General contractor in Simi Valley.

Which construction scope fits your home?

Home remodeling in Simi Valley.

Start with what needs to change in daily use: the kitchen layout, bathroom arrangement, storage, light or connections between rooms. A whole-home remodel brings those decisions into one scope with the structure, electrical, plumbing and HVAC work. For a focused project, explore our kitchen remodeling and bathroom remodeling services. Identify the rooms and systems you want to retain before comparing proposals.

Room additions and second stories.

More floor area also changes how the existing house works. A room addition needs a plan for the connection to the home, roof, utilities and adjoining finishes. A second-story addition also needs structural review of the foundation and framing, along with stairs and temporary weather protection. Share the extra rooms you need and ask your design team to compare the options before a construction proposal is finalized.

ADUs and garage conversions.

A detached unit, garage conversion and addition have different site and construction needs. Our ADU construction team reviews equipment access, existing foundations, utilities and the proposed connection to the property. Explain whether the space is for family, guests or another intended use, and bring any site plan or drawings to the discussion.

Custom homes and rebuilds.

For custom home construction, organize the property information, design team and budget before settling on a building scope. If you are comparing a major renovation with a rebuild, include demolition, utilities, site work, construction and temporary housing in the comparison. DG Builders coordinates the construction with your architect, engineers and trades. Our design and construction team guide explains the responsibilities to clarify early.

Plan around Simi Valley’s own permit process.

Confirm the property's jurisdiction first. For a home within the City of Simi Valley, begin with the city's Planning and Building and Safety divisions. The city's construction overview explains that permits are needed for new construction, remodeling and additions, with drawings and supporting documents reviewed before permits are issued.

Prepare the application as a complete package.

The city's online permit instructions describe the Customer Self Service process:

1. Register in the portal. Confirm who will submit the application and use the appropriate contractor or property-owner declaration.
2. Coordinate the documents. For work requiring plan review, the city asks for the complete plan set in one PDF, with other construction documents in separate files.
3. Follow the review and payment sequence. Monitor the application correspondence, respond to corrections and pay the invoiced fees at the relevant stages.

Build the project schedule around the actual review status and approved scope. An uploaded application is one step; construction planning also needs the outstanding corrections, approvals, selections and material lead times.

Check the current ADU information for your property.

The Simi Valley Planning Division provides ADU resources and notes that its ordinance and development standards are undergoing updates. Use the city's current guidance and your design professionals to confirm the proposal for your parcel before relying on dimensions, fees or an approval timetable.

Official starting points: Simi Valley Customer Self Service portal · Building and Safety: (805) 583-6723. Planning information checked October 4, 2026.

Make the first review useful.

• Property and existing conditions: the location or ZIP code, photos, existing plans and permit information if available.
• Your goals: the rooms to change, added living space, features to retain and the way you want the finished home to function.
• Design stage: whether you are exploring options, working with an architect or already have a plan set and agency comments.
• Budget and timing: a target range, preferred start window and any need to occupy the home during work.

When comparing contractor proposals, use the same drawings and written scope. Ask each team to identify allowances, exclusions, work on existing systems and how concealed conditions or changes will be handled. This makes the construction choices easier to compare before you commit.

All service areas · Our West Hills base · Woodland Hills · Calabasas