Colleen Boretto


Colleen has over 30 years of experience in the commercial real estate & construction industry working in estimating, preconstruction and construction management positions.   Prior to founding Boretto + Merrill, she held key positions with several prominent developers and contractors including, Lennar Urban (Vice President), Webcor Builders (Vice President), Swinerton Builders (Director), Pacific Coast Steel (Vice President), & Walter Shorenstein (Project Manager).


She brings considerable Type I, Type II & Type V direct design and construction knowledge to your team, including commercial office, hospitality, multi-family, entertainment and government projects.  


Her vast experience includes creating and developing systems for comparing budgets, proformas and programming to assist with acquisition underwriting or day-to-day management of your project.  She has well established procedures for Architecture, Engineering and General Contractor selection.  Colleen possesses veteran skills and understanding of all aspects of construction, cost management, value engineering, constructability/engineering review, scheduling, oversight of the pre-construction and construction process.


Key projects:   Broadway 655 (San Diego), Sorrento Towers (San Diego), Breeza (San Diego), Central Park (Irvine), Marriott (Del Mar), Pier Pointe (Marina del Rey), LAX Control Tower (Los Angeles), Sony Pictures Studio (Los Angeles), Warner Bros. TV Producers Building (Toluca Lake), Dreamworks Animation (Glendale), and the Monaco Hotel (San Francisco)


Certificates: OSHA 10-hour, annual certification in first aid and CPR,

Proficiencies: Timberline, Project, Suretrak, Bluebeam, Excel, Word, JD Edwards 

Brad Miller PE

Brad Miller is a professional engineer who has been working in the civil engineering field for over 11 years.  He is proficient in all aspects of project phases having provided preliminary design, final design and construction services on many large scale civil infrastructure and site development projects.  His experiences on these past projects make him an expert at utilities, grading, drainage, City permitting, budgeting, scheduling and project management.


As a civil engineer, Brad has been involved in the property acquisition, design, construction and construction management phases of some notable projects within the San Diego area. Most recently Brad has worked with The Patio Restaurant Group on the renovations of a space for their newest location in Liberty Station.  For this project Brad was highly involved in the analysis of contractor bids in preparation for selecting a general contractor for the project.  Brad also worked closely with The Control Group providing a comprehensive due diligence report for the purchase of a 65,000 sf building site in the former Rush Press operations and printing building in Little Italy.  Brad was also a part of the San Diego Airport Authority’s Rental Car Center Project.  During this project Brad not only co-managed the civil improvements but also worked on design related elements within the building.  Brad was instrumental in coordinating all project disciplines, the building permit process and managing submittals and RFI’s during the construction phase.  Brad was also lead for the design services contract for all underground utilities on the Mid-Coast Corridor Transit project (blue line trolley extension) from Old Town Transit Center to UTC in La Jolla.  This involved over 11 miles of wet utility relocation and coordination. 


Brad is a graduate of the University of Wisconsin-Madison and has been a member of the San Diego community for 5 years.  Before moving to San Diego, Brad lived and worked in Madison, Wisconsin where he was able to be a part of many developer and municipal site development projects.  While in San Diego, Brad has become a board member at the Lois Merrill foundation, a local non-profit which has raised over $200,000 in funds used to further cancer research and to pay medical bills of rare cancer patients who cannot afford the cost of their care.  Brad is also an avid athlete who enjoys surfing, triathlons, soccer or any other sport that can be enjoyed in the San Diego weather. 


Proficiencies: Bluebeam, Microsoft Office, MicroStation, AutoCAD and Inroads

David Nathe

Project Manager

David has extensive experience working in the planning, design, pre-construction, and construction of a broad range of projects including both renovation and new construction.  His unique background includes extensive work in project planning, design, cost estimating and budget analysis, project scheduling, and value engineering for the ultimate realization of successful projects.  He has developed standards for selection of professional services for several national and regional institutions and lead development teams in the selection of architects and contractors.  David has provided creative solutions for many renovations, including the challenges posed by existing structures, demolition, abatement and historical approvals.  Most recently, he provided oversight in the creation of 231 apartments in a historic 14-story building in downtown San Diego.


Before joining Boretto + Merrill, David was the Director of Development Consulting for Gro Development, consulting the senior leadership and leadership boards in the planning, design, and development of facilities for the highest impact on operations.  Clear intent and direction helped his clients restructure real estate portfolios and develop facilities as tools for meeting organizational goals and needs. His work impacted hundreds of projects and over $1.0 billion of capital development planning in more than 24 states.  David also provided real estate consulting services as a Senior Consultant for Deloitte & Touche in Chicago. He started his career as a project architect in a Chicago design-build firm specializing in residential and commercial projects.


David holds a Bachelor of Architecture degree from the University of Notre Dame and has lived in San Diego since 2014.  He is a life-long swimmer who enjoys all water sports.  He also serves on the facilities committee of a non-profit developing a new college preparatory school for underserved families of San Diego.


Proficiencies: AutoCAD, Microsoft Office, Excel

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Angela Merrill, PE, Licensed Real Estate Agent


Angela has been a leader in the Southern California real estate market for over 20 years as an engineer and a developer. Angela is experienced in traditional suburban construction, Type I, Type V and Type III modified construction. She is proficient in entitlements, permitting, Department of Real Estate processing, architectural design of urban and suburban product, unit mix analysis and market positioning, budget preparation and management, market positions, sales strategy, pricing strategy, project management, schedule analysis, project close out, move in strategy, preparation of governing documents, and customer service.


