Home Addition Contractor in Pasadena - Design, Permits and Build Under One Contract

Fast, Reliable Home Addition Contractor Across Pasadena

A home addition in Pasadena typically costs between $180 and $420 per square foot, with a 400-square-foot bedroom addition landing around $72,000 to $168,000 depending on foundation work, historic-district review, and finish level. Most Pasadena projects take 4 to 8 months from first design meeting to final inspection, and the biggest variable we see is not the framing or drywall – it’s whether the Historic Preservation Commission gets involved. If you’re on a 50×150 lot in Bungalow Heaven or anywhere near a contributing Craftsman, the design review adds time and detail work that a Glendale crew rarely touches. That’s the work we do every week. Call (254) 602-5618 to get a written price on your addition before any work starts.

Call (254) 602-5618

We’re the Home Addition Contractor team at Lodgewick ADU Builders, the ADU and additions company of the Kingswell family. We work in Pasadena from the brand’s Los Angeles office, with crews who know the city’s historic districts, its deep lots, and its summer heat. A lodge is a small house on a larger property, and an addition – whether it’s a bedroom, a sunroom, or a second story – is exactly that: more house on the lot you already own. We put our commitments in writing, from the first price to the final guarantee.

Why Lodgewick ADU Builders Is Pasadena’s Preferred Home Addition Contractor Company

Homeowners in Pasadena call us after they’ve already been burned once – a contractor who quoted one number over the phone and a different number at the front door, or a crew that never came back to fix the cracked drywall. Our response is The Kingswell Guarantee, and it’s printed on every project we do in Pasadena: a written price before any work begins, a defined arrival window on the schedule, a clean job site at the end of every day, and a written guarantee on the finished addition. If the work isn’t right within 365 days, we come back and make it right, free of charge. That promise is named in the contract, not implied in a handshake.

Russ Delmar leads our Pasadena projects. Russ has walked hundreds of lots from North Marengo to Linda Vista and knows what the Historic Preservation Commission will flag before a single drawing gets submitted. Customers around Pasadena tell us the same thing: the written price was the deciding factor. No change orders at the door, no surprise line items. The price we hand you is the price you pay, and the guarantee is in your hand before we pick up a hammer.

Every call is answered by a live person, 24 hours a day, 7 days a week. No voicemail loops, no chatbot. When you have a question about your Pasadena addition at 9 p.m. on a Tuesday, a real human picks up. That’s how we’ve built our reputation in this city since establishing in 2010 under the Kingswell family of home-service companies.

Bedroom Addition Contractor in Pasadena

Bedroom Addition Contractor work in Pasadena means something different than it does in most of LA County, because a large share of our bedroom additions happen on 1910s to 1930s Craftsman bungalows and Spanish Colonial Revival homes where every alteration triggers historic review. A ground-floor bedroom bump-out on a North Marengo lot often requires matching window proportions and roofline pitch to the contributing house, and that detail work shows up in the design phase before framing ever starts. A typical Pasadena bedroom addition of 300 to 500 square feet runs $54,000 to $210,000, with the upper end reflecting foundation upgrades, seismic bracing, and historic-district compliance.

Historic District Bedroom Additions

In Bungalow Heaven, the city’s design guidelines require exposed rafter tails, cladding, and window dimensions to match the primary Craftsman. Our team specifies materials like James Hardie cladding to match the contributing structure’s profile, and our plans go in with the compatibility analysis already done – which saves you the redesign round that catches other contractors off guard.

Bedroom Additions on Deeper Pasadena Lots

Pasadena’s 50×150-foot lots give us room to work, but many of these older homes still carry knob-and-tube wiring, cast-iron drain lines, and mudsill foundations that must be corrected before the Certificate of Occupancy will issue. We identify those conditions during the estimate, not after the room is framed, so the written price you sign accounts for them from day one.

Sunroom Addition in Pasadena

Sunroom Addition projects in Pasadena face a specific climate problem: the city’s position at the base of the San Gabriel Mountains produces some of the hottest summer temperatures in the LA basin, regularly above 105°F during heat events. A sunroom that would be comfortable in Santa Monica becomes an oven here if the glazing, insulation, and HVAC are sized to a coastal default. A three-season sunroom in Pasadena runs $45,000 to $120,000 for 200 to 350 square feet, and a four-season version with dedicated HVAC typically lands between $90,000 and $190,000. The cost difference is mostly in the glazing and the mechanicals, and cutting that corner in this city means a room you can’t use five months out of the year.

High-Heat Sunroom Design

The materials we specify for a Pasadena sunroom are different from the coastal spec. We size the cooling for 105°F+ afternoons, use low-emissivity glazing that blocks solar gain without darkening the room, and ventilate the roof assembly so heat doesn’t accumulate above the ceiling. Homeowners who’ve had a sunroom built elsewhere and suffered through a Pasadena July tell us they wish someone had explained this before they signed.

Sunrooms on North Foothill Parcels

If your lot sits in the northern foothills, inside a Very High Fire Hazard Severity Zone, the sunroom also has to meet Chapter 7A of the California Building Code: ember-resistant vents, ignition-resistant roofing, and proper clearances. We pull those requirements into the written quote so there’s no surprise line item after the permit comes back.

Trusted Brands We Service in Pasadena

We work with established ADU and addition brands including Cover, Dvele, and Mighty Buildings, matching each manufacturer to the homeowner’s lot, budget, and timeline rather than pushing a single system onto every project. For Pasadena customers, that matters because a prefab panel system that speeds up a flat-lot build in the flats may not be the right call on a hillside parcel with fire-zone requirements. We keep local parts sourcing in place for common repair and modification work on these systems, so a Pasadena homeowner isn’t waiting on a shipment from out of state to fix an issue. The brand we recommend depends on your specific lot and goals, and the written quote names the system we’ll use – no substitutions after the contract is signed.

Common Home Addition Contractor Problems We See in Pasadena Homes

• Designing to state ADU streamlining rules and getting bounced by the Historic Preservation Commission. The state’s ADU law does not fully preempt Pasadena’s design review, so a roofline pitch or window proportion that doesn’t match the contributing Craftsman sends the permit back for redesign. We’ve seen this add two months to a project that was otherwise ready to build.
• Framing new square footage without correcting knob-and-tube wiring or cast-iron drains. A 1920s bungalow on a 50×150 lot can look fine until you open the walls, and the Certificate of Occupancy will not issue until the electrical and drains are brought up to code. The written price we provide accounts for those corrections from the start, because we know which Pasadena homes carry them.
• Coastal-default HVAC sizing in Pasadena’s summer heat. An addition designed to a westside climate spec will bake through August, and homeowners end up retrofit-purchasing a second cooling system a year later. We size for 105°F+ heat events because that’s what the city actually gets.
• Missing Chapter 7A fire requirements on northern foothill parcels. Ember-resistant vents and ignition-resistant roofing aren’t optional up there, and a contractor who doesn’t build in that zone will get flagged at inspection. We pull the fire-zone requirements into the quote before you sign anything.

Pricing for Home Addition Contractor in Pasadena, CA

We Also Serve Cities Near Pasadena

Our team serves homeowners across San Marino, South Pasadena, Altadena, and San Gabriel, bringing the same written-price commitment and 365-Day Done Right Promise to every job. If you’re outside Pasadena proper but still in the San Gabriel Valley, we can help. Learn more about our Home Addition Contractor in Pasadena coverage area or call (254) 602-5618 to confirm your address.

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