







A free site visit, a check of what your lot allows and a written, line-item price.
Get your free estimateFast, Reliable Home Addition Contractor Across Lemon Grove
Home additions in Lemon Grove typically run $180 to $420 per square foot depending on scope, with a full second-story addition on a 1950s ranch usually landing between $165,000 and $340,000 once permits, structural upgrades, and finishes are in. We’re Lodgewick ADU San Diego, and we’ve worked on enough Lemon Grove homes off Broadway, Encanto, and North Avenue to know exactly what opening up a pre-1970s wall turns up. A live person answers at (619) 376-2760 day or night. The estimate is free, and every price we quote goes in writing before a single wall comes down.

Most Lemon Grove additions don’t fail because the workmanship is bad. They fail because someone quoted the job without accounting for what’s actually inside a 1950s ranch: a 100-amp panel still sharing a meter, undersized headers that won’t pass lateral-load calcs, and rear yard depths that shrank after the 2021 zoning updates. We plan for those before demo starts. That’s the difference between an addition that finishes on budget and one that stalls at inspection.
Why Lodgewick ADU San Diego Is Lemon Grove’s Preferred Home Addition Contractor Company

Lemon Grove homeowners call us because we put numbers in writing before the work starts, and because our crews show up in the window we gave them. We’re the Home Addition Contractor team of the Kingswell family, established in 2010, and every project in Lemon Grove operates under The Kingswell Guarantee. That means a written price first, a defined arrival window, a clean job site, and a written guarantee on every build. If the work isn’t right within 365 days, we come back and make it right. That’s in writing, not in a sales pitch.
Our background-checked, uniformed technicians work throughout Lemon Grove, from The Triangle up to neighborhoods near Bancroft County Park. We answer the phone with a live person 24/7, so when you call at 7 a.m. to ask about a permit question on your North Euclid Avenue addition, you get a human, not a voicemail loop. Russ Delmar, who leads our Lemon Grove work, has walked more of these pre-1970s lots than most people who sell additions in this city. That local familiarity matters when a ten-foot rear yard difference decides whether your project needs a variance.
Second Story Addition Contractor in Lemon Grove
A second story addition contractor in Lemon Grove does more than frame upward. The job starts with an honest look at what the existing first floor can carry. Many 1950s-era ranch homes along Broadway and North Avenue still run their original 100-amp panels, and adding a second story pushes the electrical load past what the service can handle. We write the panel upgrade and subpanel into the contract as an allowance before demolition, so the inspection doesn’t halt halfway through. A full second-story addition here typically runs $165,000 to $340,000 depending on square footage, roofline changes, and whether the existing foundation needs reinforcement.
What separates a good second-story job in Lemon Grove from a bad one is what happens when the wall comes open. On a 1950s ranch in Encanto off Imperial Avenue, our crew found the original 100-amp panel still shared a meter with the main house, plus a sill plate that had rotted from decades of slow moisture. We priced the service upgrade and the sill replacement in writing before touching anything else. No change order without written approval. That’s how every job goes.
Foundation and Framing Checks First
Before we quote a second-story addition, we look at the slab or raised foundation, the existing headers, and the stud spacing. 1950s framing often fails current lateral-load calculations once you add a floor above it, which means the price has to include engineered fixes, not hope.
Electrical Service and Roof Ties
Adding a second floor means the roofline changes, and so does the electrical picture. We plan the panel upgrade, the subpanel location, and the tie-in detail before the first permit application goes in.
Garage Addition Contractors in Lemon Grove
Garage addition contractors in Lemon Grove work with a housing stock that was built around the detached garage. Many of the 1950s and 1960s ranch homes near Sonka Urban Heights and off East Plaza Boulevard have detached garages set far enough back that a garage-to-ADU conversion looks straightforward on paper. The 2021 zoning updates tell a different story. Detached ADU setbacks tightened on the city’s pre-1970s lots, and a ten-foot difference in rear yard depth off a street like Broadway can flip a simple addition into a variance hearing. A garage conversion or bump-out addition here generally runs $90,000 to $210,000, with the site-specific setback review baked into the number before you sign.
We emphasize garage additions on this page because they’re the most common project Lemon Grove homeowners ask us about, and the one most likely to go sideways if the quote ignores the lot. A detached garage that looks like it sits twelve feet off the rear property line might only have eight feet of buildable area once the 2021 rules apply. We check that before we quote.

