979 14 LJB Engineering 7 300 Southborough Drive, Suite 200, South P or tland 04106 772-2515 • ljbinc.com 15 39 $ 83,700,000 Safety engineering , fall protection, GIS ser vices Don Ettinger leader , Maine transpor tation operations Will Hask ell leader , Maine municipal operations 1998 15 WBRC Inc. 44 Central St., Bangor 04401 947-4511 • wbrcinc.com 14 55 $ 16,960,000 Planning , architecture, interior design, landscape architecture Ra y Bolduc president & CEO 1902 16 Har riman 46 Har riman Drive, Aubur n 04210 784-5100 • har riman.com 13 55 $ 15,800,000 Architecture, interior design, master planning Mar k Lee CEO 1870 17 Acor n Engineering Inc. 16 Middle St., P or tland 04101 775-2655 • acor n-engineering .com 13 40 N/A Landscape architecture, sur ve ying , w ater resources, sustainable design, third-par ty ser vices, municipal consulting , constr uction administration Will Sa vage president Sam Lebel vice president 2007 m via sur ve y . Note: P or tland's WSP USA En vironment & Infrastr ucture Inc. did not respond to the sur ve y b y press time. N/A = not a vailable. 1 Maine-based engineer s and emplo m-wide re of Maine and additional business lines. 2 F rom 2025 sur ve y 3 2024 re venue 4 Also en vironment, health, and safety (EHS) and occupational health and safety (OHS) management 5 In Januar y 2026, acquired the geospatial ser vices division of the James W . Se w all Co. in Bangor 6 Principals include Ste vanie Demk o, Robbie Tillotson, Matthe w Alber t, P eter Dunn, Scott Hughes, Sarah Smith, Allison DiMatteo and T yler Bar ter . 7 F or mer ly Gor rill P almer Consulting Engineer s Inc. - This list w as compiled b y Stephanie R. Meagher and published in the July 27, 2026, issue of Mainebiz. 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