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Boise home addition guide for second stories, suites, and ADUs

Home Additions

Second stories, suites, ADUs, and garage conversions.

Every article below is written by the Boise Remodeling Co design-build team for homeowners across Boise, Meridian, Eagle, Nampa and the wider Treasure Valley, with real planning ranges, Ada and Canyon County permit context, and lessons from projects we have actually built. Start with the complete guide for the full overview, or jump to a specific article below.

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Home addition under construction with new framing, roof trusses, and foundation tied into an existing Boise house
Home AdditionsJuly 10, 2026

Home Addition Timeline: How Long Does an Addition Take?

A home addition is a bigger project than an interior remodel, and the timeline reflects it. Here is a realistic, phase-by-phase look at how long an addition takes in Boise.

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In-law suite for multigenerational living with a compact kitchenette and sitting area in a Boise home
Home AdditionsJuly 10, 2026

Multigenerational Living Remodels: In-Law Suites and More

More Treasure Valley families are living under one roof across generations. Here is how to remodel for multigenerational living - in-law suites, ADUs, and homes that balance togetherness with privacy.

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Bright new bedroom addition with large windows, neutral walls, and a wood floor in a Boise home
Home AdditionsJuly 9, 2026

Bedroom Additions in Boise: Adding the Room You Need

Whether for a growing family, a guest room, or a home office, a bedroom addition adds the room you need. Here is what it takes to add a bedroom in Boise - and do it to code.

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Completed second-story addition on a former single-story Boise ranch with matching siding and roofline
Home AdditionsJuly 9, 2026

Second-Story Additions in Boise: Building Up Instead of Out

When there is no room to build out, building up can double your living space. Here is what a second-story addition involves in Boise - structure, cost, and how to plan it well.

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Spacious primary suite addition with a vaulted ceiling, sitting area, and ensuite glimpse in an upscale Boise home
Home AdditionsJuly 8, 2026

Primary Suite Additions: Adding a Master Suite in Boise

A primary suite addition adds a private retreat - bedroom, bathroom, and closet - to your home. Here is what it includes, what it costs, and how to plan a master suite addition in Boise.

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Finished basement family room with a sectional, media area, egress window, and warm neutral finishes in a Boise home
Home AdditionsJuly 5, 2026

Basement Finishing in Boise: Cost, Egress, and What to Know

Finishing a basement adds living space at a lower cost than building up or out. Here is what it costs, what egress and moisture rules to plan for, and how to do it right in Boise.

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Converted garage finished as a bright bonus room and home office with new windows and luxury vinyl plank flooring in a Boise home
Home AdditionsJuly 2, 2026

Garage Conversions in Boise: Add a Room Without Adding On

A garage conversion is one of the most affordable ways to add real living space to a Boise home. Here is what it involves, what it costs, and how to do it right.

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Detached accessory dwelling unit backyard cottage with lap siding and a covered porch in a Boise backyard
Home AdditionsJune 29, 2026

How Much Does an ADU Cost in Boise? A Real Budget Breakdown

An ADU is one of the best ways to add space, income, or multigenerational living to a Boise property. Here is what one really costs, what drives the price, and how to plan yours.

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Accessory dwelling unit completed in a Boise backyard with separate entry
Home AdditionsMay 15, 2026

ADU Guide Boise

Planning adu guide boise with local permits and design-build coordination.

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Completed room addition blending with original Treasure Valley home architecture
Home AdditionsMarch 12, 2026

Room Addition Guide: Matching Your Home in the Treasure Valley

Additions that look original need early design and realistic permits.

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