Residential construction in progress with structure, openings, envelope, and site access visible
Selected OWL TOWER GROUP work; client locations are not published.

Expand the property

Additions, ADUs & expansionsNew space has to work with the house that is already there.

Additions and accessory structures create interfaces between new and existing foundations, framing, waterproofing, roofing, utilities, finishes, site drainage, access, and daily life. Those interfaces—not only the added square footage—define project risk.

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LicenseCA CSLB #1108551 · Class B
ServiceAdditions, ADUs & expansions
Primary areasLos Angeles + Orange County
DeliveryPreconstruction to turnover

Expand the property

Plan the connection before building the expansion.

We coordinate existing-condition verification, architect and engineer information, utility capacity, code and permit requirements, demolition limits, temporary protection, structural tie-ins, envelope continuity, MEP extensions, and finish transitions.

The right scope may include an attached addition, second story, detached ADU, interior reconfiguration, garage conversion, or a combined renovation. We evaluate the project as one property rather than treating the new structure as an isolated box.

Critical addition and ADU decisions

Decisions that deserve early coordination.

01

Existing structure

Foundation, framing, roof, shear, utilities, and concealed conditions influence the new design and construction sequence.

02

Site logistics

Access, staging, neighboring properties, occupied areas, excavation, deliveries, and protection must be realistic.

03

System capacity

Electrical, plumbing, sewer, HVAC, fire protection where applicable, and service upgrades need early confirmation.

04

Finish continuity

Floor elevations, windows, roofing, waterproofing, exterior materials, interiors, and landscape should read as one property.

Expansion project scope

One connected path—not isolated scopes.

  1. 01Feasibility and existing-condition review
  2. 02Preconstruction and budgeting
  3. 03Architect and engineer coordination
  4. 04Structural and MEP integration
  5. 05Envelope, interiors, and exterior work
  6. 06Inspections, documentation, and turnover

Connect new construction to the existing property

The project moves through a visible operating logic.

  1. 01

    Evaluate

    Review desired use, site, existing building, access, utilities, and available documents.

  2. 02

    Coordinate

    Align design, engineering, permits, scope, budget, procurement, and temporary conditions.

  3. 03

    Prepare

    Protect occupied areas, verify conditions, manage demolition, and establish reliable tie-in points.

  4. 04

    Construct

    Build structure, envelope, systems, interiors, and site work through coordinated inspections.

  5. 05

    Integrate

    Complete transitions, testing, finishes, landscape interfaces, records, and turnover.

Related service areas

Projects evaluated by scope, site, and schedule.

Manhattan BeachHermosa BeachTorrancePasadenaAltadenaBrentwoodSanta MonicaIrvine

Addition and ADU questions

Straight answers before construction is committed.

01Can you work with our architect and structural engineer?

Yes. We coordinate the owner’s design professionals and execute the approved construction documents.

02Can an addition be combined with a whole-home remodel?

Yes. Coordinating both scopes together often produces a cleaner structural, systems, finish, and occupancy plan.

03Can the original house remain occupied?

Possibly. We evaluate life safety, utilities, separation, access, dust, noise, weather protection, and the duration of critical tie-ins.

04Do you handle permitting?

We coordinate the construction permit path and inspection readiness with the responsible design team and applicable authority.

Expand the property

Let the addition improve the whole property—not create a permanent seam in it.

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