Setbacks and Utility Runs
Lemon Grove’s setback updates mean we pull the parcel data and physically measure the rear yard rather than trusting the county map. We also trace the existing utility run, because a detached garage conversion usually needs its own subpanel, and that subpanel needs a service that can carry it.
Converting Without Losing the Garage
Some homeowners want to keep garage parking and build above it. The question is whether the existing garage framing and footings can carry a second floor. On older Lemon Grove garages, the answer is often no without added work, so we price the reinforcement as a line item, not a surprise.
Trusted Brands We Service in Lemon Grove
We work with established ADU and addition materials that hold up in Lemon Grove’s inland climate. Boxabl and Plant Prefab give Lemon Grove homeowners faster panelized builds when a lot can’t support months of on-site framing. Tuff Shed structures work well for detached additions where a simpler, code-ready shell fits the budget. For siding and trim, we use James Hardie products because they handle the warmer inland summers and cooler winter nights here better than wood that expands and contracts with every season. We keep local parts access in San Diego County, so Lemon Grove jobs don’t wait on out-of-state shipments when a trim piece or panel needs replacing.
Common Home Addition Contractor Problems We See in Lemon Grove Homes
- Original 100-amp panels still shared with the main house. Homes along Broadway and North Avenue frequently run their entire electrical load through a panel that was sized for 1950s appliance demand. A second-story addition or garage conversion without a service upgrade fails inspection, and we write that upgrade into the contract before demo.
- Rear yard depths that look fine on paper but fail the 2021 setbacks. Encanto-area lots often show buildable depth on county maps that doesn’t match the post-2021 legal buildable area. If you quote without measuring, you’re quoting a project that can’t be permitted as drawn.
- Undersized framing on pre-1970s ranch homes. The headers and studs that passed code in 1958 don’t pass current lateral-load requirements once you open the wall for an addition. A fixed contract without allowances means the contractor either eats the difference or pads the price.
- Moisture intrusion where stucco meets old sill plates. Lemon Grove’s inland location means less coastal fog than a city like Chula Vista, but decades of occasional winter storms have still rotted sill plates on homes where original flashing failed. We inspect those areas before framing, not after.
Pricing for Home Addition Contractor in Lemon Grove, CA
A home addition in Lemon Grove runs from about $90,000 for a straightforward garage conversion to $340,000 or more for a full second-story addition with roofline changes and structural upgrades. What moves the number isn’t the square footage alone. It’s the panel upgrade, the engineered framing fixes, the setback review, and whether the original windows can stay or must be replaced to meet current energy code. We don’t quote a Lemon Grove addition without walking the lot, measuring the rear yard, and checking the panel. That’s why our written estimates hold. Call (619) 376-2760 and we’ll schedule a free estimate, with the numbers on paper before you spend anything.
We Also Serve Cities Near Lemon Grove
If you’re in La Mesa, Bonita, National City, or Chula Vista, we handle additions there too, with the same written-guarantee approach. But this page is for the city where we’ve spent the most time opening up old walls: Lemon Grove. The local advice above, about setbacks and legacy panels, is specific to this housing stock.
Serving Lemon Grove, CA - Our Local Coverage Area
We’re based in the Lemon Grove area and know this community well. Use the map below to see our service coverage - if you’re nearby, we can almost certainly help.
FAQs About Home Addition Contractor in Lemon Grove
Because pre-1970s Lemon Grove homes hide things behind plaster and stucco that no walkthrough can reveal: undersized headers, rotted sill plates, and electrical loads that don’t meet current code. Quotes change when contractors ignore those realities in the original number. We handle it differently: we write allowances and inspection-first pricing into the contract, then price any newly discovered work in writing before we touch it. Call (619) 376-2760 for an exact quote, and the number you sign is built around what we can actually see plus what the house’s age tells us to expect.
Most Broadway second-story additions on 1950s ranch homes need a panel upgrade, because the original 100-amp service was never sized for a second floor of living space plus modern HVAC and appliances. We confirm this with a load calculation before quoting, and the upgrade goes into the contract as a line item, not a mid-project surprise. Call (619) 376-2760 for a free estimate on your Broadway addition.
The 2021 zoning updates tightened detached ADU setbacks on Lemon Grove’s pre-1970s lots, which means an Encanto garage that sits ten feet off the rear property line may only have legal buildable depth for a smaller footprint than the county parcel map suggests. We measure the rear yard in person and confirm the legal buildable area before quoting. Estimates are free at (619) 376-2760.
Sometimes, but not always. If the original windows are single-pane and the addition expands the conditioned square footage, current energy code often requires replacement or an approved equivalent. We evaluate the existing windows and tell you straight whether they can stay before you commit. Call (619) 376-2760 for a free estimate on your North Highland Avenue addition.
If we find knob-and-tube wiring during a Monterey Heights addition, we stop work on that section, document what we found, and give you a written price to remove and replace it with modern wiring before any new framing covers it. We never bury active knob-and-tube behind new walls, and we never charge for that replacement without your written approval first. Call (619) 376-2760 to schedule your free estimate.
Written by Russ Delmar, Owner at Lodgewick ADU San Diego, serving Lemon Grove since 2010.









