Many Burlingame homes — especially 1920s-30s Tudor Revivals and English Cottages in Burlingame Park and Lyon-Hoag — were built when families and living patterns were smaller. salt air corrosion on metal flashings and gutters within 1 mile of the bay often surface during addition projects, and we address them as part of the build.
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For second-story pricing factors, use our Bay Area second story addition cost guide.
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Share your property and expansion goals. We will discuss the existing home, feasibility, design, permits, and the next planning step.
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Responsive from consultation through project closeout
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Addition Services 
Start With the Home Expansion Path You Need
Second-Story Additions
Vertical expansion planned around the existing foundation, framing, stair location, roof changes, seismic work, utilities, and occupied-home logistics.
Room Extensions
Attached ground-floor space coordinated with the existing plan, foundation, roof, openings, drainage, building systems, and architectural character.
Guest Houses and Detached Living Space
A separate project path for detached guest space. Independent dwelling units also require ADU-specific feasibility and permit review.
Whole-House Remodels
Coordinated work across most rooms and building systems when the project changes the home beyond one added space.
Burlingame's housing stock spans 25% pre-1940, 30% 1940-1960, 20% 1960-1985. Architectural styles range from 1920s-30s Tudor Revivals and English Cottages in Burlingame Park and Lyon-Hoag to postwar ranches in Burlingame Hills and Ray Park. Each era and style presents different home additions requirements — from material compatibility to structural considerations. Our crews know what to expect before they arrive on site.
Neighborhoods We Serve
Home Additions Across Burlingame Neighborhoods
Local planning starts with the site, neighborhood context, access, and applicable city review.
Mills Estates
Mills Estates homeowners frequently choose Hamilton Exteriors for home additions. Many Burlingame homes — especially 1920s-30s Tudor Revivals and English Cottages in Burlingame Park and Lyon-Hoag — were built when families and living patterns were smaller. With Burlingame's Bay-moderated: summer highs 65-75°F, winter lows 42-50°F, material selection in Mills Estates requires local expertise.
Burlingame Village
In Burlingame Village, homes are predominantly postwar ranches in Burlingame Hills and Ray Park. salt air corrosion on metal flashings and gutters within 1 mile of the bay often surface during addition projects, and we address them as part of the build. Our crews are familiar with Burlingame Village's architectural character and building requirements.
Burlingame Hills
Burlingame Hills homeowners expand premium homes with additions that capture hillside views. Second-story additions and primary suite expansions are common projects in this sought-after Burlingame neighborhood.
Ray Park
Ray Park families add space with kitchen expansions, family rooms, and additional bedrooms. Central Burlingame location makes these homes worth investing in. We design additions that integrate naturally with existing floor plans.
Lyon-Hoag
Lyon-Hoag homeowners build additions to maximize living space on downtown-adjacent lots. Our architect designs efficient expansions that work within zoning setbacks while adding the rooms families need.
Project Management How Hamilton Exteriors
How Hamilton Exteriors
Manages Your Home Addition
Existing-Home Assessment
We review the foundation, framing, roof, utilities, drainage, access, and likely connection points before the addition design advances.
Design and Permit Coordination
Our team coordinates the layout, architecture, structural engineering, energy documents, permits, comments, revisions, and approved plans.
Addition Construction
We manage site protection, structural connections, foundation, framing, weatherproofing, building systems, finishes, inspections, and documented changes.
Integration and Closeout
We check connections between new and existing work, complete final inspections and the punch list, and review applicable warranty terms.
Google rating 4.6 ★ from 47 public reviews
Homeowner Reviews of Our Construction Work
Public feedback from remodeling and related construction projects.
K
Kevin L
via Google
We hired them for a bigger renovation. Alex was very responsive, which I appreciated. We changed a couple requirements during the job and they worked with us on it without making it complicated. Overall, everything went pretty smooth and their quality of work is solid. I recommend them highly!
J
Jacob Rothwell
via Google
Alex Li helped me with my basement remodeling, they were super efficient, and the work came out better than I could’ve ever imagined! Thank me later!
