Nophyn Tesil 
Adding more space to a home can be a practical alternative to moving, especially when the existing property already offers the right location, neighborhood, and long-term potential. A carefully designed addition can create an extra bedroom, expand a kitchen, accommodate a growing family, or introduce an entirely new second floor.
The following Seattle-area companies offer home addition, design-build, or major remodeling services. Each has a different approach, making it important for homeowners to compare experience, project scope, communication style, and design capabilities before making a decision.
1. Maksymov Brownstone
Maksymov Brownstone, also known as MB Remodels, provides residential remodeling and construction services throughout Seattle and surrounding areas. Its home addition service covers projects intended to expand living space while maintaining a natural connection between the original structure and the new construction.
For homeowners comparing home addition contractors in Seattle, MB Remodels is a strong first option because the company can guide a project through multiple stages, from early planning and layout decisions to construction and finishing work. This coordinated approach can be especially valuable when an addition affects several parts of the property at once.
The company works on projects such as:
- New bedrooms and family rooms
- Kitchen and dining room expansions
- Second-story additions
- Attached living spaces
- In-law suites and guest areas
- Larger whole-home transformations
A successful addition must match more than the exterior appearance of the house. Ceiling heights, flooring transitions, window placement, insulation, lighting, and circulation should also feel consistent. MB Remodels emphasizes functional planning and personalized project guidance, helping homeowners determine how the new space should support their everyday routines.
The company may be particularly suitable for homeowners who want one remodeling team to manage both the structural expansion and the interior work required to complete it.
2. Jackson Design Build
Jackson Design Build is a Seattle remodeling company that has operated since 1999. The firm specializes in designing and renovating older Seattle residences, particularly homes built between 1900 and 1950.
This experience can be important because additions to older homes often require a detailed understanding of existing structural systems, architectural proportions, and original materials. A poorly planned expansion can easily appear disconnected from a Craftsman, Tudor, or mid-century property.
The company uses a design-build process, meaning design and construction are handled within a coordinated project structure. Its services include home additions and whole-home remodels intended to improve comfort, functionality, and long-term usability.
Jackson Design Build may be a good match for homeowners who want to preserve the character of a vintage Seattle property while adapting it to modern life. Its portfolio and service descriptions emphasize personalized design, communication, and integration between old and new spaces.
3. Model Remodel
Model Remodel is a Seattle design-build contractor specializing in home additions, ADUs, kitchens, bathrooms, and whole-house renovations. Its home addition portfolio includes several expansion types, ranging from relatively compact extensions to major structural transformations.
The company identifies several ways homeowners can create additional space:
- Second-story additions
- Rear or side bump-outs
- Dormer additions
- Garage conversions
- Expanded primary suites
- Combined addition and whole-home remodels
One advantage of working with a company experienced in several addition formats is that homeowners can evaluate alternatives before committing to a particular design. For example, building upward may preserve valuable yard space, while a rear extension may create a more direct connection between the kitchen and outdoor area.
4. Schulte Design Build
Schulte Design Build has served Seattle homeowners since 2001. The company creates remodels, home additions, and carriage houses through an integrated design and construction process.
Its approach focuses on combining residential design with practical construction planning. This can reduce the risk of developing an attractive concept that later proves difficult or excessively expensive to build. Early coordination between designers and builders can help identify structural constraints, material requirements, and budget considerations before construction begins.
Schulte Design Build highlights four principles in its work:
- Integrity throughout the project
- Clear communication with homeowners
- Thoughtful and practical design
- Detailed construction and craftsmanship
The company may be a suitable option for homeowners who want substantial involvement in the design process and prefer to work with one team from initial concepts through project completion. Its services are particularly relevant for customized additions that need to respond closely to the homeowner’s lifestyle and the character of the existing property.
5. Gaspar’s Construction
Gaspar’s Construction is a long-established Seattle-area design-build remodeling company. According to the company, it has worked with local homeowners for more than 50 years and handles residential remodeling projects of different sizes.
Its services extend beyond isolated room renovations, making the company relevant for homeowners considering additions that also require interior reconfiguration. For example, adding square footage may involve relocating a kitchen, opening an existing wall, adjusting stair placement, or remodeling adjoining rooms so that the floor plan works as one coherent space.
Gaspar’s may be worth considering for clients who value:
- A design-build project structure
- Experience with both large and small renovations
- Interior design support
- Personalized planning
- A long history in the Seattle remodeling market
The firm describes itself as a woman-owned business and places a strong emphasis on design, comfort, inclusiveness, and collaboration.
How to Compare Seattle Home Addition Contractors
A polished portfolio is useful, but it should not be the only factor in the selection process. Homeowners should compare contractors based on the requirements of their specific property and project.
Ask About Relevant Experience
A contractor experienced primarily in cosmetic renovations may not be the right choice for a major structural addition. Ask to see completed projects that are similar in scale and complexity to the one being planned.
Review the Proposed Project Process
Find out who will manage architectural plans, engineering, permits, inspections, material selections, subcontractors, and scheduling. Responsibilities should be clearly defined before the agreement is signed.
Compare Scope, Not Just Price
Two estimates may include very different levels of service. One proposal might include design, engineering, and finishes, while another covers construction labor only. Each estimate should explain:
- What work is included
- Which materials or allowances are covered
- What services are excluded
- How changes will be approved
- When will payments be required
Confirm Licensing and Insurance
Homeowners should verify that the contractor is properly registered and insured for the work being performed. References and recent client reviews can also provide insight into communication, reliability, and post-project support.
Final Thoughts
The right home addition contractor depends on the property, architectural style, project scale, budget, and level of design assistance required. Maksymov Brownstone offers a comprehensive remodeling approach for Seattle-area homeowners.
Jackson Design Build and Model Remodel bring substantial design-build experience to complex residential expansions. Schulte Design Build emphasizes customized planning, and Gaspar’s offers a long history of remodeling work in the region.
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