As civil engineer, Angela designed custom homes, golf courses, and entitled, designed, permitted and supported construction for several suburban and urban developments in San Diego.


In 2003 Angela joined K. Hovnanian Homes. She led the traditional suburban homebuilder into the national urban market by developing its first three urban projects, all located in downtown San Diego and totaling over 600 units. She oversaw entitlement, team selection, design, construction, sales, move-in strategy and customer service efforts. Subsequently, as Director of Acquisitions and Area Vice President, Angela oversaw the acquisition of single-family residential communities, high-rise developments and mixed-use properties throughout Southern California as well as oversaw all aspects of design development, entitlement and permitting, construction, sales and customer service.


Since departing K. Hovnanian Homes, Angela has been a principal at Boretto + Merrill focused on assisting clients with acquisition of assets, proforma budgeting and cost estimating, entitlements, construction management and project close out.


Angela is a graduate of The University of Michigan and has been living in San Diego for over 20 years. In her spare time, Angela has sought out personal real estate ventures purchasing apartments then renting, managing, renovating and converting them to condominium units. Angela also founded a non-profit organization, The Lois Merrill Foundation, which has raised over $200,000 in funds used to further cancer research and to pay medical bills of rare cancer patients who cannot afford the cost of their care. Angela has her black belt in Kenpo Karate, and is an surfer, yogi and traveler having visited over 30 different countries and 4 continents.


Key Projects: The Conrad Center for Performing Arts, 1836 Columbia, Hymettus Estates, Celsius Lemon Grove, The Park at Banker's Hill, The Hotel Del Coronado Industrial Area, Petco Park, Omni Hotel, M2i, Doma, Cortez Blu, Acqua Vista, Gaslamp Square, and many more.


Proficiencies: Microsoft Project, Excel, and AutoCAD

DRE License Number 01862021

Licensed Professional Engineer

Kymberli Clement

Kymberli is a Construction Manager with over 15 years of success working on commercial and residential projects. Her expertise ranges from office tenant improvements and home remodels to new construction of multi-million dollar projects.


She is able to navigate through the Entitlement and Construction Permit process, ensuring a timely receipt of construction permit and any subsequent construction change approvals. Kymberli collaborates well with owner, architect, contractors and financiers for completion on time and on budget. She provides the client with a thorough review and tracking of construction preliminary notices, contractor insurance certificates and lien releases for client billings. Kymberli is an expert at processing the Notice of Completion and the construction Close-Out documents at project completion. A strength Kymberli offers is her continuous communication to keep owner up to date with progress, and is very personable with all levels of personnel.


Kymberli began her career in commercial construction in 2001 as the facility manager for one of the largest rebar manufacturers in the nation, PCS. During her ten years at PCS, she managed the ground up construction in four states of almost one million square feet of office, warehouse and manufacturing spaces from conception to completion. During this same time, Kymberli was the Project Manager for remodel of three La Jolla beach-front homes. She coordinated with the architect and design team for the permitting process, processed the AIA contract agreements and sourced and specified products as needed.


Since joining Boretto + Merrill in 2014, Kymberli has Project Managed two restaurant projects, two residential developments, and taken on a new industrial project in Riverside county. Kymberli provides her clients with excellent customer service and really enjoys completing a project on time, on budget and to the complete satisfaction of the owner. Kymberli enjoys the variety of the Boretto + Merrill projects and the vast knowledge and expertise offered by its team. When not working, Kymberli likes to SUP in Mission Bay or snowboard with her husband and three sons. She has a BA in Art History from SDSU, and has completed a certificate program in Interior Design at UCSD.



Mandy Miller

Project Manager

Mandy Miller is a Project Manager with over 15 years of success working on residential projects with an emphasis on high end custom home and multifamily residential building. Mandy has worked with architects and design consultants from the onset of a project to assist in the design and specifications for a project to create successful and cost-effective plans and specifications. She has spent many years managing the buyout of projects and can provide effective value engineering suggestions to bring a project in on budget.


Mandy has a back ground in due diligence during the initial exploration of feasibility of a project. Mandy has successfully presented to design review boards and architectural committees to receive approval for projects. Mandy has extensive experience in the permitting and entitlement of projects and has an established relationship with building officials in most of the Southern California Governing agencies.

Mandy has acted as a project superintendent for 15 spec homes. Having that background Mandy has gained respect with the subcontractors and is able to provide valuable feedback on site as a project is being constructed.


Mandy began her career in residential home construction as an accounts payable representative for Beucler Signature Homes. She quickly grew in her company moving from options coordination to purchasing. In the 2007-2008 downturn, Mandy was given the opportunity to not only manage jobs on a project management side, but to run the projects as a superintendent while at the same time handling the payables, bank draws, and purchasing of the projects. She also assisted in showing the homes and securing buyers. She joined the Boretto + Merrill in 2017 as a Project Manager taking on a variety of products as a Project and Construction Manager.

When not working, Mandy is a hobby Photographer and enjoys many outdoor activities with her husband and two sons including hiking, surfing, wakeboarding, snowboarding, and riding dirt bikes. Mandy is a licensed notary public, has training in LEED certification, TimberlineSAGE, Bluebeam, QuickBooks, MS Office, and Adobe Photoshop.

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Boretto + Merrill Consulting, LLC    619.822.2001

4871 Viane Way San Diego, CA 92110

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