Services

Ten practice areas, sharpened by Southern California.

The work HJH does day to day falls into two groups. Project Types are the buildings we design — residential through mixed-use. Specialty services are the studies, evaluations, and retrofits that the LA market demands of every engineer practicing here.

A / Project Types

What we design from the ground up — or back to it.

Ground-up new construction, tenant improvements inside existing shells, and additions or remodels to existing homes. Every engagement is led directly by the principal.

Custom Residential

Structural engineering for one-of-a-kind houses: hillside cantilevers, open plans, ADUs, and additions.

Commercial

Ground-up and adaptive commercial structures — office, retail, restaurant, and light industrial.

Tenant Improvement

Reworking existing structural shells to host new programs without disturbing the things you can't move.

Mixed-Use

Retail-over-residential buildings where the structural grid has to serve two different programs at once.

Multi-Family

Apartment, condo, and small-lot subdivision structures — wood-frame podium to fully engineered CMU.

B / Specialty

Studies, evaluations, and retrofit work.

The work that happens before design begins — and the work that happens on buildings that already exist. Especially important in LA, where code and ordinance shape every older structure.

Due Diligence Studies

Pre-acquisition structural reviews that surface what a property will actually take to develop.

Seismic Retrofit

Strengthening existing buildings — unreinforced masonry, non-ductile concrete, and older wood frame.

Feasibility Studies

Fast, numbers-backed studies that confirm whether a structural idea pencils before design begins.

Seismic Evaluation

ASCE 41-based evaluations of existing buildings — Tier 1 through Tier 3, with a clear deficiency list.

Soft-Story Retrofit

Complete retrofit service under LA's Mandatory Soft-Story Program — screening through final sign-off.