Sarah Lawson, S+H’s Chair and owner, received the Preservation Award from the Cambridge Historical Commission for her work maintaining historic integrity while upgrading comfort and function. That same balance — honoring the past while meeting today’s needs — is central to every historic project the team takes on.
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What S+H Construction makes possible in historic renovations
Preserving character while adding modern comfort
S+H's craftspeople specialize in preserving and replicating historic details most contractors can't handle, from hand-carved moldings to period-appropriate hardware.
Window restoration highlights our approach. Instead of defaulting to replacement, the team evaluates each window on its own. Many original units can be restored through reglazing, weatherstripping, and storm window additions, which improve comfort and efficiency while maintaining historic integrity. When replacement is the better option, S+H sources windows that match the home's architectural character.
S+H also works with Greater Boston's leading architects, including but not limited to — LDa Architecture & Interiors, ZeroEnergy Design — to design additions and renovations that respect historic architecture while meeting modern needs.
Invisible modern systems integration
S+H specializes in integrating modern HVAC, electrical, and plumbing without compromising historic plaster, woodwork, or architectural details. We plan system routes carefully to keep upgrades discreet and preserve the home's original aesthetic.
Improving energy efficiency in historic homes requires building science expertise and respect for traditional construction. S+H Construction brings older homes close to Passive House performance using:
- Enhanced insulation methods, including dense-pack cellulose and wood fiber
- Thoughtful mechanical design with high-efficiency heat pumps
- Strategic air sealing that doesn't compromise historic fabric
Winning the 2024 Silver PRISM Award for High Performance/Energy Efficient Home reflects this capability, demonstrating that historic charm and modern comfort can coexist seamlessly.
A proven approach to historic home renovation
Comprehensive assessment: Understanding your home's potential
Before any work begins, S+H conducts a detailed assessment informed by 45+ years of experience. Foundation monitoring for pre-1950 homes is a specialty service we provide. Evaluating what is stable versus what requires attention prevents surprises and protects your investment over the long term.
Our examination determines which elements can be preserved, which should be updated, and how to maximize value. Thorough planning ensures budget certainty and smooth project execution.
Navigating Historic Commission approvals with ease
S+H's relationships with the Cambridge Historical Commission, Belmont Historical Commission, and Newton Historic Commission help streamline approvals. We manage presentations, documentation, and follow-up, typically securing approvals within 30 to 60 days.
Experience with commission preferences keeps projects on schedule. You review and approve the plan, while S+H handles the details, making the process straightforward and stress-free.
Understanding Massachusetts stretch code requirements
Many Greater Boston municipalities, including Cambridge, Newton, Brookline, and Somerville, have adopted the Massachusetts stretch energy code — a more stringent building code that applies to major renovations, additions exceeding 500 square feet, and new construction.
The stretch code requires enhanced insulation values, improved air sealing, and third-party energy performance verification. For historic homes, S+H balances these energy requirements with preservation guidelines, integrating upgrades from the design phase to prevent delays. Our team coordinates required HERS ratings and blower door testing, ensuring your renovation meets both regulatory requirements and historic commission expectations while preserving architectural character.
Collaborative design and transparent execution
S+H works closely with your architect and keeps you engaged at every stage. Our cost-plus pricing model provides detailed bi-weekly invoicing, so you always see exactly how your investment is being applied.
Dedicated project managers ensure clear and consistent communication, from consultation through to completion.
S+H's experience across historic home styles
Colonial homes: S+H's specialty since 1978
S+H has renovated dozens of Colonial homes, particularly throughout Cambridge, where the company was based for 42 years. Our team creates open, light-filled spaces while respecting Colonial proportions and preserving original features such as wide-plank floors and hearths.
Victorian homes: Where craftsmanship shines
Victorian homes showcase S+H's restoration expertise. Ornate trim, period colors, and intricate details require craftspeople skilled in traditional methods. S+H maintains room flow and ornamental features while improving functionality and comfort.
The team works with historic paint colors when appropriate, analyzing original finishes, matching period-accurate palettes, and sourcing materials that honor Victorian craftsmanship.
Mid-century modern: Preserving newer historic architecture
S+H understands the importance of mid-century preservation as these homes reach historic age. Large expanses of glass and minimal insulation present energy efficiency challenges.
Our goal is to upgrade performance while respecting original design intent, using wood fiber insulation, high-performance glazing, and strategic air sealing.
Our specialized solutions for historic homes
From damp basement to beautiful living space
S+H's proprietary Dry Basement Solution has transformed hundreds of historic basements for more than a decade. The crystalline waterproofing treatment seals masonry from the inside, without exterior excavation.
This treatment prevents moisture penetration in homes over 150 years old, transforming previously unusable basements into functional home offices, guest suites, and living areas. It adds valuable square footage while reinforcing foundation structures, avoiding the cost and disruption of exterior excavation.
Modern kitchens that honor historic context
S+H creates kitchens that combine modern functionality with historic charm. In Victorian-era homes, for example, contemporary appliances are seamlessly integrated with period-appropriate cabinetry and restored original floors.
Custom built-ins replicate historic millwork while providing the storage and layout families need today. The result is a kitchen that honors the home's character while supporting modern living.
Why choose S+H Construction for your historic renovation?
S+H brings over 45 years of expertise to every project. Sarah Lawson's Preservation Award, multiple Best of Boston Awards (S+H was the first residential contractor to receive this recognition in 2007), and 2024 PRISM Awards reflect our company's proven approach.
