Our Team
Lessani is a Washington, D.C.–based construction management firm and a certified CBE and SBA HUBZone small business. We specialize in delivering construction management, program management, inspections, and project controls services that support complex capital projects from pre-construction through closeout. Our team works closely with owners, developers, and public agencies to ensure projects are delivered on time, within budget, and to the highest quality standards.
With deep local experience and a hands-on approach, Lessani has supported a range of vertical and horizontal infrastructure projects, including schools, commercial developments, transportation facilities, roadways, and civic buildings. Our integrated services also include construction management, structural engineering and energy consulting, allowing us to provide technically sound, efficient, and code-compliant solutions tailored to each project’s unique demands. At Lessani, we pride ourselves on being responsive, reliable, and committed to the long-term success of our clients and the communities we serve.


Yahya Aliabadi, PhD, PE
Yahya is a Structural Engineering authority with more than thirty years of hands-on experience delivering and managing design solutions for buildings, bridges, and industrial facilities. He combines doctoral-level research credentials with multi-state Professional Engineer licenses to provide code-compliant, performance-focused results for public and private sector clients .
His portfolio ranges from residential additions to DOT infrastructure and power-plant structures, covering new construction, complex renovations and alterations, and forensic investigations. Yahya provides full-service structural design, third-party reviews, special inspections, expert-witness testimony, and construction-administration support across the Washington, DC metro region .
Experience
Core Competenices
Structural Analysis & Design for Concrete, Steel, Masonry, and Timber
Third-Party Structural Plan Review & Special Inspections
Foundation & Retaining-Wall Engineering
Seismic, Wind, and Extreme-Event Load Evaluation
Expert Witness & Forensic Engineering
Design-Build, CM-at-Risk, and P3 Contract Support
Project Management, Scheduling, and Contract Negotiation
Code Compliance & Peer Review (IBC, ACI 318, AISC LRFD, AASHTO LRFD)
Advanced Structural Software: STAAD Pro, SAP, ETABS, ANSYS, RISA, Revit


Education
PhD Civil Engineering, Structures
MS Civil Engineering, Project Management
BS Civil & Structural Engineering
Certifications
Professional Engineer (PE), DC, Maryland, Virginia, Pennsylvania, New Jersey
John D’Adamo, CCM
John D’Adamo is a construction management executive with more than forty five years of experience across commercial, industrial, municipal, federal, and residential programs totaling more than seven billion dollars. He leads the full project lifecycle from early planning through turnover, establishing governance, controls, and risk management that keep scope, cost, schedule, and quality aligned.
His expertise includes budget development and control, procurement and contract administration, schedule management, cost estimating, design and engineering coordination, claims analysis, feasibility and development studies, project cost accounting, and quality assurance. He advises investors, banks, sureties, and owners, using a clear, data driven approach to deliver successful outcomes and resolve issues early.
Experience
Core Competenices
Capital planning, budget analysis, and cost control
Procurement strategy, contract negotiation, and administration
Critical path scheduling, forensic schedule analysis, and recovery planning
Cost estimating and value analysis
Design management and engineering coordination
Claims analysis and dispute resolution
Feasibility studies and development due diligence
Project accounting and performance reporting
Quality control and quality assurance
Client service and business development


Education
MBA, Management and Finance, Houston Baptist University
BS, Construction Engineering Technology, Spring Garden College
Certifications
Certified Construction Manager, CCM
Brianne Fischer, Esq
Brianne Fischer is a seasoned attorney and business advisor with over a decade of experience supporting small businesses, entrepreneurs, and local ventures in navigating legal, operational, and compliance challenges. As the founder of Fischer Consulting, she works directly with DC-area businesses to streamline contracts, structure operations, reduce risk, and ensure compliance with local and federal regulations.
Her legal career has included executive-level roles focused on managing operations, governance, and compliance in complex environments. Today, Brianne uses that experience to deliver clear, practical guidance to small business owners—from early-stage startups to established local enterprises—helping them grow confidently and sustainably.
Experience
Core Competenices
Retro-Commissioning and ASHRAE Level 2 Energy Audits
Energy Modeling and Mechanical-System Analysis
Utility DSM Program Management and Reporting
Commissioning Planning, Functional Testing, and Cx Reporting
Incentive and Rebate Facilitation with Owners and Contractors
Energy Conservation Measure Identification and Payback Analysis
Team Leadership and QA of Audit Deliverables


