Existing house + utilities
Verify foundation, framing, roof, electrical, plumbing, HVAC, drainage, and concealed conditions.
Selected OWL TOWER GROUP work; client locations are not published.Hermosa Beach additions and ADUs
Home Additions & ADU Contractor in Hermosa Beach
Make every added square foot improve the way the entire property works.
An addition or ADU in Hermosa Beach has to connect new space with an existing home, limited site access, neighboring properties, structure, utilities, water management, finishes, and daily life. We coordinate those connections as one project.
LicenseCalifornia CSLB #1108551 · Class B
ServiceAdditions, ADUs & expansions
CoverageHermosa Beach
DeliveryOne accountable general contractor
Local project context
The best expansion does not leave a visible or technical seam between new and existing work.
Foundation, framing, roof, electrical, plumbing, HVAC, drainage, existing elevations, and concealed conditions influence both the approved design and the construction sequence. Early verification makes the tie-in plan more reliable.
The final scope may combine an attached addition, detached ADU, structural opening, interior reconfiguration, system upgrades, exterior restoration, and landscape interfaces. We evaluate the property as one building environment.
Relevant built work
Evidence of the interfaces we manage.
Selected OWL TOWER GROUP work relevant to this scope; client names, addresses, and project locations remain private.
Custom home case studyCustom Home Exterior Completion
A before-and-after project brief focused on the interfaces that turn an active residential site into a finished home.
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Residential envelope case studyResidential Glazing and Landscape Connection
A project brief on large-format openings, views, waterproofing, perimeter details, and interior finish transitions.
↗Local decisions that deserve early attention
Project-specific decisions before mobilization.
New-to-existing tie-ins
Coordinate elevations, structure, waterproofing, roofing, openings, systems, and finish continuity.
Neighbor-aware logistics
Plan access, deliveries, staging, protection, noise, temporary conditions, and occupied areas.
Whole-property result
Align circulation, daylight, exterior appearance, service capacity, landscape, and daily use with the added space.
Coordinated project scope
A connected scope from review through turnover.
- 01Feasibility, existing conditions, and preconstruction
- 02Selective demolition, temporary protection, and preparation
- 03Foundations, framing, envelope, roofing, and MEP extensions
- 04Interior integration and exterior restoration
- 05Inspections, documentation, punch, and turnover
One visible path from review through turnover
The project moves through a visible operating logic.
- 01
Assess
Review the property, objectives, available documents, access, operations, known conditions, and owner priorities.
- 02
Define
Translate the project into a coordinated scope, decision register, procurement plan, schedule logic, and budget narrative.
- 03
Resolve
Close structural, envelope, MEP, glazing, finish, logistics, and responsibility interfaces before installation.
- 04
Build
Manage trades, inspections, protection, reporting, quality, schedule, cost, and changes through one project lead.
- 05
Turn over
Verify the work, close punch items, organize records, orient the owner team, and complete a controlled handoff.
Hermosa Beach addition and ADU questions
Straight answers before construction is committed.
01Can an addition be combined with a whole-home remodel?+
Yes. A combined plan often improves structural, systems, finish, procurement, and occupancy coordination.
02Can residents remain in the original house?+
Possibly. Utilities, safe separation, weather protection, access, noise, dust, and the duration of critical tie-ins must be reviewed.
03Can you coordinate our architect and engineer?+
Yes. We organize construction around the approved work of the owner’s appropriately licensed design professionals.
04Is the featured image claimed as a Hermosa Beach project?+
No. It is selected portfolio work demonstrating relevant construction capability; client locations are intentionally not published.
Hermosa Beach additions and ADUs