Home(916) 544-8114Room Addition Contractor in Sacramento
Expand the home with structure, utilities, weather protection, interior finishes, permits, and transitions designed to work with the existing building.
CA License #987850 · Licensed · Bonded · Insured · EPA Lead-Safe
3 Pyramid Construction & Renovation Corporation
California General Building Contractor — License #987850
- Licensed
- Bonded
- Insured
- EPA Lead-Safe Certified
For expanded living areas, primary suites, family rooms, home offices, bedrooms, bathrooms, and connected additions.
We begin with the property, the complete requested scope, the owner’s budget framework, desired timing, available plans, and known site conditions. Final scope, price, and schedule require project-specific review and a separately signed agreement.
How this project moves from idea to construction.
The sequence is adjusted for design, engineering, permits, inspections, selections, procurement, existing conditions, and the responsibilities stated in the signed contract.
- 01
Define the added space
Document intended use, approximate size, relationship to the existing home, budget, timing, and available plans.
- 02
Resolve design and approvals
Coordinate the information required for engineering, energy review, permit submittal, and reliable pricing.
- 03
Plan the connection
Detail structure, roof, drainage, utilities, openings, exterior materials, interior transitions, and occupied-home protection.
- 04
Build the shell and systems
Complete foundation, framing, dry-in, rough trades, inspections, insulation, and wall closure in sequence.
- 05
Integrate finishes
Complete exterior and interior finishes, fixtures, systems testing, final inspections, and closeout.
A useful budget starts with the complete scope.
Online ranges can help with early planning, but they are not bids or price guarantees. These project conditions commonly affect the final cost:
- Addition size, shape, roofline, and number of stories
- Foundation and structural connection to the existing home
- Kitchen, bathroom, laundry, or other utility-intensive spaces
- Site access, grading, drainage, service upgrades, and exterior restoration
- Plans, engineering, permits, energy requirements, and inspections
- Windows, doors, cabinetry, fixtures, flooring, and finish level
Common homeowner questions.
Why does an addition cost more per square foot than some existing rooms?+
An addition creates new foundation, structure, roof, envelope, utilities, and transitions before interior finishes begin. Small additions also spread fixed design and mobilization costs over fewer square feet.
Can we live in the home during construction?+
Sometimes. The answer depends on access, utility interruptions, opening the existing exterior wall, dust and noise control, safety, and the agreed construction sequence.
How long does planning take?+
Design, engineering, owner decisions, permit review, corrections, procurement, and scheduling all occur before or alongside construction planning. Timing is property- and jurisdiction-specific.
Help us understand the property before the first call.
Provide ownership, address, ZIP code, scope, budget, timing, decision-maker information, and optional photographs or plans. Your submission is delivered to 3pyramid@usa.com.