Education
MS Mechanical Engineering
BS Mechanical Engineering
Certifications
Licensed Attorney:
– Illinois (2013)
– District of Columbia (2016)
Payam Esmaili, CEM, PMP
Payam is an energy-efficiency specialist with eleven years of experience leading retro-commissioning, energy audits, and program management for commercial and multi-family buildings. His portfolio spans utility demand-side-management programs, ASHRAE Level 1-3 audits, detailed energy modeling, and mechanical-system diagnostics that drive measurable savings.
He has managed Potomac Edison’s Small Business Direct Install and Retro-Commissioning Program, guided small-business customers from opportunity identification through installation and verification . Previous roles with DCSEU, Lilker Energy Solutions, 3D Energy, and WSP have honed his ability to translate technical findings into incentive dollars and actionable upgrades .
Experience
Core Competenices
Small Business Formation & Structuring
Contract Drafting & Negotiation
Licensing, Permits & Regulatory Compliance (D.C. & Federal)
Employment Policies & HR Compliance
Data Privacy & Risk Management
Business Governance & Internal Controls
Local and Federal Grant/Contract Compliance
Operational Efficiency & Strategy
Board Advising & Corporate Recordkeeping


Education
JD, Law – [Insert Law School Name if preferred]
BBA, Business Administration – Certificate in International Business
Certifications
CEM Certified Energy Manager
PMP (Project Management Professional)
Behnam Daryaye Laal
Behnam Daryayelaal is a detail-oriented Project Engineer with over five years of progressive experience in civil engineering, construction project management, and cost estimating. His expertise covers the full lifecycle of mid-rise residential and mixed-use developments from early planning to successful project handover. Behnam brings a strong background in architectural systems, project coordination, and technical documentation, with a proven ability to deliver high-value projects on time and within budget.
Experience
Core Competenices
Construction Estimating & Budgeting
Design and Implement Mid-Rise Residential & Mixed-Use Buildings
Develop Technical Drawings, RFIs, and Shop Drawing using AutoCAD
Project Scheduling & Progress Tracking using Primavera P6
Site Coordination & Safety Management


Education
Masters Degree in Project & Construction Management
Bachelors Degree in Civil Engineering
Bachelors Degree in Architectural Engineering
Certifications
ACCES Construction Estimating
Workplace Hazardous Materials Information System (WHMIS 2015)
Autodesk Certified User (ACU)
Arian Lessani, PhD, PE, PMP
Arian is a construction engineer and building expert with over fifteen (15) years of experience in quality assurance, construction inspection, and energy consulting. He specializes in independent design reviews, field inspections, and engineering investigations across residential, commercial, and federally funded building projects. Arian provides objective, code-compliant evaluations to owners, agencies, and design-build teams, helping to identify risks, improve performance, and ensure adherence to regulatory and contractual standards.
His background spans high-performance building design review, energy audits, MEP coordination, and QA/QC oversight for complex renovations and new construction. Arian is frequently retained as a trusted independent engineer, design peer reviewer and technical advisor, offering impartial assessments that support compliance verification.
Experience
Core Competenices
Independent QA/QC Oversight
Third-Party Plan Review & Inspections
Energy Code Compliance & Energy Modeling
Building Envelope & HVAC Diagnostics
Green Building Standards (LEED, Energy Star, etc.)
Construction Deficiency & Evaluations
MEP Design Coordination Reviews
Owner’s Representative
Design-Build and CM-at-Risk Contract Support
Federal, State, and Municipal Project Compliance


Education
PhD Civil Engineering, Construction Claims
MS Civil Engineering, Project Management
BS Civil & Structural Engineering
Certifications
Professional Engineer (PE), DC, Maryland, Virginia
PMP (Project Management Professional)
PSP (Planning & Scheduling Professional)
CQM-C (Construction Quality Manager for Contractors), USACE/NACFAV
OSHA 30
BPI- MFBT & BAT - 5071755
ICC 79 – Residential Energy Inspector/ Plans Examiner - 10410113