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Cornerstone Custom Construction & Remodeling

Specific scopes

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Open a project type for its scope, estimate factors, planning details, and next step.

01

ADUs & Guest Suites

ADUs and guest suites focus on creating a more independent living area for family, guests, or income use where zoning and property conditions allow. This page is for homeowners exploring attached or detached secondary living space with its own day-to-day function inside the same property.

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What ADUs & Guest Suites Includes

An ADU or guest-suite project is different from a standard remodel because the space has to work as a self-contained or semi-independent living area. Layout, utilities, privacy, access, and local allowances all shape what is realistic on the property.

  1. 01

    This service can include attached guest suites, detached or attached ADUs, and secondary living layouts designed for family use, longer stays, or rental-style function when local rules allow it.

  2. 02

    The project depends heavily on planning because ingress and egress, kitchen or kitchenette scope, bathroom layout, utility support, and privacy all have to be considered together.

  3. 03

    ADU and guest-suite work is often the right path when a household wants multigenerational flexibility, future rental potential, or more self-contained guest living than a normal addition creates.

Estimate Factors

ADU and guest-suite quotes depend on whether the space is attached or detached, local rules, utility requirements, kitchen and bath scope, access, and how much of the project functions like a small independent dwelling instead of a standard room addition.

  1. 01

    The estimate changes with structure type, site conditions, utility tie-ins, privacy needs, and the amount of kitchen, bathroom, and storage work required to make the space usable.

  2. 02

    Detached units often carry different cost drivers than attached suites because site work, utilities, and exterior construction may expand significantly.

  3. 03

    Because zoning and property constraints matter so much, preconstruction and feasibility planning often play a larger role here than on a simpler room addition.

How To Start

If you are considering a more independent living space on the property, we can help determine whether the idea fits the site and whether the right move is an attached guest suite, an ADU path, or a different addition strategy altogether.

  1. 01

    Call if you want space for guests, family living, or a more self-contained secondary unit on the property.

  2. 02

    Email a site sketch, photos, or a description of where the unit or suite might go and how independently it needs to function.

  3. 03

    Use the contact page to request an ADU or guest-suite consultation and include whether the idea is attached or detached, plus the main use you want the space to support.

Questions About ADUs & Guest Suites

What usually affects the cost of an ADU or guest suite the most?
Attached versus detached structure, utility scope, kitchen and bath requirements, site conditions, privacy and access needs, and local approval conditions are the biggest factors.
Why do ADUs need so much planning early on?
Because they involve more than square footage. They often require careful decisions around access, utilities, independence of use, and what the property and local rules will realistically support.

02

Bump-Out Additions

Bump-out additions are for projects that need more functional space without the scale of a full major addition. This page focuses on targeted expansions that improve kitchens, baths, or living areas by pushing the footprint just enough to fix a real layout constraint.

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What Bump-Out Additions Includes

A bump-out is small in footprint compared with a full addition, but it can create a big functional gain when the real problem is one wall line, one appliance run, or one room dimension holding the space back.

  1. 01

    This service can include kitchen, bathroom, and living-space bump-outs that expand the footprint strategically instead of adding a full new wing of square footage.

  2. 02

    The best use case is when a few extra feet solve circulation, storage, fixture spacing, or furniture layout in a room that is otherwise close to working well.

  3. 03

    Even smaller additions still require structural, exterior, and interior integration, so the project has to be planned with the same care as larger expansion work.

Estimate Factors

Bump-out quotes depend on the size of the expansion, foundation and structure approach, roof and exterior tie-in, utility impact, and how much the adjacent room is being remodeled at the same time.

  1. 01

    The estimate changes with whether the bump-out supports a kitchen, bath, or living area and how much cabinetry, fixtures, or layout change is being layered onto the expansion.

  2. 02

    Roof tie-ins, window and exterior detail, and the amount of structural support required all influence the total scope even on smaller additions.

  3. 03

    Interior finish continuity and how much of the existing room must be rebuilt after the expansion also affect cost.

How To Start

If you need just enough square footage to make a room finally work, we can help determine whether a bump-out is the cleanest path or whether the project really needs a larger addition.

  1. 01

    Call if the room feels almost right and a targeted expansion could solve the main layout or spacing problem.

  2. 02

    Email photos or a sketch of the room plus the wall or area you think may need to move outward.

  3. 03

    Use the contact page to request a bump-out consultation and include the room, the added function you want, and whether the expansion is part of a larger remodel.

Questions About Bump-Out Additions

When is a bump-out better than a full addition?
It is usually better when the room needs a small but meaningful size increase to fix layout, storage, or fixture-spacing problems without taking on a much larger expansion project.
What usually affects the price of a bump-out addition?
Footprint, structure and foundation approach, roof tie-in, room type, utility impact, and how much adjacent remodeling is bundled into the project are the main variables.

03

Home Additions

Home additions are for households that need more square footage than the current footprint can deliver on its own. This page focuses on adding new living area in a way that ties structurally, visually, and functionally back into the existing home.

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What Home Additions Includes

An addition has to feel like part of the house, not an extra room attached to it. That means the project depends on structure, roofing, exterior matching, interior circulation, and how the new space connects to the life of the home already in place.

  1. 01

    This service can include bedroom additions, primary-suite expansions, family-room additions, second-story work, and other square-footage growth where the house needs more space rather than only better finishes.

  2. 02

    The biggest challenge is usually integration: tying the structure, roof, exterior finishes, and interior transitions together so the old and new sections feel coherent.

  3. 03

    Additions are often the right fit when moving is not attractive but the current home no longer has the layout or room count the household needs.

Estimate Factors

Home-addition quotes depend on the size and type of the addition, foundation and framing scope, roofing and exterior tie-ins, utilities, finish level, and whether the project affects large portions of the existing home during integration.

  1. 01

    The estimate changes with whether the addition is single-story, stacked, over-garage, or tied into a more complex structural or roof condition.

  2. 02

    Mechanical, electrical, plumbing, and permitting needs can significantly affect scope because the new square footage has to operate as part of the overall house.

  3. 03

    Tie-ins to existing interiors, exterior matching, and the amount of renovation required where old and new meet also influence total cost.

How To Start

If the home truly needs more room, we can help narrow whether the right path is a full addition, a smaller bump-out, or a different way of gaining usable square footage without overbuilding the property.

  1. 01

    Call if the house needs another bedroom, larger living area, expanded suite, or other meaningful square-footage increase.

  2. 02

    Email photos or sketches of the part of the house where the addition might connect and note what new space you want the project to create.

  3. 03

    Use the contact page to request a home-addition consultation and include the type of space needed, the approximate size goal, and whether the addition is tied to a larger remodel.

Questions About Home Additions

What usually affects the cost of a home addition the most?
Size, structural type, foundation scope, roof tie-ins, utilities, finish level, and how much of the existing home has to be reworked where the addition connects are the biggest factors.
Why do additions often involve more than just building the new room?
Because the addition has to tie into the existing structure, roof, systems, circulation, and finishes in a way that makes the old and new parts work together as one home.

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