M
Maan D
via Google
Had Hamilton Exteriors do a full kitchen renovation. Natasha helped a lot with scheduling and coordination which made things easier on our end. We got regular updates and didn’t feel left in the dark at any point. The team paid attention to details and made sure everything was installed properly. the whole process felt pretty smooth and the kitchen came out really clean. happy with the final result
L
Lekan Ajayi
via Google
This service was good and very efficient, all remodeling was done to liking. Jacob was a great worker and helped with answering questions that was needed. Would recommend to others.
Google rating: 4.6/5 from 47 public reviews
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Home Additions Costs in Burlingame
$300,000–$600,000
Median home value in Burlingame: $2,400,000
Prices reflect Burlingame's premium market and San Mateo County labor rates. Actual costs depend on home size, materials, and project complexity. We provide free, itemized estimates with no hidden fees.
Get Your EstimateCompare Broad Home Expansion Paths
Swipe to compare all options.
| Feature | Second Story | Room Extension | Guest House | Whole-House Remodel |
|---|---|---|---|---|
| Relationship to home | New level above | Attached ground-floor space | Detached structure | Existing home transformed |
| Main structural focus | Foundation capacity, framing, and roof | New foundation and connection | New foundation and separate structure | Existing framing and building systems |
| Site impact | Keeps most yard area | Uses ground-floor footprint | Uses a separate site area | Usually stays within the home footprint |
| Early planning focus | Stairs, structure, roof, and occupancy | Layout, setback, roof, and drainage | Access, utilities, setbacks, and use | Phasing, systems, structure, and relocation |
| Dedicated guide | Second story | Room extension | Guest house | Whole-house remodel |
Addition Financing
Plan Your Home Addition With Approved Credit
Financing may be available for eligible room extensions, second-story additions, and larger remodeling projects with approved credit. During planning, we review the scope and explain current lender programs, terms, amounts, and payment timing.
Ask which current options fit your home addition project.
Call Now (650) 977-3351 Frequently Asked Questions
Didn't find the answer to your question? Call Now (650) 977-3351
What areas do you serve?
We serve Northern California across three regions: the San Francisco Bay Area, Greater Sacramento, and the Central Valley. Our published guides cover 14 counties and 88 cities. Our Castro Valley and Sacramento offices support local estimating, permit coordination, and project planning across these regions.
How does billing and financing work?
Financing may be available for eligible projects with approved credit. Available terms depend on lender approval, project scope, and current programs. Your project manager can review the options that apply before work begins. We also accept checks, ACH, and major credit cards.
Are you licensed and insured?
Yes. Hamilton Exteriors holds CSLB License #1078806, active general liability coverage, and the required contractor bond. We also hold GAF Master Elite and James Hardie Elite Preferred credentials. We can provide current proof of coverage before work begins.
Do I need a permit for my exterior project?
Permit requirements depend on the project scope and local jurisdiction. Hamilton Exteriors coordinates required applications, plan documents, corrections, and inspections. Permit fees and allowances appear in the proposal before construction begins.
How much does a home addition cost in Burlingame?
Home additions in Burlingame typically cost $200-$500 per square foot depending on scope and finishes. A second story addition usually runs $250,000-$500,000. With median home prices at $2,400,000 in Burlingame, adding space is often more economical than moving. Free consultations available.
Can I add a second story to my home in Burlingame?
Most single-story homes in Burlingame can support a second story addition with proper structural engineering. We evaluate your foundation, framing, and local zoning during our free consultation. Many homes in Burlingame Village have successfully added second stories.
How long does a home addition take in Burlingame?
Most home additions in Burlingame take 3-6 months from permit to completion. Second story additions are typically 4-6 months. We handle all San Mateo County permits and manage construction so you have one point of contact.
Does Hamilton Exteriors handle permits for additions in Burlingame?
Yes. We handle all permitting for home additions in Burlingame and San Mateo County — architectural plans, structural engineering, and city submissions. We work with Burlingame planning departments regularly.
Can I live in my home during the addition in Burlingame?
In most cases, yes. We phase construction to minimize disruption. For second story additions, there may be a brief period where certain rooms are inaccessible. We create a detailed plan before starting so you know exactly what to expect.
Your Next Step
Plan Your Project With a Clear Scope
Financing may be available with approved credit for eligible projects.
Tell us about your project. We usually call within 3–5 minutes to schedule the next step.
21634 Redwood Rd Unit F, Castro Valley, CA 94546
Serving 88 cities across the Bay Area, Greater Sacramento, and Central Valley. Explore all service areas →