Some notable advantages include:
- Established relationships with historic commissions across Greater Boston
- Partnerships with leading local architects and design professionals
- Transparent cost-plus pricing with bi-weekly detailed invoicing
- OSHA-compliant safety standards and a strong safety record
- Long-tenured team with specialized craft skills in traditional methods
Choosing S+H means partnering with a team that has successfully guided hundreds of historic renovations across Cambridge, Belmont, Boston, Charlestown, South Boston, Somerville, and Wayland.
Frequently asked questions:
1) How much does a historic renovation cost with S+H Construction?
S+H's cost-plus pricing ensures transparency from the start. Costs vary by project scope, materials, and existing conditions.
Detailed assessments and bi-weekly invoicing keep you informed, and quality work preserves and enhances property value in Greater Boston.
2) How does S+H handle historic commission approvals?
S+H manages the full approval process, including presentations, documentation, and follow-up. Established relationships with Cambridge, Belmont, and Newton historic commissions streamline approvals, usually within 30 to 60 days.
You review and approve the plan, while S+H handles all the details. Commissions generally review exterior changes, additions, and visible alterations.
3) Can you add an addition to a historic home?
Yes. S+H has completed numerous historic home additions throughout Greater Boston. Additions are designed to be subordinate to the original structure and use appropriate materials.
For example, a Cambridge project added a modern kitchen and family room behind the historic facade, maintaining street-facing character while harmonizing with the original construction and meeting stretch code requirements.
S+H also ensures compliance with local building codes, including stretch energy codes in municipalities like Cambridge and Newton, which require enhanced insulation and energy performance.
4) How can S+H make my historic home energy efficient?
S+H brings historic homes close to Passive House standards through super-insulation, triple-pane windows, heat pumps, and strategic air sealing.
The 2024 Silver PRISM Award recognizes this work. S+H also helps maximize Mass Save rebates for insulation, HVAC upgrades, and weatherization. Energy efficiency improvements reduce heating and cooling costs while preserving historic integrity.
5) Should original windows be repaired or replaced?
S+H evaluates each window individually. Many original windows can be restored with reglazing, weatherstripping, and storm window additions, improving performance while maintaining authenticity.
When wood is beyond repair, replacement with historically accurate units is used. For example, 12 restored windows with custom storm panels reduced heating costs by 30% in a Victorian project.
6) What if you discover hidden problems during renovation?
S+H's thorough assessments minimize surprises. With decades of experience on pre-1950 homes, most issues are anticipated.
If unexpected problems arise, S+H presents solutions immediately. Changes only proceed after your approval. A 15 to 20% contingency is recommended for historic projects.
7) Can you create an open floor plan in a historic home?
It depends on the structure and architectural style. S+H evaluates walls carefully, removing non-load-bearing walls when possible and using beams for load-bearing situations.
The goal is maintaining period-appropriate proportions while improving flow. In a Victorian renovation, S+H opened the kitchen and dining area while preserving the front parlors' original layout.
8) Does S+H work with specific architects, or can I bring my own?
S+H collaborates with both. The team has strong partnerships with many leading architects, including but not limited to: LDa Architecture & Interiors, ZeroEnergy Design,
If you have your own architect, S+H integrates seamlessly, ensuring plans account for structural realities, historic requirements, and budget from the start.
9) What makes S+H different from other contractors for historic work?
S+H's 45+ years specializing in Colonial, Victorian, and mid-century architecture means expertise in traditional methods most contractors lack.
Sarah Lawson's Preservation Award and the company's established historic commission relationships, transparent pricing, and skilled, long-tenured craftspeople set S+H apart. The combination of preservation knowledge and modern building science delivers authentic, high-performing historic renovations.
10) How does S+H source period-appropriate materials for historic renovations?
S+H maintains relationships with specialty suppliers throughout New England who provide historically accurate materials, from custom millwork and period hardware to authentic flooring and window components.
For projects requiring replication of original details, S+H's craftspeople can match existing profiles, finishes, and construction methods. When original materials can be salvaged and restored, we prioritize preservation. This network and expertise ensure your historic home maintains architectural authenticity while meeting modern building codes and performance standards.
Your historic home's best partner
For over 45 years, S+H Construction has guided homeowners in Greater Boston in updating historic homes while preserving their character. From Colonial and Victorian to mid-century properties, S+H combines specialized craftsmanship with deep preservation knowledge to achieve seamless renovations.
When you're ready to explore your home's potential, we're here to help. Historic renovation is an investment in both the home's past and future — S+H ensures your vision is realized and your investment protected.
Ready to bring your historic home into modern life? Call (617) 876-8286 or visit shconstruction.com/contact to schedule your consultation.
About S+H Construction
S+H Construction is a leading residential construction and renovation firm based in Massachusetts, recognized for its exceptional craftsmanship and commitment to quality. With decades of experience, S+H specializes in custom home building, historic restorations, and complex renovations, delivering projects that seamlessly blend timeless design with modern functionality. The company is known for its collaborative approach, working closely with homeowners, architects, and designers to bring unique visions to life. S+H’s dedicated team of skilled professionals prioritizes communication, attention to detail, and sustainable practices, ensuring every project exceeds expectations.

Builder’s Notebook: The Podcast
S+H’s Sarah Lawson and real estate and renovation consultant Bruce Irving talk about building, renovating, design, and everything in between. The podcast has dropped and is available on the following apps; Anchor FM, Apple, and Spotify.